115×3.15x11x60x0.1 Flat Bottom Engraving Bit is a solid carbide precision cutter for PCB engraving, fine-line carving, lettering, isolation routing and detailed CNC marking. The long-reach geometry supports access to recessed areas, while the flat-bottom tip can create controlled-width lines when the spindle, runout, programmed depth and workholding are correctly set.
115×3.15x11x60x0.1 Flat Bottom Engraving Bit Applications
Typical uses include PCB copper isolation, circuit board prototyping, nameplates, small characters, decorative lines, plastic panels, resin boards, wood composites and other compatible engraving materials. Before production, make a test cut in scrap material because line width is affected by tip size, included angle, actual cutting depth, spindle runout and surface flatness.
The specification 115×3.15x11x60x0.1 should be confirmed against the product drawing and machine requirement. It identifies the ordered tool geometry, including the 115-degree profile and key dimensional values. Verify the shank, cutting section, overall length and 0.1 mm tip before clamping, especially when replacing a cutter already used in a calibrated PCB process.
Precision CNC Setup
- Clean the collet, holder and carbide shank before installation.
- Keep tool projection only as long as the job requires.
- Check spindle runout with a suitable indicator.
- Level the work surface or use height mapping for PCB engraving.
- Start with a shallow test pass and inspect the actual line width.
- Use dust extraction or air flow appropriate to the work material.
Small flat-bottom tips are sensitive to vibration and excessive plunge load. A rigid fixture, short effective overhang and stable spindle are essential. If the cut is wider on one side, check board flatness, tool runout and Z-axis calibration before changing speed or feed.
Cut Quality and Parameter Guidance
Use conservative depth for the first trial. Increase feed, spindle speed or engagement only after checking the groove, chip or dust formation and tool condition. For PCB isolation, the objective is to remove the required copper path without unnecessarily cutting deep into the substrate. For plastics and resin boards, control heat and clear debris so material does not adhere to the cutting edge.
Flat-bottom engraving geometry can provide a more consistent groove base than a sharp V tip for selected applications, but the final result depends on the programmed toolpath and actual tip condition. Inspect the cutter under magnification for chipping, wear or buildup. Replace it if damage changes the groove width, electrical isolation or surface finish.
Learn more about printed circuit board construction and why controlled copper removal matters in prototype routing. Always follow the machine manufacturer’s guarding, extraction and safe-operating requirements.
JEEFOO Supply from Guangzhou, China
JEEFOO manufactures and supplies carbide CNC engraving tools from Guangzhou, China, for distributors, workshops and industrial users. Dimensional inspection and cutting-edge checks support consistent repeat orders. Visit the JEEFOO CNC cutting tool website, or send the drawing, work material, machine, spindle, required line width and quantity for specification confirmation.
Inspection and Safe Operation
Never clamp on the cutting section. Stop the spindle completely before tool changes, wear suitable eye protection and keep guards and extraction in operation. A long, fine engraving bit can break if it is dropped, overextended or plunged too aggressively. Remove the tool after any collision and inspect it before reuse.
115×3.15x11x60x0.1 Flat Bottom Engraving Bit FAQ
What is this flat-bottom cutter used for?
It is used for fine PCB isolation, lettering, marking and detailed engraving where controlled line width and a flat groove base are required.
Why should I make a test cut?
Actual groove width depends on depth, tip condition, angle, spindle runout and surface flatness. A test cut confirms the result before production.
What information helps JEEFOO confirm an order?
Provide the full 115×3.15x11x60x0.1 specification, drawing, work material, machine type, spindle, required engraving depth, line width and quantity.
