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Heat Affected Zone. The area that is affected by heat from he weld. When using a thicker rod I have to apply more heat to get it to melt so the discoloration around the weld is wider as the heat has spread farther into the panel which can cause more warpage.Looking good...HAZ?
I could but it would be more awkward than it's worth for the vast majority of it. It's hard enough reaching a lot of these welds without having to try and drag an air hose around while trying to keep the head flush with the work piece so I don't gouge it all up. The majority of my planishing is done with slappers so the amount of time it would save me isn't worth the potential hassle.K13, Can you not use the air hammer bolted to your planisher stand as a remote with a dolly back up? Thats what I used on my 35 chop around the windows .
Yes and no. It involves hammering but there are different ways of "hammering" to try and achieve a smooth surface. On dolly, off dolly, using small heads like a hammer using larger surfaces like a slapper. Using files to find highs and lows etc. If you can pick up a copy of The Key to Metal Bumping by Frank Sargent. It is kind of the metal finishing bible.So planishing is just another word for hammering....
Yes. The one on the left is a Martin and the the other is one I made out a piece of leaf spring.View attachment 1980
These are the slappers?