tips mig welding

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s14boy
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tips mig welding

Post by s14boy » Thu Mar 22, 2012 9:25 pm

tips on mig welding my s13 fire wall im using a lincoln 125. any tips will be greatly apreciated

thanks

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supakat
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Post by supakat » Fri Mar 23, 2012 3:53 am

Pulse weld.
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Post by Charlie240sxt » Sat Mar 24, 2012 8:45 pm

Are you stitch welding it or what? describe what your doing alittle more
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s14boy
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Post by s14boy » Wed Mar 28, 2012 10:14 pm

rhd swap so welding the whole thing

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Post by beercandrifter » Thu Mar 29, 2012 3:57 am

circles, pull towards. worked fine when I welded my unibody back together after cutting the rear fenders. make sure you are getting decent penetration with the welds, the firewall is a bit thicker than what I was working on.
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s14boy
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Post by s14boy » Thu Mar 29, 2012 9:39 am

ya im planing on getting the settings dialed in on the old fire wall then weld the new one in

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Post by nismoautoxr » Thu Mar 29, 2012 11:46 am

#1 tip !!! Remove anything that you can catch on fire inside the car if you have not already . Cover all of the glass that is anywhere near because it will be permanantly damaged if weld spatter hits it . Using a flux core wire is going to be messy . It will be best if your welder uses shielding gas (75/25)argon/co2.
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Post by 95silvia14 » Fri Mar 30, 2012 4:57 pm

deffinitly use shielding gas if your model has that option i dont like doing anykind of welding with flux core. gas or no go but at the same time i prefer to tig stuff as long as its not body panels
momma always told me go big or go home and going home is not a f**kin option

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Post by s14boy » Fri Mar 30, 2012 9:48 pm

i dont have the option to usegas just the flux core :(

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Post by 95silvia14 » Sat Mar 31, 2012 4:46 am

in that case just practice on scrap make sure the weld area is well perpared and move around to try and keep down any warping
momma always told me go big or go home and going home is not a f**kin option

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Post by s14boy » Sat Mar 31, 2012 8:50 pm

thanks for the tips guys im going to be welding it sometime this week ill let you all know how it turns out

project-c2
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Post by project-c2 » Sat Mar 31, 2012 10:37 pm

I found stitch welding works better on sheet metal. Otherwise, you blow a hole through it. Or weaving in short sections. Let it cool then proceed.

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Post by 95silvia14 » Wed May 02, 2012 7:41 pm

yea i usually stich weld when im doing body work also ends up looking better in the long run also
momma always told me go big or go home and going home is not a f**kin option

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mattheripper
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Post by mattheripper » Wed May 02, 2012 10:34 pm

I pull back and use my left hand for extra steadyings ;)

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Walperstyle
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Post by Walperstyle » Sat May 05, 2012 1:13 pm

rhd swap? I never figured out why people do this. You can import cars that are 25 years old in the US. It would have been cheaper to get everything from an 88 silvia.

Its also dangerous to drive on public roads on the wrong side of the car. Example, passing on single lane mtn roads.

Up here we have a lot of imported JDM cars, its really not all that safe.
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Post by TinyT » Sat May 05, 2012 5:49 pm

clean the surface with soy sauce cuz this **** is gonna be jdm as a **** all sitting on the right side and ****.
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Post by nismoautoxr » Sat May 05, 2012 7:41 pm

damn what rock did TT climb out from underLOL
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Post by B-Well » Sat Jun 23, 2012 6:30 am

sheet metal is tricky to weld. if you just go to town on it, it will warp like bacon. you must weld in sections like this (all welds start on the same side, all left to right) Weld all the 1s first. (2-4 inches long) then weld all the 2s and so forth

| 1 | 4 | 3 | 2 | 1 | 4 | 3 | 2 | 1 | 4 | 3 | 2 | 1 | 4 | 3 | 2 | 1 | 4 | 3 |

you need to do a few tests on scraps the same thickness you are welding and the same connection.

welding vertical is a whole different beast as well, this alone takes a long time to master.

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Post by RunninMeBrokeS13 » Mon Oct 15, 2012 5:03 pm

stitch weld it take your time jump around dont get your panties in a bunch if you blow a hole in it move on and save it for later.
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Post by s13halfs15 » Tue Oct 16, 2012 12:15 pm

get a 1/2 round copper pipe that about 6in long flaten 2in of it to use as a back on the holes you blow throw this help fill them, and wont stick to the welds. as for welding fire wall i wouldnt use a flex core welder you will have more problems then anything with heat, and weak spots in the fire wall.
There a reason there not stich welded on you dont want to over strenghen or weaken the wall do to safty. If you are going to do it find all the spot welds drill them out on the car and for the doner clip grind the spot welds off on the side of metal your not useing. that way you have to only spot weld the same spots and makes clean. also make sure to prefit every thing before you weld because when you weld, and something off your cutting, and will be more of a pain then worth.
Last you need some seem sealer, and make sure to use welding primer so you dont have rust problems later.

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Post by s14boy » Fri Nov 09, 2012 11:44 pm

thanks guys i wish ka-t had the multiquote function like zilvia. or maybe it does and im just not on here enough. but i finished the welding im off at school right now so i cant get pictures but ill post what i have. first time welding so it was interesting and i did blow holes it that thing a few times. that was very frustrating but i jst left it and came back later when i want pissed at it lol. picture time. and it should be running the 16-25 when im home for thanks giving :)

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how its sitting right now. i wana drive it so bad
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yep good old ka! :)
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and does any one have advise for that ***** dent in the fire wall gutter. guy i bought it from "forgot to tell me about it" i was pissed lol. but you dont notice it really but i deffinatly am gona fix it and would like your thoughts.

thanks guys!

s13halfs15
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Post by s13halfs15 » Sun Nov 11, 2012 6:39 pm


s14boy
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Post by s14boy » Mon Nov 12, 2012 2:55 pm

ill give that a try in about a month when im on winter break and let every one know. its just a very odd spot and has any one tried pushing with that tool instead of pulling. in essence it should work as long as you keep it straight.

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Re: tips mig welding

Post by starclassic03 » Sat Dec 14, 2013 1:59 pm

I didn't noticed if anyone mentioned wire size. The mig machines usually come with .030 core wire, but you can get it as small as 0.023 or so. It makes a huge difference using the smaller core wire on sheet metal. You can run lower machine setting and run longer beads without blowing through.

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