Join Date: Aug 2010
Location: Port Elgin, Ontario
Casters attach to the benches the same way as the feet...screw them in place, level them, and then tighten up the locking nut.
14 mm (1/2 inch) sounds about right, can't tell 100% because the threaded portion on the casters is hidden in the frame of the box. (Another nice finishing touch)
Shouldn't be too difficult to find a set.....wouldn't surprise me if they had them in stock.
Let me know how you make out....that's a great idea, might have to do it myself if I ever get the time to put it together !!!
- 6550 lb bundle of joy