Lack of penetration on AL

[Richard.]

scotland always been miles ahead in welding skills

@Wozzaaah in this case can you turn a blind eye to bad language please mate.

 

[zeppelin builder]

Zep I'm a qualified welding inspector. Multiple passes on that joint would not be required. It would likely make things worse with the size of the haz you would achieve. In your line of work yes an open root full pen, multiple passes to fill the joint. You can't take that approach to a 6mm lump of Alu box nor can you tell me a welding inspector will want to see that either.
Welded properly (and the op has done a good job of showing it done well) square edged prep plenty of heat at start up, nicely blended toes like you rightly said and there is no reason you cannot get sufficient penetration, fusion, fill in one pass on that.

hee hee on a lighter note my mate was stick welding in a power station he seen the white hat appearing thru the access in the scaffold lloyds man straight over and felt the quiver thats fine its hot looked a young lad my mate says how long you with lloyds about 6 months mate ok what was you last job i worked in a factory fitting the handles on frying pans on the fly press you see we dont like ex welders as they are too sympathetic to there fellow tradesmen changed days you used to have a first engineers ticket when you saw the guy in the whiye coveralls you used to respect him

 

[Richard.]

hee hee on a lighter note my mate was stick welding in a power station he seen the white hat appearing thru the access in the scaffold lloyds man straight over and felt the quiver thats fine its hot looked a young lad my mate says how long you with lloyds about 6 months mate ok what was you last job i worked in a factory fitting the handles on frying pans on the fly press you see we dont like ex welders as they are too sympathetic to there fellow tradesmen changed days you used to have a first engineers ticket when you saw the guy in the whiye coveralls you used to respect him

That doesn't surprise me

 

[Brad93]

I don't know how to do your job but my book says you're doing it wrong.

 

[zeppelin builder]

i think id be found out very quickly and run off the job not happened yet so cant be too bad thats 42 years ,welders are like movie stars ,youre only as good as your last film