reamer or drill
The finish hole size has to be 5/8. I currently cut pulleys on a cnc on mdf material.
I cut the hole a bit smaller and then use a lathe and a tapered reamer to get to the correct size. I reverse the pulley to make sure that the hole is flat. I know that a tapered reamer is the wrong tool to use to reach the final size.
My friend, a machinist and a woodworker, suggeted that I use a 5/8 drill instead of reamers. I always thought that a 5/8 drill would make the hole slightly larger than 5/8 due to the nature of drills.
I don't have a 5/8 drill , nor a straight reamer, so before I shell out some big buck, I'd like to know what to use. I need to keep the holes constant, since they are for consumers.
I am also wondering if I can make a tool, since I can control the hole with the cnc and then "lightly" touch it up. The material is 3/8 mdf.