It's a personal choice but I did radius the outside edges of my dies using a grinder and prefer them that way. It gives the end of a push on a billet a softer edge than a sharp edged die will. If that is weld sketched in on holding the dies to the holder don't put that much on. A 1/2" tack on either side will hold them on and make it a LOT easier when time to replace them comes.
I fully agree w/ Ed in that the leading edge of that die needs support. The anvil should extend to at least that point and the die holder also or you will be bending things - especially w/ that big boy cylinder.
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plain ol Bill
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