As soon as it warns back up the heat will catch friction. depends on how quick you are. What are you trying to do? Custom fit a seal?
Turning rubber ****s unless it has a high durometer. SHARP cutter with lots of back angle and the right speed/feed. The guys that lag rollers for us grind the OD's. Could rig something up in a pinch, but be prepared to deal with the dust.
Okay, ***ume a bushing of some type? Or is this a solid piece? A bushing could be done with a little thought. Solid? Not likely.
In a past life, I used a grinder set up on a lathe to size rubber for puck type mounts...military contract stuff.
My experience has been you can depending on the density of the rubber. Recently I used a hole saw making some from hockey pucks. Years back I made some rubber body mounts from the dense rubber stuff they use in skating rink walking surfaces. Chucked a threaded rod in a lathe and with a nut squeezed them tight, high speed and walked across. No need to freeze just make sure it's tightly supported and the bit sharp, peels off like an apple skin. Soft rubber will gaul and gouge so best to test the procedure.
This works, but makes a shirtload of rubber dust. An 80 grit flap disc gets rid of a lot of material, change to a finer grit to finish.
It depends on the rubber, harder is more likely to work. It is going to want to squeeze out of the jaws so put some thought into how you hold it. You can also grind it if that will work for your application.
True. I had a vacuum rigged up to catch most of it. Also true. The rubber I did started out as a square piece with a hole drilled through the center. Several pieces were done at once, they were all fed onto a threaded mandrel and clamped up. The chuck held the mandrel and the loose end was supported by the tail stock. Made thousands of them this way.
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