E 'was a work by contortionists, the positions were very very hard, we settled with his right hand with his left hand, lying on the ground, without seeing, and so on.
Welding aluminum is not difficult, it is difficult to weld an aluminum hull.
In practice the hull does not turn, and then you have to be spinning. Do you think that every time you change the type of welding (front horizontal, frontal up-down, flat plates with corners, curves with curves, etc.. Etc.. Etc..), The current setting / wire must be adapted.
After phase 2 (battens / ordered) we started the phase 3, the outer hull. We positioned the welding on the roof of the boat and one out, we settled down a whole day.
Welds most difficult are those that run vertically from right to left, when in fact it makes the cord, creating a small notch at the top will look ugly, but welding is well above the metal melting, for gravity drip into the solder, and when he drops the whole, remain small fossettine. By decreasing the eletricity this side effect diminishes somewhat 'but does not disappear completely at the end should not melt and stick, we called two welders professionals our friends to view the problem and they have assured us that, unfortunately, brings to this position, welding "eats" the material.
Nothing to worry about though, is just an aesthetic fact solvable, when we will discard all again with a new cord to plug these micro pits (we already tried it and it works).
And now we talk about the much feared tensions and twists, they appear only on sheets that have been "forced" into their final position, the calendered sheet well with the radius curve right, not subject to any influence, either by weld more long, on the contrary, those few sheets that had not come well and were clamped by force, they tend to return to their place, just heat, creating imperfections. On the latter the cords should be smaller.
then I remind all that aluminum is not human flesh, the welds blunders you can always cut and redo or wipe with double or triple cords, discard them and belittling countless times until the result is not perfect. The "bad block" an area not to the liking can always be removed and replaced.
The most important rule to follow? Always clean and discard the parts before welding, the impurities are harmful and before joining the various seams between them, we do a little cut on the cold welding hose.
There are wide margins of error, be quiet. To us, this has not happened so far and all work is coming, but we too are a bit reassured 'by observing, talking and information with people who know more than us.
This week we expect to finish the outer hull.
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