Hi...my hubby did that for me. I've posted a link below where you can see it. I didn't use the plexiglass table either. Hubby made a fill in piece from MDF to fit the hole and it works fine. I take it out if I need to use the free arm and just leave the machine in the hole and I can still use the freearm.
Good luck with it...you will love it
http://www.quiltingboard.com/picture...on-t76568.html