[DADSGARAGE]

Got started building the boom...finally...started by laying out the sides and cutting them in the band saw.





After drilling the pivot holes I bolted on a couple of heavy washers (turned on the lathe) that had the proper diameter/ radius and then used the belt sander to grind the radius on the ends of both plates, the thick washers act as a guide and or stop point while grinding the rads by hand.