I have done a few
I no longer bother as fuel these days seems to eat them
The bottom line is you need to prepare properly
Cut your mesh and tin the edges you are going to solder. Use lots of soldering fluid and clean well afterwards
I found that the tube was very hard to tin correctly
Once everything you need tinned is done you shape it and solder the seams using just enough heat to get the solder fluid
Clean up well and you should be on a winner
Hope it helps
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