wbill76:
For those who are struggling to find just the right circle templates to use...try this one on for size: http://www.draftingsteals.com/21318.html It's the one I use personally and it's extremely rare that I can't find a circle to fit what I need done.
Bill,I ordered one and used it today to paint the wheels on my 1/48 Stug III,it was great, there's no going back,I simply masked off the hole I was using,then wiped off any overspray with alchohol,great addition instead off the cheap one I got from staples.