Originally Posted by
heretic
First viewer !
Nice video. I have never used a truer but I have cut my fair share of comms so I can relate.
Random comment: You understandably insist on not relying on the markings for actual measurement but just for reference. What about using a plastic or metal cylinder with a known diameter to calibrate your tool placement ?
Then you could rely on the graduation. It seems like it would save you a LOT of time, and you could just use the calipers at the very end as a double-check. Anyway. Thanks for taking the time to shoot this ! I will put it to use... one day.
It's a nice idea but not practical. Different foams behave differently on the truer.
A softer foam expands more when the wheel is in motion, so you have to adjust the cutter out. A harder foam expands less so the cutter is adjusted in. Also, the depth of cut affects the final diameter. The more cut you take, the slower the wheel turns so the smaller the diameter is cut.
It's a matter of getting used to the truer and knowing where the adjuster should be for the tyres being cut. Foam is an awkward beast to cut, and getting the right diameter isn't as easy as it looks! HTH