Drilling holes in Spoil Board

I recieved my delivery from Onefinity Woodworker on Jan.14 and I am finishing up on the spoil board. I’m not sure if i want to use just a grid on the slats of the spoil board or go with all the threaded inserts or just a few rows of dog holes. I can not seem to find anything on using the Makita router and an end mill to drill all the holes, I know I can’t use a flat bottomed bit. But are all the holes cut with a 1/8 bit or 1/4" for 1/4" holes or 1/4" for the 3/4" dog hole?
I mean a plunge router does it so my machine should correct?
I just need a push in the right direction.

I put threaded inserts in my Shopbot and used them a lot but that was because I didn’t have t-track for clamping and it was BC (before cyanoacrylate) and painters tape became a thing. I also hadn’t ever heard of a pin nailer. Now I use pin nails or the superglue/tape method almost exclusively. I’ve got a QCW on the way so I’ll add t-track clamps but I haven’t really needed them. I just carve a new set of grid lines (& #s) every time I have to resurface.

Inserts are great until you’ve reached end-of-life of the spoilboard and need to replace it. Now you’ll need to put another 250 inserts into the new board. Or you make a spoil board that sits on top of your threaded wasteboard with just holes that let you access the threaded inserts.

If you do go with holes, you can drill them using a 1/8" upcut using a spiral inside profile (in VCarve - I expect other CAM software has similar functionality) and get perfectly sized holes. You can use the same technique for the dog holes using the same bit or just use a 1/4" endmill with the same spiral technique.

If you use your CNC to make them, then you can use the same file when you need to replace the spoil board.

Thanks Jim.
I do have vcarve and learning it slowly. I think because I have t-tracks I’ll just add dog holes for now. Thanks for your help.

Hi all,

I used a multi-option system for my waste board.
Basically, I wasn’t sure at first what I would like/need as far as clamping options, so I designed a waste board that includes dog-holes, t-tracks and threaded inserts.

Each piece of waste-board is exactly the same so if I need to replace just one piece, I can do that easily. I also didn’t want to deal with remove and re-installing 100s of threaded inserts, so once I figured out where the waste board pieces would go, I used my Onefinity machine to drill the whole in the table and then hammered in t-nuts from the bottom.
I also add 3 holes in each waste-board piece to secure it to the table. Easy peasy to change a piece of waste-board if something happens.

Hope that might provide ideas for other people.