SHORT ANSWER I CAN ONLY GET 3/8" PAD SITTING IN THIS @!*% WHEELCHAIR INSTEAD OF 1/2". I GUESS I SHOULD BE HAPPY. MY MATERIAL IS 1/8 X 1 1/2" THATS ALL I HAD ON HAND
That is not an unreasonable outcome... especially for a first attempt. Next time you will use you current experience to guide your future actions in regards to starting material size, technique, and how far you can go (Without getting greedy... when almost done, cracking due to work hardening is frustrating as it kinking due to not having smooth tapers. Ask me how I know this?
). As with pretty much all pre-interchangeable parts (John Hall interchangeable, not Eli Whitney interchangeable) parts were typically made to patterns or copied by eye. I'd have to say that it would a coincidence that two parts were
exactly the same rather than by intention. My example trigger is an interpretation of one in the Williamsburg gun shop at the time. Is it exactly the same as the original, no. Is it pleasing and functional, yes. I imagine yours will be pleasing and functional too...