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Old 05-27-2019, 12:58 PM
crystallographic crystallographic is offline
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Originally Posted by skintkarter View Post
Thanks Lewis - just been having a play this afternoon and the larger tip certainly is helping.

Attachment 52951

Attachment 52953
Richard, Your technique is looking better.
Try working in 2-3inch stretches, then extend filler rod and go again.
Inner cone is a nickel thickness from the metal.
45deg angle is "average" but can go down to 20deg with hotter flame/thinner material.
A quick twist of the wrist flicks the flame up off the weld to cool, then right back down to weld. You can dab filler and flame synchronous or alternating then when "sag" appears you flick the flame to cool, and then back in the dance.
Aircraft weld inspectors could ID each welder by the "fingerprint" of their welds. Rare welders can copy other weld styles enough to blend repairs right in.

90 deg is max heat - for tacking or starting up.
Back-cracking from edge of panel is from welding in from edge- always start welding from 2nd tack on aluminum, and then go back and weld out to edge that inch or so.
Which eyewear are you using?

Work with rhythm. Waltz music (Blue Danube) has a great pace to weld aluminum with.
Books have been written about this .... (NOT Finch, though)
Keep practicing,
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"All it takes is a little practical experience to blow the he!! out of a perfectly good theory." --- Lloyd Rosenquist, charter member AWS, 1919.
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