Largest Bottom Cleaning Bit that can be used on XXL Shapeoko

[Birdman1979 (Josh Terryah)]

Hello Everyone!

I use a Shapeoko XXL. I am wondering the largest cutting diameter “bottom cleaning” router bit that can be used? I have some plunge cuts that are large is surface area and using a 1/4" diameter takes forever.

Thanks
Josh

[RichCournoyer (Richard Cournoyer)]

I presently am using a 1.312" (33mm) diameter cutter.

[Burly (David Flowers)]

This link may help.

Standard wood router bits F&S calculations

Please don’t use Amana’s speeds and feeds shown in the first picture. But you should be safe with the values shown in the second (for all but the hardest of woods). You probably shouldn’t exceed the manufacturer’s maximum speed for the bit or plunge with it unless it’s designed for that. Note that reduction of speeds will likely cause proportional reductions of available cutting (router) powers and increases in machine forces. Also, reduction of feed-rates, depths of cut, and/or widths of cu…

[Jairo (JairoCruz Rua)]

This is the end mill I use. It does well and leaves a great finish.

[Amana Tool 45525](Amana Tool 45525 Carbide Tipped 1-1/8 Dia x 1/2 CH x 1/4 Shk x 1-19/32 Long Spoilboard Surfacing & Flattening 3-Flute Router Bit 5.0 out of 5 stars 4 https://www.amazon.com/dp/B07PYX5S5J/ref=cm_sw_r_cp_tai_ah3eFbCC1W696)