CNC Router Bits TCT Three Edged Straight Cutter 1/2 Inch Shank 3 Flutes

Need a straight slot or a trimmed edge in MDF, laminated board or solid wood without changing the collet? This cutter covers it: 1/2 inch (12.7 mm) shank, 3 flutes, blade diameters of 5, 6, 8 and 10 mm, cutting length 20-35 mm. The edge is TCT — tungsten carbide tipped on a tungsten steel body, finish type unfinished. Listed for straight slotting, trimming, shaping and grooving on CNC machining centres, engraving machines and router systems. Reference CUT028; price on request.

A shop that cuts its own straight slots, trimmed edges and grooves runs into the same three things: chatter as soon as the shank leaves the collet, an edge that gives up in the middle of a batch, and no spare on the rack when it does. This cutter is built to answer all three.

It is a TCT three-edged straight cutter: 1/2 inch shank, 3 flutes, blade diameters of 5, 6, 8 and 10 mm, and a cutting length of 20-35 mm. Three cutting edges sit on one body, so a straight pass is carried by three lips instead of one or two, and the straight geometry keeps the wall of the slot parallel to the shank rather than leaving a profile behind it.

The cutting edge is TCT — tungsten carbide tipped; the details list the body material as tungsten steel and the finish type as unfinished. That edge matters on MDF, particleboard and laminated board, where the resin in the board is what dulls a cutter, not the wood fibre.

It is listed for straight slotting, trimming, shaping and grooving in solid wood (oak, beech, walnut, rubber wood), MDF, particleboard, laminated board, acrylic, PVC and other engineered materials, on CNC machining centres, engraving machines and router systems. Origin China. Price by request.

What each line of the specification decides at the machine:

• Three cutting edges — 3 flutes on one body, so a straight pass is shared by three lips instead of one or two.
• 1/2 inch shank — 1/2 inch (12.7 mm) diameter, the only shank size in the specification, so one collet covers all four blade diameters.
• Four blade diameters — 5, 6, 8 and 10 mm: one cutter family covering a 5 mm slot and a 10 mm groove.
• Cutting length 20-35 mm — 20-35 mm of edge under the shank, so depth per pass is bounded by the cutter.
• TCT cutting edge — tungsten carbide tipped, for MDF, particleboard and laminated board, where the glue line dulls an edge.
• Tungsten steel body — the specification names the body material as tungsten steel, separate from the tipped edge.
• Straight geometry — built for slotting, trimming, shaping and grooving: a wall parallel to the shank, no profile.
• Unfinished finish — finish type is listed as unfinished, so no coating layer sits over the carbide edge.
• Strength and hardness as listed — good strength, high hardness, sharp cutting and not easy to break, quoted from the specification.

The choice is usually between the cheapest cutter on the shelf and a special order quoted to your drawing. A 1/2 inch TCT straight cutter in four diameters is the third option.

• Three lips instead of one. 3 flutes share a straight pass, so at the same feed each lip takes a third of the chip load.
• One shank, four widths. 5, 6, 8 and 10 mm diameters sit on the same 1/2 inch shank: a job change is a cutter change, not a collet change.
• A depth budget you can plan. 20-35 mm of cutting length per cutter, so a deeper slot is quoted as two passes, not discovered at the spindle.
• The edge for abrasive board. TCT is the edge for resin-filled boards — MDF, particleboard, laminated board — where plain steel meets its limit first.
• Reorder by three numbers. Blade diameter 5/6/8/10 mm, cutting length 20-35 mm, shank 1/2 inch: a spare is ordered from the invoice line.
• No coating to lose. The finish type is unfinished, so what wears is the carbide edge, not a coating layer above it.
• Quoted, not shelved. Price is by request, so one order mixing the four diameters is quoted as one line against CUT028.

Only if the collet or chuck takes 1/2 inch (12.7 mm). Measure the collet bore, not the outside of the nut: every listed blade diameter — 5, 6, 8 and 10 mm — is offered on this one shank size.

One more cutting edge in the same straight body. 3 flutes mean three lips instead of two, with the chip room split across them, and the cutting length on this cutter runs 20-35 mm.

The 6 mm cutter, at the same 1/2 inch shank. The family is 5, 6, 8 and 10 mm, so the slot width is chosen by the blade diameter and never by the shank.

Up to the cutting length of that diameter: 20-35 mm of edge below the shank. Anything deeper than the cutter's cutting length is a second pass, not a deeper plunge.

Yes, and the edge is chosen for exactly that. TCT — tungsten carbide tipped on a tungsten steel body is listed for MDF, particleboard and laminated board as well as oak, beech, walnut and rubber wood.

TCT — tungsten carbide tipped. The product name says TCT three edged straight cutter, the cutting edge is tungsten carbide tipped, and the body material is listed as tungsten steel.

CNC machining centres, engraving machines and router systems, doing straight slotting, trimming, shaping and grooving. It is not a drill bit and the listing does not cover hand-held drilling.

CUT028 is the cutter, quoted on request rather than from a shelf price. Send the blade diameter (5, 6, 8 or 10 mm) and the quantity, and the price comes back as a quote against that reference.