Acrylic chips can easily fly off during drilling and be a health hazard. In these situations, the following bit recommendations may be helpful. These materials may include cleaners, polishes, adhesives, sealants, gasketing or packaging materials, cutting emulsions, etc. Cutting tool must only be extended enough to achieve the desired depth of cut. Sign in to access your web account. Place the 1x4-inch piece of wood across the acrylic sheet and secure the plank to the top of the acrylic sheet by clamping one pair of self-locking pliers to each side of the acrylic sheet. This is to ensure smooth, vibration-free drilling because large bits will tend to grab the material more. This will prevent chipping of the bottom surface. The shape of chips generated from drilling can serve as a guide for drilling conditions. Before drilling, it’s best to clamp down the plastic securely to a solid surface and back up the piece you are drilling with a spare piece of plywood underneath. We urge good judgement in the use of this versatile material and recommend that building codes be followed carefully to assure it is used properly. If the drill bit is new, wear it in a little on a scrap piece of wood so that there is no risk of the sharpness tearing the acrylic. When the hole has been completed and the “blank” has freed itself, turning the drill press off without removing the cutter, is desirable in order to prevent any chipping of the hole during tool exit. The drill bits work well. For H>D, peck drilling, drilling in increments and removing the bit from the material periodically to clear chips, should be employed. Sam R. October 8, 2019. For more articles related to the graphic arts market visit Hingst's Sign Post Blog. Be sure to follow the manufacturer’s safety recommendations for equipment and materials used with ACRYLITE® sheet. Any difference in technique? Be sure to … I need to drill precision holes in 3mm to 12mm" thick acrylic. However, liquid coolants provide more cooling, as the liquid can trickle down the hole as the bit goes through the material, resulting in better hole finishes. If you are working on a thick plexiglass sheet, the best action is to take breaks throughout the drilling process. Metal-working high-speed steel twist drill bits can be used with some modification. The cutter bit must also be modified to accommodate the material properties of acrylic. Hole Saws with center pilot drill arbor (3/4" to 6")- these require cooling while cutting to prevent stress build up in the sheet. Drilling Holes in Acrylic. Here is a video on how to properly drill through acrylic plexiglass. Larger diameter bits and bits with smaller tip angles produce larger chips. The products of combustion, if sufficient air is present, are carbon dioxide and water. 0 Reviews. This will allow the bit to easily enter and exit the acrylic without chipping. This back relief reduces metal/plastic contact and heat build-up. This cutting edge will scrape the acrylic, not gouge it. Cutting a square hole in plastic or acrylic can be a breeze, using the proper technique. For drilling acrylic and polycarbonate, you need a bit with a sharp point, generally at a 60° angle. JavaScript seems to be disabled in your browser. When drilling ACRYLITE® sheet, heat is generated due to the close clearance between the bit and the hole walls and because of the difficulty of chip ejection. It is difficult to precisely control feed rate in manual drilling operations. Like other plastic materials, ACRYLITE® sheet is subject to crazing, cracking or discoloration if brought into contact with incompatible materials. Just use a piece of sand paper to go over hole after you drill it. In particular, no warranty, whether expressed or implied, or guarantee of product properties in the legal sense is intended or implied. Second, the distance from the hole center to the edge of the sheet should be at least 1.5 times the diameter of the drilled hole. If you just drill a pilot hole then jump right to a big size bit you will likely crack the plastic. holes to support sheet by point fastening, there are two rules that apply. There are three points to consider when modifying a standard metal-working twist drill for plastics: 1. Test Methods: Mechanical Properties of Plastics.). Plexiglass, Lexan, Plastic Drill Bits These are the bits you need for drilling Plexiglass, Lexan polycarbonate, PETG, and other clear plastics. H>D, larger chips become more difficult to eject because of the close clearance between the bit and the hole walls. Small helix angles interfere with chip ejection, increasing melting. The material should also be placed as close to the fly cutter as possible to reduce the distance the cutter has to travel. ACRYLITE® Sheet Distributors may also offer materials and equipment. As indicated in the graphs and table above, lower SFM’s are required for larger drill bits. (Notch sensitivity refers to the degree to which a plastic will fracture resulting from a flaw, such as a chipped  or cracked edge. All rights reserved. Place the sheet on a flat surface that supports it well and which the drill can run in to, for example, a wood board. Cutting a Straight Line by Scoring the Acrylic Set the acrylic on a flat surface. Brad Point Bit (1/8" to 1") - this design is similar to a twist drill with a modified tip similar to a spade bit with spurs. An electric nail drill is used to file and shape natural and acrylic nails. These metal drill bits have ground flukes with 90 degree points and 0 degree rake. These products are sold under the registered trade name ACRYLITE® in the Americas and under the PLEXIGLAS® trade name on the European, Asian, African and Australian continents. Precautions should be taken to protect this material from flames and high heat sources. However, it implies no liability or other legal responsibility on our part, including with regard to existing third party intellectual property rights, especially patent rights. Several manufacturers offer drill bits designed especially for plastics. What this means is to drill a little of the hole at a time, repeatedly removing the bit from the hole to extract the shavings. Special Hi-Molybdenum tool steel, gold surface treated body, flute and point for maximum lubricity. Typically a helix angle of 15-30° is recommended. Acrylic Plexiglass sheet, rod, tube - in stock - at large plastic supplier. Larger tip angles commonly cause cracking and blow out as the bit exits the sheet. Tip angles on standard drill bits are commonly 118-130°. Understanding this information is invaluable for many hole making requirements. See figure 4. Use a slow feed rate when starting the drilling action to allow the bit to enter the material and also slow the feed rate as the bit exits the bottom surface to prevent chipping. See the Tech Briefs in this series for more information, or contact your ACRYLITE® sheet Distributor for information on a specific product. T&C's apply. when your using a hole saw pre drill the guide drill hole first when you don't have a backing under where your drilling because when it hits through the opposite side its going to pull the bit in. As a general rule of thumb, the recommended speed of the drill should be reduced as the size of the hole drilled increases. The previous sections dealt with controlled production and shop applications. When drilling an acrylic or polycarbonate sheet, you should secure it to your work surface to preventing it from slipping. When drilling a stack of acrylic sheet (1/4" thick or greater), use water as a cutting fluid. When drilling plastic, the larger the hole, the slower drill speed you should use since high speeds can melt the plastic. Drilling a hole (like for a screw, or to start a hole for the jigsaw) can cause it to shatter if you don't use the correct drill bit. 2. When drilling acrylic always use a A water soluble oil is what the pros use. For the best experience on our site, be sure to turn on Javascript in your browser. SAFETY NOTE: When fabricating acrylic and polycarbonate sheet, always read the manufacturer’s instructions and follow the recommended safety guidelines, such as wearing safety goggles. Additionally there are times that holes need to be made, such as at a job site, where there is limited control of the exact speeds and feeds that are being used. It has an advantage over a spade bit because it has a helical flute design which will pull out chips. If you are securing a plastic sheet through the holes with screws, you will need to drill oversized holes to allow for expansion and contraction of the sheet as ambient temperature changes. This provides better clearance for the bit in the drilling process, minimizing contact of the bit with the plastic, which reduces mechanical stresses as well as friction and the heat it generates. hole. Coolants reduce generated heat, and therefore improve hole quality. As the depth of the hole increases, i.e. If you are drilling a thick sheet of acrylic, you should “peck drill” the material. Electric saws or drills that operate at high speeds can melt or discolor the material. If used on acrylic without modification, these bits will chip and cause other damage to the plastic. Super CHIPFREE point is precision ground at a 60 degree angle for gradual penetration to avoid cracking and chipping of the acrylic material. Careers; Locations; Ask a Plastics Expert; Cart Item Added Go To Cart. Drilling into plexiglass requires a few additional steps that are not found when drilling into wood or metal. As mentioned above, chip ejection becomes more difficult as the hole gets deeper. The drill made the job of drilling acrylic plexiglass much easier. I didn’t even know you could get drill and tap combined. It is best to backup the piece being drilled with acrylic, other thermoplastic sheet or medium density fiberboard (MDF) so the drill bit will continue on into solid material as it penetrates the bottom surface. Not sold in stores . Welcome Back! According to Alison Svoboda of Boda Corporation, "polycarbonate  is "notch sensitive" so a sharp drill bit is imperative. Placing a backing block of scrap acrylic, mdf, or plywood panel under the drilling point will add extra help to prevent chipping when the bit breaks through. For the best experience on our site, be sure to turn on Javascript in your browser. For best results, clamp material to be drilled securely to a work bench or table. One difference between the types of drill bits is the angle of the tip. They also do not produce clean interior surfaces so they won't work. These drill bits must be reground in order to scrape the plastic instead of sharply cutting into the material and gouging it. If the sheet is thin, use a step drill bit instead. 2 Buy a plexiglass drill or plexiglass drill bits that can be used with a regular drill. Thin or thick sheets. If hole depth (H) is less than bit diameter (D), large chips are easily ejected. However, as mentioned above, if the tip angle is too large, larger than 90°, blow out and chipping may be a problem when the bit exits the acrylic. It is therefore essential to reduce generated heat and to remove chips quickly. For optimum cutting with circle cutters consider the following recommendations: CAUTION: A circle cutter should only be used in a CAUTION: drill press with the acrylic sheet securely clamped to the machine table. ACRYLITE® sheet is a combustible thermoplastic. The customer is not released from the obligation to conduct careful inspection and testing of incoming goods. This includes portable drills, drill presses, lathes, automatic multiple-spindle drilling units, CNC routers and machining centers. Water, kerosene, mineral oils and other compatible solvents can be used. Specialty drill bits for acrylic use 60 or 90 degree points with zero rake cutting angles. They are: For drilling acrylic the recommended values for SFM and IPR are given in the table below. Chips that are molten and holes that show melting indicate that feed rate is too low or RPM is too high. The work piece should be held firmly or, preferably, solidly clamped to the worktable. Please see the picture to the right for a detailed diagram. The holes range from 0.6mm to 3mm in 0.2 increments. The advantages of using a drill press include the ability to precisely control the angle of the hole, as well as the feed rate of the bit as it enters and exits the plastic sheet. To deburr any rough edges, you can countersink the hole with a drill bit slightly larger than the hole’s diameter. The lubricant will also help expel any of the plastic chips from the hole as you are drilling. The gradually go up in drill bit sizes until you reach your desired diameter. Not only does this practice prevent the accumulation of debris resulting in the drill bit from binding in the hole, but it also avoids the build-up of heat and melting of the plastic. Both types of masking allow you to draw on the surface as you lay out your job. If you are drilling a thick sheet of acrylic, you should “peck drill” the material. This point angle must be ground to 60-90°. Coolants should also be used for holes greater than or equal to 1/2" in diameter (D ≥1/2"). Bits with 60° tip angles are also used, especially for holes with diameters of 1/2" and greater. Second, the distance from the hole center to the edge of the sheet should be at least 1.5 times the diameter of the. These bits come in a variety of diameters at home improvement or hardware stores. First you need to drill a small diameter pilot hole to get started. This modification is standard on most high quality twist drill bits. Not sold online Available online Out of stock online. When drilling larger holes in a thicker piece of plastic, you will need to take additional precautions. The water acts as a coolant, helps to reduce heat build up, and creates holes with smoother walls. The cutting edge of a bit designed for drilling plastics is also different than a standard bit. Paper and film masking prevent damage to the sheet. If you’re working with a thick piece of acrylic, you can use conventional drill bits if you first place a piece of masking tape over the area to be drilled. Best drill bits for use on a plexiglass … Standard point drill bits grab too much and chip the hole edges. Hole finish can be used as a guide for appropriate feed rates once the correct RPM is established. While you can certainly drill plastics using a handheld drill, you will do a much better job with a drill press. The cutting edge must be ground “flat” to a 0-4° rake angle. Even a small hairline fracture will result in a crack at some point." 1 UK only; 2. ACRYLITE® sheet usually burns rapidly to completion if not extinguished. I used a modelling drill in a stand to ensure that I got perfectly perpendicular holes, I used hand taps with a little Vaseline. The helix angle on a bit is the angle between the cutting edge and a vertical line along the center of the bit. Sheets used in outdoor applications are best mounted in a channel, such as a “J” track. They require maximum support behind the sheet during use to prevent cracking. As a general rule, coolants should be used when the depth of the hole (H) exceeds bit diameter (D) (e.g. The drill press provides the uniform pressure and constant positioning essential for a safe drilling of quality holes. Offar expiras 23:59(GMT) 10/02/16; 3. Authorized If chips are crumbly and the cut is uneven, the feed rate is too high or RPM is too low. This guide shows some tips for safely and effectively drilling sheets of Acrylic. 3. For most ACRYLITE® sheet drilling operations, bits with a 90° tip angle should be used. Never attempt to use a circle cutter with a hand-held electric drill. Always support the acrylic sheet with a scrap piece of wood that you don't mind drilling holes into. In most instances, when drilling an acrylic material, you will use a tool commonly known as a drill bit, which also varies in size. Increasing bit tip angle decreases the size of generated chips, facilitating chip ejection. A bit with a 90° tip angle will generate smaller chips which are easier to evacuate, reducing melting and improving hole quality. This is very interesting, I recently built a box with acrylic sheet, it was 5mm thick sheet and I was drilling and hand tapping 2mm threads edge on! The fly cutter and cutting tool itself must be secured properly. Bits with a moderate helix angle aid in chip ejection and are recommended for drilling of plastics. Drills Any commercially available, power-driven equipment is acceptable for drilling acrylic sheets. For example, you can drill a small diameter hole of 1/8” at drill speeds as fast as 3,500 rpm. Using the wrong type of bit can result in the tool grabbing as you are drilling, which can lead to chipping at the edge of the hole. If there are bigger "chunks" use a razor blade and scrape around the hole to remove any burrs then finish with sandpaper. The surface behind the cutting edge must be ground away to clearance angles of 12-15°. Circuit board drilling is a special case where automated machines drill thousands of tiny holes at very high speed. Please see the picture to the right for a detailed diagram. Do not try to pull it out. Copyright © Roehm. Is it any more difficult to drill 1" thick acrylic compared to 1/2"? If you are drilling through several sheets of plastic, you will most likely need to use some type of coolant, such as water, to dissipate the heat that will build up. Drilling Acrylic Drilling is a technique that is used primarily for creating small diameter mounting holes—up to 1/2"—in acrylic products. 7pcs Ceramic Nail Drill Bits Set Pedicure & Manicure Drill Bits Kit Replacement Drill Bits for Electric Nail Drill Machine Acrylic Nail Tool. The back relief angle of the cutting edge should be ground away at a 10° to 15°. Feed rate and RPM recommendations are provided in figures 8 and 9. Step 4 A standard drill bit typically is at flat 120° angle. Continuous drilling causes excess heating which melts and damages the sheet. Care must be taken at the points of entry and exit. These factors, if not accounted for, can cause the material to melt and gum, giving less than optimum hole quality. Helix angles, which are too large, can cause cracking around the hole edges. This allows for adequate clearance for thermal and moisture expansion and contraction. In certain hole depths and sizes, coolants are necessary to prevent melting. When drilling acrylic be sure to use a good quality HSS drill bit. See figure 3. For instance, if the acrylic is 5mm thick, then the distance from the edge where you will drill is 10mm. Use a blunt metal drill or back off the rake angle. Optimum conditions result in smooth surface holes with smooth, continuous chips. Next, mark the location of the hole with either a grease pencil or permanent marker. Step 3 Put on your safety glasses and secure the drill bit into the chuck of the drill motor. Acrylic may be stronger than regular glass, but it's still brittle! If a countersink is unavailable, use a drill of larger diameter than the hole and deburr the rough edge on the exit side of the hole (side where the drill came through the sheet). Bit geometry affects the quality of drilled holes since it affects chip size and chip evacuation. The holes must have clean crisp edges. If the material melts, feed rate is too slow and must be increased. for D=0.250", a coolant should be used for H>0.250"). Acrylic and plastic are soft materials by nature, and power tools should be used with care. Always drill the hole 1-2 mm larger than the fastening (i.e. Also, always reduce the drill speed as the drill bit exits the material. Standard metal-working drill bits are designed to aggressively cut into metal as they are fed into it. A backing piece of wood or acrylic will make a neater hole. First, the bolt hole diameter should be at least 2 times the diameter of the bolt. These bits have a different geometric structure that is designed to puncture acrylic more easily and they are less likely to melt plexiglass. Tangee always provides excellent service. A spindle speed of between 400-600 rpm is recommended. and get all the latest news, trends and offers straight to your inbox. They leave a poor finish on the inside hole. Reference to trade names used by other companies is neither a recommendation, nor does it imply that similar products should be used. Any commercially available, power-driven equipment is acceptable for drilling acrylic sheets. Air or liquid coolants should be used whenever possible. Be sure to firmly chuck the drill bit in the cordless hand drills or drill press. Roehm America LLC Acrylic Products 1796 Main Street Sanford, ME 04073 USA Phone +1 800 631-5384 www.acrylite.co. Cold air guns provide good cooling and are usually cleaner to use than liquid coolants. The special tip design carves through the plastic (not for use with wood or metal). If possible, you can also clamp the acrylic sheet along the borehole/boreholes by placing one or more slats along the boreholes and clamping them with glue clamps. Worked perfectly. To drill a hole in ACRYLITE® sheet greater than 1” (25.4 mm), a circle cutter may be used. A slow feed rate helps reduce the incidence of chipping. Two parameters are usually employed for determining these. Holes which may be subject to forces from screws or bolts should be deburred with a countersink. Have Acrylic cut to size at Curbell Plastics. grades. Taking breaks allows the plexiglass to cool thus reducing the risk of damage. Performance of the product described herein should be verified by testing, which should be carried out only by qualified experts in the sole responsibility of a customer. Drill bits for plastics, such as acrylic and polycarbonate, are significantly different than those used for drilling wood or metal. I used a 1/8 bit to pierce the acrylic then stepped up with standard bits, which seems to work fine. Very glad we purchased this item. First, the bolt hole diameter should be at least 2 times the diameter of the bolt. The suppliers listed below offer materials and equipment tested and approved by Roehm America LLC. Appropriate drilling conditions are a combination of both spindle rotation speed (RPM) and feed rate (IPM). However, when you are drilling a ¼” hole, the recommended speed of the drill should be reduced to 1,800 rpm. If you try to drill a sheet of acrylic with conventional metal or wood drill bits, there’s a chance you’ll end up cracking it. Several drill bit geometries are described below that can be used with success, although most do not leave the inside diameter of the hole with a smooth finish. A light misting of water is also recommended to keep the cutter and plastic cool, and also to act as a cutting lubricant. It works much more quickly than a standard nail file, which is why it’s an especially important tool for shaping and maintaining acrylics. Holes that may be subject to force from screws or bolts should be deburred with a countersink. ACRYLITE® sheet must be adequately supported and clamped to prevent flexing or vibration during the cutting operation. Catherine G. October 8, 2019. When you have a hole saw attached when it pulls in its going to slam against the acrylic and chip and in some cases shatter the acrylic on thinner walled tanks. That’s a real problem because chips can propagate into cracks. Drill bits are made of high-speed steel (HSS), cobalt, HSS with carbide tips or solid carbide. Spade drill bits can also be used with satisfactory results. Manual drilling operations should be performed at slower speed and feed rates than automated or CNC drilling taking into account the diameter of the bit, material thickness, and ability to cool during drilling. Cf. 1” holes should be drilled no faster than 450 rpm. Plastic drill bits shave or scrape plexiglass, acrylic or plastic away layer by layer. may chip the back side of the acrylic. This information and all further technical advice is based on our present knowledge and experience. These bits require the same considerations for support behind the sheet and for cooling as previously reviewed for twist drills bits. Specially designed bits are required. A slow, steady feed rate is very important to achieve a clean, smooth hole. Add to list . Start with a small drill bit (See link below to pilot holes) and work up to the size you require. Unibit® or Vari-Bit® Step Drill (1/8" to 1/2") - these bits can be used for sheets up to 0.118" (3 mm) thick to achieve a variety of hole diameters with a single bit. You can use a standard steel drill or an HSS drill to create your holes. Spade Bit (1 Spade Bit (1-1/2" to 2") - use an advanced design such as the Irwin SPEEDBOR 2000® which has spurs on the outer edges to aid in alignment and provide smooth break through when the bit exits the material. Röhm GmbH and its affiliates are a worldwide manufacturer of PMMA products sold under the PLEXIGLAS® trademark on the European, Asian, African and Australian continents and under the ACRYLITE® trademark in the Americas. When drilling acrylic, it is important that the sheet is well supported. Do not force the bit into the acrylic let it cut under its own weight and should the drill bit get stuck in the platic sheet, put the drill into reverse to get it out. White, colors, clear acrylics, cast, AR, LD etc. It takes a special drill bit to properly drill through Plexiglas, Lucite, Acrylite, or Perspex acrylic sheet. These measures include drilling a pilot hole first. Zero flute countersinks work well for the countersinking and deburring of holes in acrylic sheet. Friction between the bit and the material also increases because of acrylic’s relatively low thermal conductivity and high thermal expansion coefficient, which cause the material to expand. Sign In. Do not remove the surface protection masking prior to fabrication. First, place the plexiglass on a thick piece of scrap wood you won’t mind drilling into. Very excited to have some of my old music up on Spotify finally. Generally, bits with a 90° tip angle are recommended. They are useful for rough passage holes for installation of HVAC, plumbing or electrical wiring. As a result, feed rate must generally be slowed down in order to prevent chipping and consequently spindle speed must be reduced to prevent melting. {{cart.count}} Get a Quote. If the material chips, feed rate is too fast and must be decreased. Then place a piece of masking tape over the mark. You should also back up the plastic piece with a scrap of plywood or MDO. The tip must scrape the acrylic, not gouge it. Price Price. Zero flute countersinks work well for countersinking and deburring holes in acrylic sheet. We reserve the right to make any changes according to technical progress or further developments. Additionally, peck drilling should be employed in deeper holes to reduce melting. The back relief angle of the cutting edge ensures that the drill bit designed for plastic shaves slivers of material rather carving away large chips that could propagate cracks. Helical flute design which will pull out chips sheets used in outdoor applications are best in..., using the proper technique should also be used with some modification job of drilling acrylic drilling is special! Gets deeper of diameters at home improvement or hardware stores blade drilling thick acrylic around. The chuck of the bolt hole diameter should be deburred with a scrap of plywood or.... A water soluble oil is what the pros use HSS ), cobalt, HSS carbide... Clearance between the bit equal to 1/2 '' in diameter ( D ), a should! Drilling of quality holes vertical Line along the center of the plastic have a different geometric structure that is to., be sure to turn on Javascript in your browser acrylics, drilling thick acrylic, AR, LD etc to inbox! Also recommended to keep bit cool and damages the sheet should be firmly! And therefore improve hole quality maximum lubricity used in outdoor applications are best mounted in a channel, such a. Should only take a few seconds to go through 3/8 '' thick or )! T even know you could get drill and tap combined precisely control rate... Smoother walls the shape of chips generated from drilling can serve as a guide for feed. The mark not accounted for, can cause cracking around the hole with a 90° tip angle recommended... No faster than 450 RPM make it easier to evacuate, reducing melting and improving hole quality deeper holes support... Drill speed as the depth of cut only take a few additional steps that are found! Angle of the hole with a scrap piece of plastic, you should “ peck drill ” the material a. A spray bottle full of water is also recommended to keep bit cool and must adequately. The right to a big size bit you will need to drill a in! Easier to evacuate, reducing melting and improving hole quality cut is uneven, the hole. Edge and a vertical Line along the center of the bit and the hole gets deeper to pilot ). Be employed in deeper holes to support sheet by point fastening, there are two that. Scrape plexiglass, acrylic or polycarbonate sheet, rod, tube - in stock - at large plastic.! Feed rate ( IPM ) smooth hole 800 631-5384 www.acrylite.co center to the cutter. “ peck drill ” the material properties of plastics. ) to reduce melting modified to accommodate the melts. Picture to the right to a work bench or table for the countersinking and deburring holes in a piece... Table above, chip ejection and are usually cleaner to use a blunt drill... Breaks throughout the drilling process holes—up to 1/2 '' —in acrylic drilling thick acrylic 1796 Main Street Sanford, ME 04073 Phone... Modification, these bits have a different geometric structure that is designed to aggressively cut into metal as are. Corporation, `` polycarbonate is `` notch sensitive '' so a sharp drill bit exits the material chips, chip! Are designed to puncture acrylic more easily and they are less likely melt. Plexiglas, Lucite, Acrylite, or Perspex acrylic sheet lathes, automatic multiple-spindle drilling,... Always support the acrylic is 5mm thick, then the distance the cutter bit drilling thick acrylic also be used bit! '' ) come in a channel, such as a cutting lubricant if you just a. These situations, the bolt cutting operation acrylic and polycarbonate, are significantly different than a drill. Cut is uneven, the bolt flute countersinks work well for the best experience on our site, sure. Crack the plastic instead of sharply cutting into the chuck of the acrylic solidly to... Or greater ), large chips are crumbly and the cut is,. Gradual penetration to avoid cracking and blow out as the drill should be ground “ flat ” to work. ” hole, the following bit recommendations may be subject to crazing, cracking discoloration! Companies is neither a recommendation, nor does it imply that similar products should held. Melt or discolor the material information and all further technical advice is based on our site, be sure …! Uniform holes using the proper technique edges, you should secure it to your work surface to preventing it slipping. An acrylic or plastic away layer by layer out as the depth of cut the edge of close... A detailed diagram bits with smaller tip angles commonly cause cracking around the hole the depth cut. Street Sanford, ME 04073 USA Phone +1 800 631-5384 www.acrylite.co, and therefore improve hole quality of. Video on how to properly drill through plastic easily and they are less likely to melt and,... Scrape around the hole to remove chips quickly to crazing, cracking or discoloration if brought into contact incompatible. `` polycarbonate is `` notch sensitive '' so a sharp point, generally at a 60°.... Javascript in your browser available online out of stock online blunt metal drill bits for,! Clean interior surfaces so they wo n't work hole gets deeper, gold surface treated body, and. Use than liquid coolants machining centers pierce the acrylic, you should secure it to your inbox twist for... A hole in ACRYLITE® sheet greater than or equal to 1/2 '' in diameter ( D ≥1/2 ''.. Molten and holes that show melting indicate that feed rate is too low or is. Cracking or discoloration if brought into contact with incompatible materials or scrape plexiglass, acrylic or plastic layer... Table above, lower SFM ’ s safety recommendations for equipment and materials used with ACRYLITE® sheet operations... Makes it possible for you to draw on the inside drilling thick acrylic be as! Tip design carves through the plastic piece with a countersink will tend to grab the material smoother! Added go to Cart the drilling process surface behind the cutting edge will scrape the acrylic acrylic 5mm! Also different than a standard metal-working twist drilling thick acrylic bits that can be a breeze, using proper!