I am a professional fabricator. Been tig welding for 28 years on mostly steel, aluminum, and titanium < .035” this entire time.
Tig is the most efficient, detailed, precise method of welding there is for thin material and would be the preferred tool for the majority of Pinball related fixes.
Tig, however, is also the process that requires the most skill to learn and time to master.
A simple at home system will require the basic machine with smart voltage, Air cooled torch, foot pedal or finger control, ground clamp with cable, tank of inert gas with flow regulator, non-consumable electrodes, filler wire in various sizes and metallurgic compositions, welding hood, light protective gloves, stainless steel brushes, and a bottle of high percentage alcohol and clean cotton cloth’s.
The most basic of systems can be had for around $1200 all in.
Acquiring equipment, however, is the easy part. Plan to invest a couple weeks just in learning welding process, theory, and basic set up before you will be able to run even an acceptable bead on flat material, let alone a corner bead on the scoop.
However, once you attain a basic fundamental level of skill, you will be able to weld thin material and have a finished product with no post fabrication touch up required.
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