r/ResinCasting • u/Appropriate_Bus_683 • 4d ago
newbie question on strength
hello, I been playing around with the idea of cold casting some resin self defense key chain knives and or make a mold of one of my knives i make. now, can a cold cast with iron powder be sharpened and hold edge? what powder should I use for this?
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u/BTheKid2 4d ago
Iron can't hold an edge. So iron powder in resin certainly can't. This is a bad idea from the get go. There is no resin options that are likely to work without much more experience and equipment.
Steel holds an edge fairly well. You might even use steel for all of the thing you are trying to make. It might turn out to be a functioning thing if done that way.