Tiger
Member
Just recently bought some Cigar pen bushings and they worked out ok for the first 2 or so pens. I then began to notice that the blanks I was producing were not concentric, couldn't work out why. First I thought that some glue had seeped onto either my blanks or the bushings, made sure that both were ok, same result. Cigar pen bushings have a double-ended bushing which I tested on my metal lathe and sure enough it was out of true, not significantly but enough to ruin my blanks. How often do people check their bushings and how do you do it? I do often turn between centers and use digital calipers but must admit when under time pressure I'll use bushings as a guide to get close.