The ASM1 is a 2-flute arc tenon router bit listed for round-table mortise arc cutting. It has a 12.7 mm (1/2 inch) shank, a 50 mm cutting width and an R4 curvature. Use the arc dimensions in the joint drawing and a test piece to confirm the resulting fit.
Listed specifications
| Specification | ASM1 listing |
|---|---|
| Flutes | 2 |
| Shank | 12.7 mm (1/2 inch) |
| Cutting width | 50 mm |
| Arc curvature | R4 |
| Listed application | Round-table mortise arc cutting |
Match the bit to the joint
- Check that the 12.7 mm shank matches the router collet, CNC spindle or holder.
- Compare the R4 curvature and 50 mm cutting width with the arc or tenon geometry in the project drawing.
- Confirm the cutting depth, workpiece thickness and machine clearance before setting the tool height.
- Plan secure workholding for the curved or round-table component so it cannot move during the cut.
Test cut and safe use
Make a test cut in matching scrap and check the arc, depth and joint fit before machining the finished component. Use the machine maker’s speed, feed, guarding and cutter-installation instructions. Stop if the tool chatters, overheats or shows damage, and inspect the cutting edges before reuse.
Common questions
What is the ASM1 flute count?
ASM1 is the 2-flute version. Choose it only after checking the machine guidance and the required arc-joint setup.
What shank size is listed?
The listing specifies a 12.7 mm (1/2 inch) shank. Confirm your collet or holder size before ordering.
For other profile options, browse the replaceable insert profile cutter category. Send the machine, holder, material and joint drawing to sales@bitsrouter.com if you need a compatibility check.













