McMaster has machinable wax in blue and purple colors, their site doesn't mention the difference between the two color types, are they different hardness? I'm gong to be machining a pattern on my Bridgeport mill and I guess either one would work. Any suggestions? After I get the pattern done I'm going to use it to make several copies in resin and then use those for a Al casting pattern on a match plate.
Thanks
I don't know about the purple but the blue doesn't like small protrusions. Little stuff sticking out has a tendency to break off in machining. Other than that you can run full blast and whip out test fit parts quickly.
By the way, if you re-cast it, the shrinkage rate is huge so don't expect to recover any large blocks this way. Small blocks can be re-cast from the chips and sawn pieces though which saves money as the stuff is a little spendy.
Koz
I have tried both and prefer the green, it is harder than blue and purple and doesn't gum up. Alan Black
Thanks Alan for your reply, green wasn't available in the size and price range I wanted so I went with the purple, I'll have it tonight, and play with it tomorrow in the shop.
Jack
"Alan Black" wrote:
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