probably good old fashioned glass, anything else is likely to melt under intense heat!
A number of factors go into this: base material thickness, joining material thickness, wire thickness, shielding gas composition, angle of weld, etc. The best way to determine this is to measure your material, then open your MIG welder, find the wire size of the spool, and read the chart inside of the MIG Welder door.
A certified welder is one who has successfully passed the requirements of an industry specification for welding in a particular process (SMAW, GMAW, FCAW, GTAW), and in a specific position (1G, 2G, 3F, 6G, etc.), with a specific material (mild steel, aluminum, stainless, etc.) The certification relates only to the specification that was qualified to, in the position qualified, on the material qualified, and only with the process used. A master welder is one who can, or has, passed the most restrictive position (Usually 6G), in all processes, and in many different material groups. There is no mention of "master welder" in welding specifications, it is usually an internal company designation. It is expected that a Master Welder can weld any material, in any position, with any process.
the best way to get a good looking/ strong weld on aluminum is using a tig welder it is also possibles with a mig welder but for best results recommend a tig welder with HF
Sober and drug free.
Becoming a welder is very difficult and take a long time to complete the training. The best school in tennesse to start this training is Wyotech.
The best type of material that conducts sound the best would be any solid. Only because of the sound that hit the compacted atoms and it would travel the fastest.
The best material would be leather. It is durable yet warm and good for kicking soccer balls.
If you plan to embroider your bag by hand then cotton would be the best material.
nylon
I would have to say Stucco would be the best bet for texture.
Frabic
The best rig welder job will depend on a lot of different factors. You will probably want a rig job that offers a vacation of two weeks (hopefully with pay), and that gives you health benefits and 401k.