Tinbasherdan
Bodger in chief
- Messages
- 7,435
- Location
- Bolton, England
I might get round to having another play with one some time 

It’s not a great idea to do so in a lot of instances.*Think the best thing with tig is going back over the mistakes with only the torch to smooth things out..
Yer no bad, mannieagain manual Ti free hand View attachment 141741
Yer no bad, mannie
aye my pal was asked : are you the best welder around .? no he said il settle for second best . why is that he was asked ?well i havent ever met number one yet !
It’s not a great idea to do so in a lot of instances.*
Every time you go back over the joint you increase the size of the HAZ.
Messing about with bits of plate it’s not gonna hurt but with something designed to take load do it once only on single pass work. If its a little lumpy or untidy you’d be better off fettling it with an abrasive to blend or neaten rather than going back over it with a welder.
* there are obviously times where we multi pass and certainly on thicker sections it’s required to go over and over to fill a joint. In these cases it’s the norm to work to interpass temps to keep heat input down and mechanicals up.
Aluminium is particularly weak when there is over sized haz going on. I’ve seen it many times tear like paper right down the side of the joint when people have unnecessarily welded over and over it.