Alignment Block For Accurate Threading
Alignment block for accurate threading is bookmark about Hand Tools bookmarked by bob with ID 1651675346 was uploaded on 18-02-2019 and has been viewed 319,811 times.
I wanted to make my own maple handscrews, but found that freehand threading of the 5/16-in.steel rods invariably resulted in erratic thread patterns and wobbly clamps.I solved the problem by drilling a pilot hole through a 2-in.
block and fastening my die holder directly over the hole with little maple brackets.To ensure firm damping pressure, the cutouts in the brackets should be a fraction shallower than the height of the handles.
I now get perfect threads every time, both right-hand and left-hand, and have produced a number of beautifully functional clamps at a fraction of store-bought prices...