Un boulon rayé au pas de ? pas tout à fait un canon mais presque. En France ça deviendrait une détention illégale de boulon à feu probablement de catégorie B vu que trop court 😁
I used something similar many years ago and if my memory serves me correctly it was a commercially made tool very similar to the one you made. The only difference was that the bearing race ran directly against the workpiece rather than a single loose ball that you have. I found that it worked better if it was running slightly angled rather than square on in order to allow the radius at the edge of the bearing to exert more pressure.
U Are very lie drill hole is true but after that were fake Steel bolt rod is harden why u lath it by hammer hand I ever seen other lath rifle barrel .They not do as U
Gear buat sendiri dengan mesin bubut bang ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-5dQMuHMfxa0.html ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-i0Y7sOFyHko.html
Bahan ancuran lebih tahan gesek dan tidak memuai kl panas, memang harus besi ancuran atau cor, kalau minta besi biasa malah tukang bubutnya seneng, tinggal potongin pipa beres dan bahan malah lebih murah