Like everyone else who has a Dremel mini drill press, I searched far and wide for hold downs that would fit the little grooves on the bed. No luck.
I ended up making these 3D pieces and they work great. Mind you these are light duty - but that's typical of Dremel projects so it's all good.
Print these at 100% infill for strength IMO.
I used #10-32 1inch and half bolts and nuts. Also a washer.
I have several 3D printed jigs to help with various Etsy projects and have found these hold downs do the job. Good luck.
I used Gorilla epoxy to permenantly glue the bold heads and nuts into place.