Jig

No, not a dance.   I mentioned using 6-32 screws to hold the threaded inserts in the bearing blocks while the glue set.   

I was not happy with how that worked because one ended up a bit askew.  So I machined a jig for that purpose.   I excavated a 1.12" x 1.12" x .25" hole in a piece of acetal, then four .15" x .125" slots corresponding to the screws.  I do not expect to do this setup more than a few times, so I used a piece of scrap acetal. 

Now I can insert the bearing block with the screws and inserts down and the slots hold the inserts about right.  I let the glue start to cure then wiggle them to about square. 

This was before I went back to wiggle them to square.