In MIG welding (which uses a wire instead of a stick) you just press a
button and the welder plays out the wire at a preset rate. As the wire
approaches the work piece it automatically arcs and melts into the
piece. That allows you to concentrate on moving the gun along at a
proper rate to weld the seam. MIG welders also allow gas to be used
which significantly reduces smoke/soot and creates a better weld.
Frank P.
Kurt (welding is fun)G
Sent from my iPad
The MIG can also weld aluminium and stainless steel (with pure argon gas, and apparently aluminium is a REAL challenge due to its low melt temperature). You can get aluminium sticks for the ARC, I bought some, and was then too scared to use them after I read the cancerous warning label....
Ben
They've already got most of it covered, but one important thing is no matter what kind of welding you do, make sure you have plenty of ventilation. Open the garage door a foot or so should be plenty, but welding gasses of any sort are not something you want to breathe much of. With stick you'll also need a few more tools--the flux makes a thick layer of slag on the weld, which you'll need to break off before painting or anything. They make slag hammers for this, and I'm sure the people with more experience at this than me will tell you half a dozen other things that would be useful for you to have. -- You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to rctank...@googlegroups.com
If the electrode (stick) is small enough you twist it and try to break
it off. If not, you turn off the welder and pry it off or snap it off
using pliers. NOTE: Don't use pliers while the welder is on ... unless
you want the pliers to be welded to the part!!
> Thanks fellas . Im still wondering why this stick welder has a dial with
> 0-240v on it ?
> and the dial that says 140 mix>min has no calibrations, just an arrow.
The 140 dial regulates the current flow and the 0-240v regulates the
voltage. You need higher current for larger parts (or parts that
conduct heat well). Different voltage settings are used for different
materials. Any welding book (or web site) will have a welding
"schedule" that tells you the preferred current setting, voltage
setting, electrode type, electrode size, gas and feed rate (for MIG
welders) for a given material, thickness and type of weld (butt, outside
corner, inside corner, etc).
Frank P.
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Have you thought about a solar powered auto-varioshade welding helmet,they are about £50,but excellent for a novice. keith | |||
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