Heres a few helpful Carbide Create files:
Work holding Clamps and a threaded insert grid pattern (with recesses) for the XL and XXL Shapeoko machines.
I was able to use the Makita router to cut the bed grid by flipping the collar upside down, which lets the router sit about .25" lower. By leaving the tool hanging out of the collet 1.75" you can get .65" deep into the wasteboard - just enough to drive the threaded inserts into the stock wasteboard.
As always, test your perimeter and extents before walking away for a coffee re-fill.
FYI: I made 2 separate grid files, one for the front and one for the back- I got tired of clicking circles so when I got half way through the job, I saved the file and then shifted the pattern to the front of the bed and saved it as “Front”
First time users; please check your Max Z depth twice! Be careful not to drive the Z carriage to low ( it will slip on the belt)
256 Holes and inserts on 2" centers.
Heres the Carbide Create “Rear” design view.
Makita router sitting as low as possible in the clamp with the collar flipped.
I didnt want to spin the inserts in the MDF, I used 5 on the dial and that worked.
EZ lok makes a M6 and a 1/4-20 version of this insert. (via amazon)
Cut Preview of the rear of the bed grid. the holes are 9mm and the recesses are 12mm.
The T 40 driver will work best IMO to drive these inserts.
After saving the “REAR” i shifted the pattern to the front.
Another view of the Makita sitting low.