Hi, I like your tables and plan on investing in one once the budget allows! Have you put any thought into producing a collar that could be mounted to a 5/8 fixture to make it compadable with your 3/4 tables? Could be tacked at the bottom for a permanent change to the fixture, or perhaps a recessed pressure screw so that you can retool your fixtures depending upon the table. It would be easier for me to justify the table purchase if I knew my current fixtures are still usable. Best!
I would like to see this too. I would like to be able to use different brand fixtures and clamps like the pivoting clamp from Buildpro.
I think I’d also like to see a 3/4" grounding adaptor like Buildpro makes for 5/8" and 28mm holes.
You could use a drill bushing but they are much harder than you would need.
You would have to do some research, I am sure there are some plain steel bushing that would work. The size you want would be very common.