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Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Body - Exterior> pro welders, I've got a challenge for you to firgure out
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Topic Review (Newest First)
01-14-2013 06:10 AM
deadbodyman I tried that (while welding) and it works once in a while about 2 out of 10 trys. its very hard to do...
I did try cutting some wire and welding it to the metal and this worked so before I go any farther I'll get my fulcrum puller finshed (homemade)and see if the wire will actually be strong enough to pull a dent...I'm also working on a stud holding attatchmant for the tip so I can weld studs on from my stud welder...This'll work well for the bigger dents...
01-13-2013 09:31 PM
Lonesome Lion This is not very elegant, but disconnect the ground clamp from the work piece. When you pull the trigger the wire spool will run without any current flowing to the work piece.
01-12-2013 05:12 AM
deadbodyman
Quote:
Originally Posted by slowrider16 View Post
could you not just cut a peice of wire to whatever length...or heck just get the studs that the stud gun uses...and weld it to the panel?
cut the wire and weld it to the panel???......now theres an idea and so simple,it just might work..mabee I've been over thinking this thing.
01-11-2013 09:17 PM
rafterg or buy the adapter for your mig that Eastwood sells, turns it into a stud gun
01-11-2013 01:55 PM
deadbodyman
Quote:
Originally Posted by nickleone View Post
That would be the next option, still might even be better than a stud welder because you dont need to grind but a tiny spot to weld a stud so you can look at how much your pulling through the shiny paint
01-11-2013 01:50 PM
deadbodyman
Quote:
Originally Posted by merced View Post
Hey,I think you may already have the tools to do what you want. Rather than cut the power to the voltage the way you are thinking add a auxiliary power switch to the wire feed motor.This should do the trick, but the question now is will the wire do the job. Great idea!
I'm sure it will, I even made a special leverage (Fulcrum) puller for it when I get it to work pretty cool in itself...

I'm thinking going to a thicker wire 035 may also increse my chances of success that thin wire burns up quick...you can also pull more with the thicker wire...
Anybody tried pulling the ground off to get the wire welded on yet???? its pretty tough...
01-11-2013 10:53 AM
nickleone look at this:
MIG Stud Welding Kit | Stud Welding | Welding Kit | Eastwood

Nick
01-11-2013 10:31 AM
slowrider16 could you not just cut a peice of wire to whatever length...or heck just get the studs that the stud gun uses...and weld it to the panel?
01-11-2013 07:10 AM
merced
test for challange

Hey,I think you may already have the tools to do what you want. Rather than cut the power to the voltage the way you are thinking add a auxiliary power switch to the wire feed motor.This should do the trick, but the question now is will the wire do the job. Great idea!
01-11-2013 06:32 AM
deadbodyman
Quote:
Originally Posted by Old Fool View Post
DBM - have you considered modifying the grounding tip on the stud welder? Braze a couple of tungsten points onto it that are 1/4" from our each side of the stud. Sharpen them to pin points. Hold the gun up against the panel and wiggle it a little and the pin points should cut thru the paint and find ground.
I havent thought of that (great idea) but what I did do with the stud welder was connect a ground clamp to the outer ring (like a mig grounded to the car) and short the tip so it didnt need to be pressed ,it welded as soon as it touched the steel (no spring pressure) That was one of my closely guarded secrets..Now the whole world knows and that feature will be out on the next model...
.but the whole point is to modify the mig so everyone can do it not just the lucky few with stud welders...Keeping in mind this is only for small dents...
01-11-2013 06:21 AM
deadbodyman
Quote:
Originally Posted by slufkin View Post
Have your buddy unplug the welder when you yell "NOW"
LOL,I did that the results were a complete failure ,even tried 1,2,3,GO... no luck,try it its hard as heck
01-11-2013 06:00 AM
Old Fool DBM - have you considered modifying the grounding tip on the stud welder? Braze a couple of tungsten points onto it that are 1/4" from our each side of the stud. Sharpen them to pin points. Hold the gun up against the panel and wiggle it a little and the pin points should cut thru the paint and find ground.
01-11-2013 01:14 AM
barry425
Wire is too thin

My advice is to spring for the stud welder. There is a reason that the pros use this. Besides, you can get one cheap from Harbor Freight. I got the 110 volt model and it works great. Also, if the dents aren't too bad, you can heat the dent with a torch and then apply a wet rag to the dent to shrink the metal. I think the wire from a MIG welder is too thin to be able to pull a dent. If you insist on doing this, keep pressure against the metal with the torch wire as you let go of the trigger, then remove the ground clamp and hit the trigger again to feed wire.
01-10-2013 10:14 PM
ogre i'm an electrician, not an electronics guy. i googled mig welder electrical diagram and came up with this schematic (page 36 on the manual pdf link). a magic board controls both the arc and the wire feed motor. the simple way would be to interrupt the ground with a relay and a foot pedal.

my way would be to use a relay and a timer: so that when you let of the trigger a timer would kick in for a determined time and power the feed rollers. set for a second and you would have a seconds worth of wire stuck in the puddle, set to zero and it would be a welder. use a time delay relay like
this no name timer this no name timer
for $20.

my bigger concern would be the amount of heat and puddle required to make enough puddle to stick the wire to it.

http://www.lincolnelectric.com/lincolnpowermig180.pdf

when i did automated welders we had timers for everything even a timer to reverse the wire feed to pull the wire back for the operator. but those were 600 amp continuous power supplies with separate wire feeds running 7/32 flux core wire at 1 ft per second. now that is some serious welding. 55 feet in 56 seconds to weld the backing plate bracket on a ford super duty axle.
01-10-2013 07:53 PM
25 Ford TT
welding body work studs

Simple fix....spend $19.00 at Eastwood.com and get their mig tip that is designed to weld on pull studs.....it spaces electrode from work and is cut out so that you'll be able to see what is happening. There is a tube that you load the stud into then pull the trigger....you'll see when to end the weld.
If you still feel the need to do it the hard way...? You'll have a great desigm to copy.
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