The 3.175mm flat bottom engraving bit with a 30° angle and 0.1 mm tip is designed for precise lettering, line carving, relief details, and fine grooves on CNC routers. CNCBit supplies this solid carbide engraving tool from Guangzhou, Guangdong for woodworking shops, sign makers, craft studios, and distributors that need clean edges and repeatable detail.
3.175mm Flat Bottom Engraving Bit Overview
This V-shaped carbide cutter combines a 3.175 mm shank, 30-degree included angle, and 0.1 mm flat tip. The narrow flat bottom helps create controlled line width while the angled cutting edges remove material efficiently. It is suitable for compatible CNC routers and engraving machines used for 2D carving, 3D relief work, small text, decorative patterns, and precision marking.
Key Features and Cutting Benefits
- Solid carbide construction: provides rigidity, wear resistance, and a stable cutting edge for detailed engraving.
- 30° angle and 0.1 mm tip: supports fine lettering, narrow grooves, and accurate decorative lines.
- Efficient chip removal: helps reduce recutting when feed, speed, and dust extraction are correctly set.
- Broad material compatibility: suitable for hardwood, MDF, plywood, acrylic, PVC, PE, nylon, cork, and aluminum composite panels after testing.
- Repeatable CNC results: useful for signs, molds, craft products, furniture decoration, and prototype production.
Recommended CNC Setup
Confirm that the 3.175 mm shank matches the collet and keep tool runout as low as possible. Secure the workpiece on a flat spoilboard and choose a shallow initial depth of cut. Fine tips should not be forced into the material. Start with conservative feed and spindle settings, make a short test path, then adjust according to chip formation, surface finish, machine rigidity, and material hardness.
For wood and MDF, use effective dust extraction and check grain direction before detailed work. Acrylic should produce chips rather than melted material; if melting occurs, review feed, spindle speed, cutter sharpness, and air flow. Aluminum composite panels require stable clamping and suitable lubrication or cooling where the machine process permits. Always wear proper eye and respiratory protection.
Applications and Related CNC Tools
The cutter is commonly selected for small characters, logos, decorative borders, relief details, wood signs, acrylic panels, two-color engraving sheets, and craft components. For other angles, tip sizes, or cutting profiles, browse our GA flat bottom engraving bits. Matching the cutter geometry to the smallest design detail improves accuracy and reduces unnecessary machining time.
Guangzhou CNC Tool Supplier Support
CNCBit supports customers in Guangzhou and nearby Guangdong manufacturing areas such as Foshan, Dongguan, and Shenzhen, as well as international buyers. Local users searching for a Guangzhou CNC engraving bit supplier can provide the machine model, collet size, material, required line width, cutting depth, and order quantity for a practical selection check.
Frequently Asked Questions
What does the 0.1 mm specification mean?
It refers to the flat width at the cutter tip. Actual engraved width also depends on cutting depth, runout, machine accuracy, and the 30° tool angle.
Can this bit engrave acrylic and hardwood?
Yes, when the material is compatible and cutting parameters are tested. Use shallow passes and avoid excessive heat or side load on the fine tip.
Contact CNCBit for specifications, samples, or bulk pricing on the 3.175mm flat bottom engraving bit. The Guangzhou team can help confirm a suitable tool based on your CNC router and engraving application.
Tool Life and Quality Checks
Inspect the cutter under good light before every production run. Replace a tool that shows a chipped tip, excessive wear, or visible runout because a damaged edge can widen fine lines and leave a rough bottom surface. Record the successful spindle speed, feed rate, pass depth, and material for repeat orders. Operators who are new to machine terminology can review this independent overview of numerical control before setting a CNC workflow. Proper collet cleaning, shallow test cuts, and consistent workholding help the 3.175mm flat bottom engraving bit deliver reliable detail while protecting the 0.1 mm tip from unnecessary side load.
