Cut off the head, use a grinder or saw to make a flat area (or else you can split the screw down the middle)
Another recent scope at the NCA – ATM workshop at the CCCC
11 Friday Mar 2016
Original size at 1023 × 467
11 Friday Mar 2016
Original size at 1023 × 467
Cut off the head, use a grinder or saw to make a flat area (or else you can split the screw down the middle)
Guy's Math & Astro Blog 
