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Old 2008-07-18, 3:07pm
Dale M.'s Avatar
Dale M. Dale M. is offline
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Join Date: Jun 10, 2005
Location: A Little Bit West of Yosemite Valley
Posts: 5,200
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As said in many threads, flashback arrestors are not needed on surface mix torches. By all means if it makes you feel safer use them.... The SM7 should be good up to intermediate work, beads or marbles up to about 1.5 inches if you are going to want to go bigger, then the SM21 tip should be used....

As for changing tips, I don't think its going to be a "quick change" situation.... Remember torch head is a big chunk of machined brass and it is going to be quite HOT..... Probably not a good idea...

Dale
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Last edited by Dale M.; 2008-07-18 at 3:10pm.
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