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Sometimes I get viewers asking why I use a certain material - most of the time it's because of what I have to hand but this video runs through some of the more common materials in my shed, why you might use them and some tips to tell them apart.
https://www.youtube.com/watch?v=tMlLrPWedc4
Good video especially for new bees like myself. Just a little on 7075 aluminium I was employed as a Metalsmith in the Dept of Defence, one job was to repair bridging which was made of that grade, all fabricators had to be instructed on the welding of it as it was peculiar stuff, even some of your best efforts would crack a day or so later.
I've never used 7075 in the shed and even if offered pieces for free would be reluctant to accept for those sorts of reason. I seem to remember that it is so sensitive to environmental conditions it is clad either side with a thin layer of 1000 series (ie almost pure) to protect it.
I much prefer 5000 and 6000 series at home for it's general robustness and application.
Michael
Me too !! thank you Michael