I have used a rolling sear which is 3/16” dia. X ½”lg. alloy steel dowel pin from True Value hardware. It was shortened to 7/16”lg. to fit in the case and then mounted axle style on twin miniature ball bearings. These were then pressed into reamed holes in twin tickler lever plates. The only item that I heat treated is the top swing latch which 3/16” ready ground O1 steel plate from a local tooling supplier. I regularly clean the innards and pack the bearings with wheel grease. Those plastic spacer pieces including the removable trackway are hmwpe from local supplier scrap bin. The 1/8”thk. side plates are from Lowes.
This crossbow is not for hunting, it is an experiment to try out the sighting method used in annual summer tournaments by the Italian and Croatian towns. They use a long sighting radius with the arrow as the front sight and 2 other components to aid in eye placement to serve as the rear sight. No peep sights! Since there is no arrow for me to sight on, I mounted a twin pillar affair way up front.
Last edited by SEPTUA on Mon Apr 25, 2016 9:53 am; edited 1 time in total (Reason for editing : typo)