You don't have to be a professional tig welder to repair aluminum professionally.
You can actually Braze Aluminum and repair cracks, holes, leaks, rivets, broken ears, threads or fabricate aluminum, cast aluminum, and cast iron quickly, easily, and stronger than new.
It's not hard at all
ADVANTAGES OF BRAZING OVER WELDING:
Cost of Equipment – No argon gas, wire spool, gloves, shield, or electricity required.
Portability – Stores easily, along with small torch.
Skills Needed – Simple instructions virtually anyone can use. No flux, chemicals, or special cleaners required. 100% guaranteed.
Danger – No high voltage electricity used.
Oily Aluminum – Heli-arc boils aluminum and any impurities below the surface must be brought to the top and cleaned off.
Thin Aluminum – Melts 500 degrees before aluminum.
Different Alloys – Works with any alloy of aluminum or cast aluminum.
Time Involved – Makes many repairs much quicker than conventional methods.
Filling Holes – Instantly fills any size hole for threads much stronger than the original threads.
Versatility – One product fills cracks or holes, rebuilds ears, seals leaks, or permanently bonds flat pieces.
Heat sources include a propane or mapp gas, a turbo tip, or oxy-acetylene torch and special material.
Many new and used parts that can be repaired:
Aluminum Heads, Cast Iron Heads, A/C Lines, Timing Covers Manifolds,Fuel Tanks, Wheels, Aluminum Boats etc. can be repaired stronger than original. Brazing is a group of welding processes in which materials are joined by heating to a suitable temperature and by using a filler metal with a melting point above 840°F (449°C), but below that of the base metal.
The filler metal is distributed to the closely fitted surfaces of the joint by capillary action. The various brazing processes are described below.
Torch Brazing (TB). Torch brazing is performed by heating the parts to be brazed with an oxyfuel gas torch or torches.
Depending upon the temperature and the amount of heat required, the fuel gas may be burned with air, compressed air, or oxygen.
Brazing filler metal may be preplaced at the joint or fed from handheld filler metal.
Cleaning and fluxing are sometimes necessary.