CNC Cutting Milling Tools Bottom Cleaning Router Bits Tungsten Steel

Need to flatten a panel or clear the bottom of a groove on the router you already run? These CNC bottom cleaning router bits use a 12.7 mm (1/2") shank on all 23 sizes, so one collet covers the whole range. CED runs from 10.0 mm to 50.8 mm in imperial and metric steps, and CEM is listed per size from 9.8 mm to 20.0 mm. The tungsten steel alloy cutter planes and slots wood, plywood, MDF, acrylic, PVC and solid surface on CNC routers, edge-banding machines and engraving machines. Price is quoted per size.

A shop that flattens panels and clears groove bottoms hits the same three things: cutters in four different shank sizes, an edge that steps where two passes overlap, and a new order every time the job moves from a 10 mm groove to a 50 mm panel face. This range takes all three off the bench.

These are CNC bottom cleaning router bits, listed in the parts catalogue as CNC Alloy Clear Bottom Knife and made in tungsten steel alloy. The point of the range is the size ladder: 23 cutters, 10 imperial and 13 metric, all on the same 12.7 mm shank. CED goes from 10.0 mm up to 50.8 mm, so a narrow groove clean-out and a full sheet skim run on one collet and one tool-change routine.

Imperial models step from 1/2*1/2 to 1/2*2, which is 12.7 mm to 50.8 mm CED. Metric models step from 1/2*10*15 to 1/2*50*15, 10.0 mm to 50.0 mm CED. CEM is published for every size and spans 9.8-20.0 mm, so the second cutting dimension changes with the cutter.

The cutter is listed for cutting, milling and engraving wood materials: wood, plywood, MDF, plastics, acrylic, PVC and solid surface. The fit list names edge-banding, engraving, cutting and hanging machines, plus CNC routers and hand-held routers with a 1/2-inch collet. Price is quoted per size.

What the size list actually does for a workshop:

• One shank, 23 sizes — every cutter in the range is 12.7 mm (1/2"), so a single collet covers groove clearing and panel planing.
• 10.0-50.8 mm CED ladder — 10 imperial models from 1/2*1/2 to 1/2*2, 13 metric models from 1/2*10*15 to 1/2*50*15.
• CEM published per size — the second cutting dimension is listed for all 23 cutters and spans 9.8-20.0 mm, so you read the number instead of estimating it.
• Tungsten steel alloy body — catalogued as alloy / tungsten steel, built as a wear part for edge-banding and CNC machines.
• Cut, mill, engrave — one bit family is listed for all 3 jobs on wood materials, so the same cutter handles planing passes and slot bottoms.
• Sheet list — wood, plywood, MDF, plastics, acrylic, PVC and solid surface, 7 material groups in total.
• Machine fit — edge-banding, engraving, cutting and hanging machines, plus CNC routers and hand-held routers with a 1/2-inch collet.
• Imperial and metric on one line — a 1-1/4" cutter (31.75 mm CED) and a 32 mm cutter can be ordered together, both at 12.7 mm shank.
• Named by dimension — the model number is the size: 1/2*22*15 means 1/2" shank, 22.0 mm CED, 15.0 mm CEM.

If panel flattening currently goes out to a service, or you keep five shanks in a drawer, this is what changes.

• One collet, no adapters. Every size sits on a 12.7 mm shank, so the 1/2-inch collet already on the spindle takes the full 10.0-50.8 mm range.
• Match the cutter to the cut. A 10 mm groove and a 50 mm panel face are two lines in one size list, not two suppliers and two lead times.
• Fewer changeovers per job. Order the two or three sizes a job actually needs and the router keeps the same collet for the whole run.
• Dimensions on the order line. The model number carries shank, CED and CEM, so a reorder cannot land on the wrong cutter.
• Buy the size, not a set. 23 models are listed separately — you take 1/2*32*15 without paying for 22 sizes you never run.
• One cutter across sheet types. Wood, plywood, MDF, acrylic, PVC and solid surface are all on the applicable sheet list.
• Fits the floor you have. Edge-banding, engraving, cutting and hanging machines plus CNC routers and hand-held routers, with no machine-side change.
• Spare-part supply, not a special order. The bits are catalogued as woodworking machine spare parts, so a replacement goes on the same purchase line as the machine parts you already buy.

It planes surfaces and clears the bottom of a cut. The cutter is listed for cutting, milling and engraving wood materials, and its flat-bottom form takes the waste out of groove floors and flat faces on CNC routers and edge-banding machines.

You can order any of 23 sizes. The list holds 10 imperial models (1/2*1/2 to 1/2*2) and 13 metric models (1/2*10*15 to 1/2*50*15), with CED from 10.0 mm to 50.8 mm and CEM from 9.8 mm to 20.0 mm.

Yes, all 23 cutters are 12.7 mm (1/2"). One 1/2-inch collet takes the whole range, from the 12.7 mm cutter up to the 50.8 mm model.

No. Metric models such as 1/2*32*15 keep the 12.7 mm shank — only CED and CEM change, so the same collet and the same torque path carry both naming systems.

Only the CED steps differ. Imperial models are named in inch fractions (1/2*1-1/4 = 31.75 mm CED), metric models in millimetres (1/2*32*15 = 32.0 mm CED), and both use a 12.7 mm shank.

Wood, plywood, MDF, plastics, acrylic, PVC and solid surface are all on the applicable sheet list, and the cutter is catalogued for cutting, milling and engraving wood materials.

Edge-banding machines, engraving machines, cutting machines and hanging machines are named in the fit list, and the bits also run on CNC routers and hand-held routers with a 1/2-inch collet.

Yes. Each of the 23 sizes is its own model number — 1/2*22*15, for example — so you order the single cutter you need, and the price is quoted per size.