hehndc
Member
I have been making some cartridge pens and am having some difficulty drilling out the bullet tips. I figured this gave me a reason to get something like the Beall chuck with the different collets. After some reading, I see various ER numbers associated with the collets. I assume the numbers relate to size or the range of sizes the chuck can hold. Anyway, what does the ER mean?
Thanks for your help.
Steve
Thanks for your help.
Steve