Hi,
I use a shrinking disk from time to time on aluminum. To prevent surface damage, I coat the disk and surface with soap. It still marks the surface, but good results. I have switched over to a wood shrink disk, that works very well and tool mark free. It takes a little longer to get the same amount of shrink, but worth it.
B
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Bill Tromblay
"A sign of a good machinist, is one who can fix his F$@& Ups" My mentor and friend, Gil Zietz Micro Metric Machine.
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