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Message
SPF sunblock 45 lotion will save your skin on those
hot days when a long sleeved shirt is out of the question.
That's good
to know. I've joked about welding being a winter sport here in
Florida :-)
For aluminum, use a pure tungsten electrode (green
stripe) that is sized for the increased amperage needed. Use a larger diameter
ceramic cup and increase argon flow. What machine and torch are you
using?
So far, I've
only used the red stripe, thoriated tungstens. I've got a
good "calculator" that came from Miller, that shows the size of the
tungsten, and cup, and also the flow rate for different thicknesses,
and types of joints.
The machine
is a Miller Dynasty 200DX, which is an AC/DC inverter type machine. The
torch is an air cooled "17", which will be my amperage
limitation.
A 400 degree preheat will help on large pieces or
if you're down on amperage.
Thanks for
the tip.
Rusty
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