adapter for bench grinder
I got a bench grinder on CL. It has 13mm arbors, which are just slightly too big (0.519") for 1/2" (0.500) holes on most grinding wheels.
I could get a grinding wheel that comes with an arbor adapter and drill it out, but I'm wondering if there is another way. Any suggestions?
Here's my thoughts so far, let me know if you got a better idea:
1. I have a lathe and metric drill bits. I'm concerned that the plastic arbor will just get deformed when I put it in the lathe chuck, even if I just lightly tighten it, that it will get spun around by the 13mm drill bit if it's not held properly, and the wall will be really thin (just over 1/64").
I haven't bought new grinding wheels so I don't know how hard the plastic is. I was going to buy Norton ones that come with an adapter.
2. I thought of making a metal (aluminum) adapter for the next hole size up (usually 1").