Drill bits used for plastic are specifically designed to cut through plastic materials effectively. Plastic drill bits have characteristics that set them apart from regular drill bits used for metal or wood. The main difference lies in the cutting edges and the flutes.
The cutting edges of plastic drill bits are often sharper and more pronounced compared to those on regular bits. This helps to create clean and precise holes without causing the plastic to crack or chip. The sharp edges reduce the potential for any material buildup during the drilling process.
The flutes on plastic drill bits are also designed differently. These flutes, or spiral grooves, help to remove the plastic debris as you drill. They typically have a wider and more open design compared to regular drill bits, allowing for better flute clearances and efficient chip evacuation. This prevents the plastic material from clogging or melting due to friction.
Additionally, plastic drill bits usually have a special coating or treatment on their surface to reduce heat buildup during drilling. This helps to prevent the plastic from melting or warping as you work.
It's important to note that when drilling plastic, it is recommended to use slower drill speeds and steady, constant pressure to avoid overheating or damaging the material. Always select the correct size and type of plastic drill bit for the specific plastic material you are working with, as different plastics may require different cutting features.
Best Drill Bits of 2024
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Rating is 5 out of 5
Drill America - DWD29J-CO-PC 29 Piece M35 Cobalt Drill Bit Set in Round Case (1/16" - 1/2" X 64ths), DWDCO Series
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Set of 29 jobber length drill bits includes inch sizes 1/16" to 1/2" in 1/64" increments
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Cobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials
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Gold oxide finish lubricates the drill bit and provides wear resistance
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Self-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging
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Meets ANSI specifications
2
Rating is 4.9 out of 5
DEWALT Titanium Nitride Coated Drill Bit Set, Pilot Point, 21-Piece (DW1361)
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DEWALT drill bit set has connectable accessory storage system to optimize storage space
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Patented bit-bar design of the drill bits set allows easy removal of bits and customizable placement
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Clear lid of the Titanium Nitride Coated drill bit set allows you to easily see contents at glance
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Clip latch for secure closing
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Small Bulk Storage size fits inside the Small and Medium ToughCase plus (sold separately) - Ideal for organizing loose bits
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Includes: 1/16" x 2, 5/64" x 2, 3/32" x 2, 7/64" x 2, 1/8" x 2, 9/64" x 1, 5/32" x 1, 11/64" x 1, 3/16" x 1, 13/64" x 1, 7/32" x 1, 15/64" x 1, 1/4 x 1, 5/16" x 1, 3/8" x 1, 1/2" x 1
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Tapered web provides greater durability to reduce breaking.
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Drill Bit Set includes sizes from 1/16-inch to 1/2-inch in a plastic tough case.
3
Rating is 4.8 out of 5
TICONN 21 PCS Titanium Coated Drill Bit Set with Hex Shank, 135 Degree Tip High Speed Steel Drill Bits Kit with Storage Case for Steel, Aluminum, Copper, Soft Alloy Steel Size from 1/16" to 1/2"
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[PREMIUM QUALITY] TICONN drill bits are made from premium quality titanium coated high speed steel (HSS). These bits will stay sharper, last longer, and can drill at higher speeds than uncoated and oxide-coated drill bits. Double U shape flutes design clear chips effectively
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[WIDE APPLICATION] 135° point angle drill bits keep centered without a pilot hole. These jobber self-centering drill bits have the rigidity and length for most applications of corded or cordless hand drills and drill presses. Ideal for drilling mild steel, aluminum, copper, soft alloy steel, wood, and plastic
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[SIZE LIST] 16 different sizes including 1/8", 7/64", 3/32'', 5/64", and 1/16" two pieces for each size. And 9/64", 5/32", 11/64", 3/16", 13/64'', 7/32", 15/64", 1/4", 5/16'', 3/8'' and 1/2'', one piece for each size
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[EXTRA CENTER PUNCH] A rugged case keeps all drill bits well organized. Molded size on the case lid will help you to identify the bits you need with less effort. Included center punch will help you to mark and drill more precisely.
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[TICONN BRAND QUALITY COMMITMENT] We stand behind the quality of our products. If for any reason you are not satisfied with your purchase, please contact us. We provide 30-day money back and 12 months warranty. 100% Satisfaction Guarantee for risk-free shopping!
4
Rating is 4.7 out of 5
DEWALT Titanium Nitride Drill Bit Set, 21-Piece (DW1342)
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Speed Tip Reduces Walking
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Ideal for drilling in metal, wood, and plastics
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No spin shanks
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Includes tough case container to keep bits organized
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Titanium Nitride Coating for Longer Life
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Bit case may differ from what is shown
5
Rating is 4.6 out of 5
amoolo Hex Shank Drill Bit Set (13Pcs Set+3 Pcs Free), Premium 4341 HSS Titanium Impact Hex Drill Bits for Wood, Steel, Metal, Plastic, Quick Change Design (1/16-1/4)
6
Rating is 4.5 out of 5
TICONN 99PCS Titanium Coated Drill Bit Set, 135 Degree Tip HSS Bits Kit with Storage Case for Aluminum, Copper, Soft Alloy Steel, Wood, Plastic Size from 1/16" to 3/8"
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[PREMIUM QUALITY] TICONN drill bits are made from premium quality titanium coated high speed steel (HSS). These bits will stay sharper, last longer, and can drill at higher speeds than uncoated and oxide-coated drill bits. Double U shape flutes design clear chips effectively
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[WIDE APPLICATION] 135° point angle drill bits keep centered without a pilot hole. These jobber self-centering drill bits have the rigidity and length for most applications of corded or cordless hand drills and drill presses. Ideal for drilling mild steel, aluminum, copper, soft alloy steel, wood, and plastic
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[SIZE LIST] 14 different sizes including 16PCS 1/16", 16PCS 5/64", 15PCS 3/32", 10PCS 7/64", 10PCS 1/8", 8PCS 9/64", 8PCS 5/32", 3PCS 11/64", 3PCS 3/16", 2PCS 13/64", 2PCS 7/32", 2PCS 1/4", 2PCS 5/16", and 2PCS 3/8"
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[EXTRA CENTER PUNCH] A rugged case keeps all drill bits well organized. Molded size on the case lid will help you to identify the bits you need with less effort. Included center punch will help you to mark and drill more precisely.
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[TICONN BRAND QUALITY COMMITMENT] We stand behind the quality of our products. If for any reason you are not satisfied with your purchase, please contact us. We provide 30-day money back and lifetime warranty. 100% Satisfaction Guarantee for risk-free shopping!
7
Rating is 4.4 out of 5
COMOWARE Cobalt Drill Bit Set- 15Pcs M35 High Speed Steel Twist Jobber Length for Hardened Metal, Stainless Steel, Cast Iron and Wood Plastic with Indexed Storage Case, 1/16"-3/8"
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HIGH QUALITY MATERIAL: 5% Cobalt High Speed Steel M35 provide extended tool life compared to ordinary drill bits. Durable and strong
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TWIST DESIGN & PERFORMANCE: PRECISE 135°SPLIT POINT, gold oxide finish and round straight shanks. Prevent walking, clear chips and particles faster.Produced by precision fully ground which ensures chips move smoothly.
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PROFESSIONAL & WIDELY USE: M35 Cobalt HSS is more suitable for hardened material. Particularly successful in cutting through hard metals such as stainless steel, cast iron, high temperature alloy, titanium alloy, hard plastics and woods, and also can be used for softer materials.
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SIZE INCLUDED: 15pcs jobber length drill bit set with plastic storage case including sizes:1/16" 2pc,5/64" 1pc ,3/32" 2pc,7/64" 1pc,1/8" 2pc ,9/64" 1pc, 5/32" 1pc, 3/16" 1pc, 7/32" 1pc, 1/4" 1pc, 5/16" 1pc, 3/8" 1pc.
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100% SATISFACTION GUARANTEE: If you are not 100% satisfied with your purchase for any reason whatsoever simply please feel free to contact us.
What is the best drill bit angle for drilling plastic?
The best drill bit angle for drilling plastic is usually between 80 to 120 degrees. This angle allows for efficient cutting and reduces the chances of the plastic material melting or cracking during drilling. It is important to use a sharp, high-speed steel (HSS) or cobalt drill bit for drilling plastic to ensure clean and precise holes.
What is the maximum depth that can be drilled into plastic with standard drill bits?
The maximum depth that can be drilled into plastic with standard drill bits depends on several factors, including the type of plastic, the size and quality of the drill bit, and the drilling speed and pressure applied.
In general, plastic is a less dense and softer material compared to metals, making it easier to drill into. With a standard drill bit, typical depths that can be achieved when drilling into plastic range from around 1 to 2 inches (2.5 to 5 centimeters) or deeper.
However, it's essential to note that excessive heat can be generated during the drilling process, especially if the plastic is thick or if it has low melting points. To prevent melting or deformation, it's recommended to use a low drilling speed, exert gentle pressure, and periodically withdraw the drill bit to clear any chips or heat buildup.
If you require deeper holes or need to drill through thicker plastic, specialized drill bits such as those specifically designed for plastics or wood can be used, as they have features like sharper angles or specially-shaped flutes to better handle plastic materials. It's always advisable to refer to the manufacturer's instructions when drilling plastic or use a drill bit designed for plastic to achieve better results.
How to ensure clean and smooth drill holes in plastic?
To ensure clean and smooth drill holes in plastic, you can follow these steps:
- Choose the appropriate drill bit: Use a drill bit specifically designed for drilling into plastic, such as a Brad point bit or a twist drill bit with a sharp cutting edge. Avoid using dull or worn-out bits.
- Secure the plastic: Place the plastic piece on a sturdy work surface or clamp it securely to prevent it from moving while drilling.
- Mark the drilling spot: Use a pencil or marker to mark the exact spot where you want to drill the hole. You can also use a center punch to create a small indentation on the surface, which helps the drill bit to stay centered and prevents it from slipping.
- Start with a pilot hole: For larger-sized holes, start by drilling a small pilot hole with a smaller drill bit. This will guide the larger bit and prevent any potential cracking or damage to the plastic.
- Apply moderate pressure: While drilling, apply moderate and consistent pressure to the drill. Excessive force may cause the plastic to crack or chip, while too little pressure may result in a jagged or uneven hole.
- Use low drilling speed: Set your drill to a low speed setting, especially if you are drilling into thin or delicate plastic. High speeds can generate excessive heat, which may melt the plastic rather than creating a clean hole.
- Cool the drill bit: To reduce heat buildup and melting, you can periodically dip the drill bit into a cup of cold water or use a coolant spray specifically designed for drilling into plastic. This helps to keep the bit cool and prevents the plastic from melting around the hole.
- Remove burrs: After drilling, you may notice some burrs or rough edges around the hole. Use a deburring tool or a small file to gently remove any imperfections and smooth out the edges.
Remember to wear safety glasses when drilling to protect your eyes from any flying debris. It is also helpful to practice on a scrap piece of plastic before drilling into your final workpiece to ensure the desired outcome.
