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Old 01-02-2010, 05:06 AM   #1186
tmgs
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nice thread

I'm headed out myself o get my 1st tig welder, I have been looking pretty seriously for a good used machine for some time

I think i found one, I had narrowed my searches to the syncrowaves, or dynasty (yea sure they are pricey and out of my range even used) or the Precision TIG 275, tere have only been a couple very old licoln 300's I have seen, but I don't want that old.

found a Syncrowave 351 complete setup to go look at today. hopefully it works out ok!
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Old 01-05-2010, 09:08 AM   #1187
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What do you guys weld on?

I plan to get some heat tiles, but what can I weld on with a torch in the mean time?

I know concrete is a big nono.




Also, for my first big project I plan to make a colapsable welding table.

What kind of steel should I used?

I've got some practice with torch welding, but I don't know anything about steel types or which ones can be welded together and what kind of filler rod to use.
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Old 01-06-2010, 05:00 AM   #1188
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Quote:
Originally Posted by tmgs
I'm headed out myself o get my 1st tig welder, I have been looking pretty seriously for a good used machine for some time

I think i found one, I had narrowed my searches to the syncrowaves, or dynasty (yea sure they are pricey and out of my range even used) or the Precision TIG 275, tere have only been a couple very old licoln 300's I have seen, but I don't want that old.

found a Syncrowave 351 complete setup to go look at today. hopefully it works out ok!
well, I have it, it's on the trailer still, but it is here. Picked up an Argon tank a couple days ago too. now to get it off the trailer and hooked up and use it, what was cool is, a friend here (Ethan) went along to look the machine over with me and try it out.

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Old 01-06-2010, 07:19 AM   #1189
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Nice pickup..you will like the way it welds aluminum.
I have used them all at one time or another. The very best is of course the OLD miller Gold Stars with the selenium rectifiers (yes I still have one )

But I also have a ton of time under the hood with the old Lincoln heliarc welders and like them also.
The great thing about the square wave machines is when welding larger pieces of aluminum. The added DC really make them fast. I just don't like the noise.

Quote:
What do you guys weld on?
EvilGenius,
It really depends on how big of a project you are welding on. But you will end up with a steel table once you get more time under the hood.
Gary
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Old 01-06-2010, 09:54 AM   #1190
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Quote:
Originally Posted by EvilGenius
What do you guys weld on?
Metal, mostly, although some people claim to be able to weld plastic.

I saw, once, maybe on tv- some guy got two pieces of metal to stick together, but he didn't use any glue. Any ideas on how to do this?
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Old 01-06-2010, 11:02 AM   #1191
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I mean like what do you sit your metal on when you weld it.
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Old 01-06-2010, 01:18 PM   #1192
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Quote:
Originally Posted by tundrawolf
I saw, once, maybe on tv- some guy got two pieces of metal to stick together, but he didn't use any glue. Any ideas on how to do this?
They're called "Magnets" and they are magic.

You can diffusion bond metals together as well. Good clean surfaces, good pressure holding them together, then add a little heat. Usually happens by mistake to things like brake bleed screws, bushings.

Precision ground surfaces with no oil on them are exceeedingly difficult to separate. Just ask the guy here at work who messed up a set of gage blocks about that.
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Old 01-06-2010, 02:58 PM   #1193
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Quote:
Originally Posted by Gas Hog
Nice pickup..you will like the way it welds aluminum.
I have used them all at one time or another. The very best is of course the OLD miller Gold Stars with the selenium rectifiers (yes I still have one )

But I also have a ton of time under the hood with the old Lincoln heliarc welders and like them also.
The great thing about the square wave machines is when welding larger pieces of aluminum. The added DC really make them fast. I just don't like the noise.

Gary
Thanks, can't wait to hook it up, got busy and have not put in the new box, i looked for a plug so I did not have to hard wire and the only ones I found were about 300 bucks (ouch) so I tried to go with the 100 amp stage [pin, but no one had them in stock in all of Atlanta!

Tom
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Old 01-06-2010, 03:03 PM   #1194
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Quote:
Originally Posted by EvilGenius
I mean like what do you sit your metal on when you weld it.
First, a piece of 1/4" Hot rolled plate set on top of my wood workbench (or on top of a couple of sawhorses).

Later I built a small table (first real project- 2' x 3'), and then bought one from a guy (4' x 4' and cheaper than the cost of materials).

I may have suggested this earlier, but head over to the hobart welding board. Lots of ideas, and lots of advice over there- http://www.hobartwelders.com/weldtalk/
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Old 01-06-2010, 06:40 PM   #1195
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tmgs, I have that exact same welder. Been using it for many many years. A base model 351 with no upgrades. Heavy sucker eh?

No problems at all except it's hesitant at times with hf starts. This trait seems somewhat common on blue machines.

I use a momentary switch on the torch 95% of the time and a pedal when welding alum etc.
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Old 01-06-2010, 07:23 PM   #1196
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I have a full system from HPE Exhaust. It is made from Inconel and or Inox.

How is this stuff welded?
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Old 01-06-2010, 10:35 PM   #1197
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Quote:
Originally Posted by EvilGenius
I mean like what do you sit your metal on when you weld it.
Metal table (you can use wood or concrete but not plastic) or just use a vice. the thicker the top the better, one of mine is 3 x 4 x the other is 1 x 4 x 1

Here is a picture of my dads it is about 4 x 6 x 2



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Old 01-07-2010, 10:12 AM   #1198
WIsixfitty
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Quote:
Originally Posted by omnivore
I have a full system from HPE Exhaust. It is made from Inconel and or Inox.

How is this stuff welded?
you'll need inconel filler and keep as much O2 away as possible. iirc it welds like Ti which is'nt bad as long....
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Old 01-07-2010, 10:57 AM   #1199
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Quote:
Originally Posted by grizzzly
Metal table (you can use wood or concrete but not plastic) or just use a vice. the thicker the top the better, one of mine is 3 x 4 x the other is 1 x 4 x 1

Here is a picture of my dads it is about 4 x 6 x 2



Awesome.

Where did he get that vice?
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Old 01-07-2010, 02:31 PM   #1200
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Storing MIG wire

I finally used up the spool of flux core wire that came with my Hobart 140 so today I bought a tank of C25 and an 11 lb spool of solid wire. I don't know what possessed me to buy that much instead of a 2 lb spool since I just putz around the garage and go months between welding so 11 lbs will last me quite a few years. What's the best way to store the wire to keep it from oxidizing between uses? The guy at the welding supply place suggested hosing it down with something like WD40, but that seems like it'd only contaminate the wire. I'm thinking of removing the spool and sealing it up with a little bag of dessicant using the "Seal a Meal" vacuum bagger my wife has in the kitchen.

EDIT: I just came up from the shop where I laid down my first ever beads using shielding gas. Holy shit! I knew there'd be an improvement over flux core, but DAMN. I'm kicking myself for waiting.

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