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Posted 11/1/2007 8:15:59 PM


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thanks Shagg...hope all is well with you and your new wife. Startin to get in the 40's round these parts but the welding practice keeps me warm. Hope you too are tinkering with your projects. Yes the weld amprage was high. I spoke to a guy at the local weld shop about the need for good penetration. The tubing I'm using is .095 wall thickness and when notched the edges thin out. This is where I burnt the most holes. I'm thinking I should tack those areas and start on the thicker part of the tube.

the higher amprage should be high enough to penetrate well but not burn through. I still have to experiment with amps cause when I've tried to go to low the tack breaks off pretty easily. normal? i guess tacks are not intended to be super solid, just enough to hold for main welding.  just typing this now is making want to stop typing and get to it. so i'll do that.


...does it come in black?

Post #64243
Posted 11/1/2007 10:30:07 PM


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Last Login: 1/31/2018 6:45:58 AM
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3 musketeers, essential welding supplies

are you grinding a bevel around the end of the pipe your welding? That helps ensure you get good penetration and that may help with the trouble your having on  the thin edges of your notches.

I wish I could show your stuff to my pro welder friend but he doesn't live near me nor does he have internet. I was haveing trouble with my welding and he fixed my problem just over the phone. I need to call him soon, I can see if he has any suggetions If you want.

"there ain't no bat!"

Post #64245
Posted 11/2/2007 8:03:22 AM


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Yeah, I've been doing alot to my 1/6 batmobile lately, The engine my wife built cranked this past weekend, im going to put it thru a heat tomorrow and do minor adjustments for her.  I'll ask my dad about those tack welds (since he's certified and im not lol) It doesnt seem that they should break off that easily, when i was learning how to weld, i was putting a roll cage in a 1972 camaro (then gave the car away i might add ), but i did more tack welds than actual complete welds.   All the tack welds i did held up, tho most of them blew straight thru (too much on the amp's).  But yeah, like i said, i'll ask him IF i see him this weekend.

“It’s not who I am underneath, but what I do that defines me”
Post #64247
Posted 11/2/2007 7:23:51 PM


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Thanks guys...

bean...do you mean bevel the end of the tube so it lies more flush on the bottom piece? maybe grinding those thin sharp pieces down? sounds good. to bad i'm outta tube scraps...gotta get more Monday.

shagg...did you use a stick for the tacking you donedid? Nice to hear the newlyweds are tinkering!

it's wifey's birthday today so it's off to dinner...


...does it come in black?

Post #64260
Posted 11/2/2007 8:17:21 PM


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Tell your wife happy birlthday!

Yea, just grind a 45deg angle around the end of your tubes.

this page has an illustration of a bevel

http://www.weldbend.com/Technical%20Data/Bevel%20Information/bevelinfo.htm

and this page shows several bevel types

http://www.unified-eng.com/scitech/weld/groove.html

I couldn't find any pictures or real pipe but if you look back through BWD's build you can see what I'm talking about. I think he even explains it somewhere in the thread.

"there ain't no bat!"

Post #64263
Posted 11/5/2007 10:00:02 AM


Getting Better at Internets

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Yeah i used a stick to do all my tack welds, at the time (well now that i think of it, even to today) i couldn't weld a roll cage adequately, had to let my dad do all that, but i did do all the beveling, measuring, cutting and tack welds.  my dad just finished the welds on around for me .   Here are some pics of that car and roll cage (pointless i know, i wish i had some close ups of the welds themselves)

^ Thats my dad finishin up the welds that i tack welded in for him.

Thats the paint job on the passenger side before i finished it

The driver side finished.   And to think, i GAVE this car away  

“It’s not who I am underneath, but what I do that defines me”

Post #64291
Posted 11/5/2007 12:54:18 PM


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Cool pics! will continue practicing with the stick...I'm finding that the right electrodes are the key to strong bonds. When i use 6013 sticks, the tacks are easy to crack or break. When I use 6011, at the same amperage, the tack is stronger as is the weld. 6011's arent pretty and cause lots of spatter, but the welds are strong.
thanks for the pics! next time you want to give away a camaro, call me.





...does it come in black?

Post #64293
Posted 11/5/2007 11:06:12 PM


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Last Login: 11/25/2017 7:30:02 AM
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I have own a MIG welder for about four years now and use it all the time. Whenever I come across a bad weld where I don't have enough penetration I check my ground first. 95% of the time it's due to the clamp being dirty and not making good contact or a shaty outlet. Try to make sure the ground is good and it will help your welding dramatically.
Post #64309
Posted 11/6/2007 1:59:37 PM


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thanks link...i will check that out. there were a couple of incidents where I wasn't getting an arc after a few strikes...reseting my grounding clamp fixed that.

aggressively looking for a well priced Hobart H187




...does it come in black?

Post #64312
Posted 11/8/2007 4:27:19 PM


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Last Login: 11/25/2017 7:30:02 AM
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Is there other reasons the might hold you back from getting a TIG besides for maybe money? Yeah is harder then MIG but it is a lot more cleaner and better quality.
Post #64344
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