Spindel work board
Cut a rough shape out of 3/4 inch ply wood and mark out equal spaces for slots.
Drill holes and band saw out slots and make a T brace for the bottom.
Some hardware for the spindles.
Set up on the drill press to center holes on 1 1/2 inch dowels.
Wing nut and washer on the bottom.
The spindles can be pushed in or out and locked into position.
shown with guitar sides and spreaders.
The jig can be used for different glue up procedures and different size guitars.