I use a hole punch to do such things. I buy one at Michaels that it says it is 1/16 but it is more to be 1/8, which is fine. But they come in sizes...
The punch it has a cover but the way I use the punch is to lift the cover so I can see to align the punch around the part. Then when you carefully squeeze the punch just make sure to keep the perforation.
If you look for the posts I make with my Traction Engine tractor I make the wheel hubs with the punch and also some small pulley wheel.
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