'Aluminium Heat Sink' is my first sculpture of 2019. Also my first in aluminium. I sum up the roadblocks that crossed my paths:
- There's no such thing a firing up the Tig and starting without preparation. ALU is a whole different ball game.
- Aluminium spreads heat as crazy: Your arms will cook fast, the workpiece tends to warp quickly and can even crack.
- Aluminium welding needs to be clean and secure: keep the arc small and tight. When you dip the puddle, switch immediately the tungsten.
-If you're workpiece never endured rough environments or the outdoors, you can do it without cleaning.
- If you want professional results. You need to clean al the workpieces. It avoids 'black pepper'.