2) 3 1/2 angle, 2) 3/4 bolts W/o heads, 2) 3 in flange bearings, milled slots referenced to 3/8 i.d. rollers. Will be using 4 1/2 in bolts to incorporate open/shut stops on supports.
Yes, I have to get to this before long and I'd like to see how you go about it. Not many decent threads on here any longer. Please follow up. THANKS!