Chainsaw Repair

Ok sorry I did not know you meant it for aluminium.

   I saw this demonstrated some years back at a swap at I was at one  time.   If I remember right the flame had to be at just the right distance and heat range to get it to work and flow real nice.   It would take some practice but I can see it working.   The other thing about aluminium is that you have to clean the surface real good because of oxidation.   The oxidation actually takes more heat to get through then the aluminium itself.   So you have to clean it well enough to get ride of the oxidation.   I use a stainless steel brush because once again a regular steel brush will contaminate the weld.   I think scotch brite works well too.  Hope this helps.