The 1/4 round router with a 1/4 shank is a wood-cutting bit for CNC routers and conventional routers. This is the bit that adds elegance to your woodworking CNC project that gives it the extra character to make it stand out. The radius bit will round the borders or letters. It doesn’t matter, as long as you have 1/4″ to play with on your project, this 1/4 round cutter will spice your project up.
The IDC Woodcraft brand 1/4 Round Over Router Bit (a.k.a. rounding bit, radius bit) simplifies the toolpath setup. It is designed to come to a point, instead of having a flat at the bottom. This completely eliminates form-tool setup in your CNC design software. NO OFFSETTING OF THE 1/4 ROUNDING BIT IS REQUIRED!! Just set it up to run on a profile line at 0.245″ deep and you end up with a perfect radius that requires minimal smoothing.
Uses: Rounding cutting board edges, box making (edges and lids), and more
- Shank: 1/4″ (6.35mm)
- Flutes: 2
- Length: 2″ (55mm)
- Radius: 1/4″ from center of bit
- Material: Tungsten carbide brazed insert on 4140 body
Settings for your CNC router
- Plunge rate: 20 ipm
- Feed rate: 60-80 in/m (35-47mm/s)
- Stepover: 6-8%
- RPM: 14,000-18,000 (for Makita trim router, set to 3)
For CNC’s with routers, refer to this PDF download feeds & speeds table