LAMBOSS Two Flutes Router Bits 3x12 Woodworking Machine Cutting Tools

Need a 3 mm cutter that fits the 1/2 inch collet already on the spindle? This LAMBOSS two flute router bit is 3 mm in blade diameter and 12 mm in blade length on a 1/2 inch (12.7 mm) shank. Two flutes clear the chip, the cutting edges are precision-ground carbide, the shank is hardened steel, and the listed size range is 3-12 mm. Edge profiling and joinery in hardwood, softwood and engineered board. The SKU says it: 3 mm by 12 mm. Customisation supported; price on request.

A shop routing fine work runs into the same three things: a cutter that wanders in a narrow groove, swarf that packs the slot and scorches the edge, and a shank that does not match the collet already sitting on the spindle. This bit is built around those three.

It is a two flute router bit with a 3 mm blade diameter and a 12 mm blade length — the 3x12 the SKU is named after — mounted on a 1/2 inch (12.7 mm) shank. The listed size range for the line is 3-12 mm, and the application is wood cutting tools for woodworking machine tools.

Two flutes do the chip work: on a 3 mm diameter each cutting edge has a gullet behind it, which is where the listing's cleaner cuts and smoother finishes come from. The cutting edges are precision-ground carbide; the shank is hardened steel, listed as a separate part from the edge.

The shank is machined to seat snugly in the collet, which is how the listing describes vibration-free running. Hardwoods, softwoods and engineered materials are all named for this bit, from edge profiling to joinery. Customisation is supported and the price is on request.

What the label on this bit decides at the spindle:

• Two flutes, 3 mm across — two cutting edges on a 3 mm blade diameter leave a gullet behind each edge for the chip to travel in.
• 12 mm of cutting length — the second number in 3x12: 12 mm of edge below the shank, the depth one pass reaches.
• 1/2 inch shank — 12.7 mm, the size that seats in the collet already holding your other 1/2 inch tooling.
• Carbide edge, steel shank — precision-ground carbide at the cut and hardened steel at the grip, listed as two separate items.
• Flute geometry aimed at heat — the listing states the flute geometry is optimised to cut heat build-up and friction.
• Hardwood, softwood, engineered board — three material families named for this bit, so a change of stock is not a change of tool.
• Profiling and joinery — edge profiling and joinery are both named in the listing, run from a 3 mm cutter.
• Seats without vibration — shanks are machined to fit snugly, the listing's own description of vibration-free operation.
• Listed range 3-12 mm — this SKU is the 3 mm x 12 mm piece on a 1/2 inch shank, inside a 3-12 mm range.

The usual choice on fine routing is a bit that fits the collet you own, or one that forces a new adaptor. This is a listed size on the shank you already run.

• One collet, no adaptor. A 12.7 mm shank means the 1/2 inch collet stays on the spindle and a 3 mm cut still goes into it.
• Fine detail at 3 mm. A 3 mm blade diameter leaves a narrow groove, so inlay, hinge recess and thin joinery do not need a second machine.
• Chip out, not burnt in. Two flutes give the swarf a path, and the listing ties that geometry to less heat and friction in the cut.
• Carbide at the edge, steel at the clamp. The edge is ground carbide and the shank is hardened steel.
• Reorder by the number. 3x12 is 3 mm by 12 mm on a 1/2 inch shank, so a repeat order does not depend on a photograph.
• Sizes off the list are quoted. Customisation is supported, so a diameter or length outside the listed 3-12 mm range comes back as a price rather than a no.
• 12 mm per pass. 12 mm of cutting length sets the depth of one pass on a 1/2 inch spindle.

Blade diameter and blade length, in millimetres. 3x12 is a 3 mm blade diameter with 12 mm of cutting length, and both sit on a 1/2 inch (12.7 mm) shank.

Only if the collet takes 1/2 inch (12.7 mm). Measure the collet bore rather than the holder body: every listing detail for this bit gives one shank size, 12.7 mm, and no smaller version is listed.

Two flute. The product name, the parameter block and the 3x12 size all sit under two flutes, and the listing describes two cutting edges clearing the chip.

Hardwood, softwood and engineered materials. Those three are the material families the listing names, and edge profiling and joinery are the two work types it names for them.

Carbide at the edge, steel at the shank. The listing gives precision-ground carbide for the cutting edge and hardened steel for the shank, as two separate items.

No speed figure is printed for the 3 mm size; the published table covers other diameters, so treat the lowest published pair as the starting band and set the first cut on your own machine. That pair is 18,000 r/min with 8-10 m/min feed.

Yes. Customisation is supported, so a diameter or a cutting length outside the listed 3-12 mm range is quoted on request — give the size, the shank and the quantity.

Price is on request; the listing carries no per-piece figure. Quote the SKU 3x12 and the shank 1/2 inch (12.7 mm) when you ask, so the reorder comes back as the same 3 mm x 12 mm piece.