The 0.4mm flat bottom engraving bit uses a 6 mm shank, 30° angle, 25 mm cutting height, and 50 mm overall length for precise CNC carving. CNCBit supplies this solid carbide engraving tool from Guangzhou, Guangdong for sign makers, woodworking factories, craft studios, and distributors that need clean grooves and repeatable detail.
0.4mm Flat Bottom Engraving Bit Specifications
- Shank: 6 mm for compatible CNC router collets.
- Angle: 30° for controlled V-carving and groove width.
- Flat tip: 0.4 mm for defined line bottoms and detailed lettering.
- Cutting height: 25 mm with a compact 50 mm overall length.
- Material: solid carbide for rigidity, wear resistance, and stable cutting.
Applications and Material Compatibility
This cutter supports small lettering, logos, signs, furniture decoration, molds, relief details, decorative lines, and prototype parts. Typical materials for testing include hardwood, MDF, plywood, acrylic, PVC, PE, nylon, cork, two-color engraving sheet, and aluminum composite panel. Final suitability depends on machine rigidity, spindle condition, clamping, chip evacuation, cutting parameters, and the required surface finish.
The 0.4 mm tip provides a practical balance between fine detail and edge strength. Because the 30-degree profile becomes wider as cutting depth increases, verify the programmed depth before production. Run a short sample path and measure the finished groove when dimensional accuracy matters. The compact 50 mm length can provide better rigidity than a long-reach cutter where additional clearance is unnecessary.
Recommended CNC Router Setup
Clean the 6 mm collet and tool shank, insert the cutter to a safe clamping depth, and minimize runout. Secure the workpiece on a flat spoilboard and begin with a shallow pass. Increase depth gradually while monitoring chip shape, sound, vibration, and edge quality. Avoid forcing the 0.4 mm tip through a full-depth path in one aggressive pass.
Wood and MDF require effective dust extraction. Acrylic should form clean chips instead of melted residue; if heat builds up, review feed rate, spindle speed, air flow, and cutter sharpness. For composite panels, confirm stable clamping and use appropriate cooling or lubrication where the machine process permits. Always follow the equipment manufacturer’s safety guidance and wear suitable eye, hearing, and respiratory protection.
Tool Selection and Related Engraving Bits
Choose the tip width, tool angle, and cutting length according to the smallest design detail and required depth. Browse our GA flat bottom engraving bits for other sizes and profiles. Readers who need general machine terminology can review this independent overview of numerical control.
Guangzhou CNC Engraving Tool Supplier
CNCBit supports customers in Guangzhou and across Guangdong, including Foshan, Dongguan, Shenzhen, and nearby manufacturing areas, as well as export buyers. Send the CNC machine model, collet size, workpiece material, required groove width, cutting depth, and quantity for a practical compatibility check. Local buyers can request specification confirmation, samples, and bulk-order information.
Frequently Asked Questions
What is the benefit of a 0.4 mm flat tip?
It creates a defined groove bottom while retaining enough tip strength for controlled detailed carving. Actual line width also depends on depth, runout, and machine accuracy.
Can this cutter process acrylic and hardwood?
It can process compatible materials after a test cut. Use shallow passes, secure workholding, effective chip removal, and settings that avoid heat or vibration.
Contact CNCBit for specifications, samples, or bulk pricing on the 0.4mm flat bottom engraving bit. The Guangzhou technical team can confirm whether this 6 mm shank, 30° cutter fits your CNC application.
