Flat Bottom Angle Engraving Cutter With Conical Tip V Bit 4mm 6mm 3.175mm

Engraving fine lettering and shallow relief on acrylic, PVC, plastic plate, solid wood, white wood or copper? This flat bottom V bit does it with a 0.1–0.4 mm conical tip on a 3.175 mm (1/8"), 4 mm or 6 mm shank, in full angles of 10°, 20° and 30° and 22 size combinations from 30 mm to 80 mm long. The body is alloy and wear resistant, the edge can be re-sharpened when blunt, and custom sizes and angles are made to drawing. Price on request.

A shop that engraves lettering and shallow relief runs into the same three things: a plain V bit tapers to a knife point, so the bottom of the groove comes out thin and has to be cleaned up by hand; every change of line width asks for another cutter; and once the point dulls, the tool is finished. This flat bottom angle engraving cutter is the part that answers all three.

It is a flat bottom V-shape engraving bit with a conical tip. The flanks are cut to a full angle of 10°, 20° or 30°, the tip reads 0.1–0.4 mm, and the groove leaves a flat floor with a clean corner instead of a point that breaks off. Shank options are 3.175 mm (1/8"), 4 mm and 6 mm, over 22 size combinations.

Total length runs 30 mm on the 3.175 mm shank, 40–45 mm on 4 mm, and 45–80 mm on 6 mm. The body is alloy, and the cutter is specified wear resistant. It engraves acrylic, PVC, PVT, plastic plate, solid wood, white wood and copper — lettering, bas-relief and three-dimensional carving.

The cutting edge can be repeatedly trimmed and sharpened when blunt, so a dull bit is re-ground rather than scrapped. Operation is simple, and the shank runs on CNC routers, engraving machines and desktop mills. Price is on request.

What separates a fine engraving job from one that goes back for hand clean-up:

• Flat floor under a conical tip. Flanks at 10°, 20° or 30°, tip a 0.1–0.4 mm cone, so the groove bottom stays flat.
• 22 size combinations. 10 on the 3.175 mm shank, 6 on 4 mm, 6 on 6 mm, all off one size string.
• Three shanks, no adapter. 3.175 mm (1/8"), 4 mm and 6 mm go straight into the collet you already hold.
• Full angle 10° to 30°. 10° for hairline lettering, 30° for a wider groove, 20° in between.
• Tips of 0.1, 0.2, 0.3, 0.4 mm. Four tips are listed, so line width is picked before the job, not improvised.
• Lengths of 30 to 80 mm. 30 mm on 3.175 mm, 40–45 mm on 4 mm, 45–80 mm on 6 mm.
• Wear resistant alloy body. Alloy body, specified wear resistant, so the flank holds its form over repeated passes.
• Re-sharpen instead of replace. The blade can be repeatedly trimmed and sharpened when blunt, restoring the tip.
• Seven materials in the range. Acrylic, PVC, PVT, plastic plate, solid wood, white wood and copper.
• Lettering, relief and 3D carving. Copper lettering, bas-relief and three-dimensional carving are the three jobs this geometry is aimed at.
• Three machine types, one shank. CNC routers, engraving machines and desktop mills take the same plain shank.

The usual answer to fine engraving is one bit per line width, a job sent out, or hand clean-up after the machine. What this cutter changes:

• One bit covers three V angles. 10°, 20° and 30° are all in range, so a change of lettering width is a change of pocket, not a supplier.
• The floor comes out flat. A 0.1–0.4 mm cone tip on flat flanks leaves a flat groove floor — the difference between text that ships and text someone picks at.
• A dull edge is a re-grind. The blade can be repeatedly trimmed and sharpened, so one bit covers several throw-away points.
• Shank sizes you already hold. 3.175 mm (1/8"), 4 mm and 6 mm reach most CNC routers, engraving machines and desktop mills without a new collet.
• Reach without stacking extensions. Up to 80 mm on the 6 mm shank gets into deep relief work with fewer joints in the spindle.
• Wear resistance is in the spec. The alloy body is specified wear resistant, which matters on plastic plate and copper where chip runs past the flank.
• Fewer part numbers in the drawer. 22 combinations are ordered off one list, so the crib holds sizes rather than brands.
• Custom is a drawing, not a maybe. Sizes, angles and material grades outside 10°–30° and 0.1–0.4 mm are made to your drawing or sample.

Acrylic, PVC, PVT, plastic plate, solid wood, white wood and copper. Those seven materials are the listed range, and the jobs named are copper lettering, bas-relief and three-dimensional carving.

3.175 mm (1/8") if you hold a 1/8 inch collet, 4 mm or 6 mm if you hold the metric one — that choice decides the rest of the size string.

It gives the groove a flat floor instead of a knife point. The flanks are cut to a 10°, 20° or 30° full angle while the tip is a 0.1–0.4 mm cone, so fine lettering keeps a clean bottom instead of a thin ridge.

Down to a 0.1 mm tip, the finest in this range. The four tips listed are 0.1 mm, 0.2 mm, 0.3 mm and 0.4 mm, so width is chosen before the job starts.

30 mm on the 3.175 mm shank, 40 mm and 45 mm on the 4 mm shank, and 45, 50, 55, 60, 70 or 80 mm on the 6 mm shank.

Yes — repeatedly. The blade is made to be trimmed and sharpened when blunt, so the point is restored on the tool rather than thrown away with it.

Yes, on CNC routers, engraving machines and desktop mills. The shank is a plain 3.175 mm, 4 mm or 6 mm cylinder and operation is simple, so the only thing to match is the collet.

Yes. Custom production is done from your drawings or samples, and special sizes, angles and material grades outside the listed 10°–30° range are quoted on request.