Quote:
Originally Posted by skintkarter
Thanks also for this guys. Just starting to use my APH a little now and was struggling to get a nice finish. Shaped things no problem, but the final planish still left hammer marks no matter what I did to the gap or air pressure. Having a true radius die is now the suspect. I'll give them a doctoring before the next job.
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For the APH -
I like using flats when shaping, and having different flats for one radius can be helpful. --
http://www.tinmantech.com/products/f...mer-dies.php#2
Sometimes for planishing I prefer a lack of flat, but not a "true" radius, or maybe what I would prefer to call a "constant" radius?
Constant radius dies have one radius all the way across. But there are times when I prefer a "multi" radius die for planishing - like a triple angle valve seat?
Having a slight crown in the center can be more helpful than having a flat there - for planishing.
Sometimes.