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> 72 rustoration / subaru 6cyl project in Kansas, Mild resto-mod build, my idea of a “true” sportscar
Alain V.
post Jul 17 2022, 07:39 PM
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Well, after getting sidetracked by work and other projects for a while,,,,,,I finally got a chance to work on my tub a little today.
I chopped out a bad section of the pass rear floor and started trimming a patch panel from a replacement section.
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Alain V.
post Jul 17 2022, 07:40 PM
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sechszylinder
post Jul 18 2022, 07:45 AM
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QUOTE(Alain V. @ Jan 2 2022, 02:54 PM) *

“Flexible shape pattern” set onto the body with magnets so I can mark where I need to cut.

Hi Alain,

that really looks great !

Could you give a link to that particular youtube video ?

BR

Benno
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76-914
post Jul 19 2022, 07:46 AM
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Earlier I missed your comment on having pinholes galore. What worked for me was this: 1) very clean metal on both sides. If the metal is marginal your welds will be also. 2) The gap should be =/~ to the wire gage. Preferable .028. For me this was best achieved using a reciprocating body saw with a thin blade. 3) Cool each weld individually. I'm not sure why this works vs 3-4 welds then cooling but it did make a world of difference for eliminating pinholes in my experience. Oddly enough, when using this method, I could stack one weld on top of the other and a copper backing plate wasn't necessary. (IMG:style_emoticons/default/welder.gif) (IMG:style_emoticons/default/beerchug.gif)
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Alain V.
post Aug 28 2022, 08:43 PM
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QUOTE(sechszylinder @ Jul 18 2022, 08:45 AM) *

QUOTE(Alain V. @ Jan 2 2022, 02:54 PM) *

“Flexible shape pattern” set onto the body with magnets so I can mark where I need to cut.

Hi Alain,

that really looks great !

Could you give a link to that particular youtube video ?

BR

Benno

https://youtu.be/y-JQgPm4_7s
This should be the video
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Alain V.
post Aug 28 2022, 08:45 PM
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QUOTE(76-914 @ Jul 19 2022, 08:46 AM) *

Earlier I missed your comment on having pinholes galore. What worked for me was this: 1) very clean metal on both sides. If the metal is marginal your welds will be also. 2) The gap should be =/~ to the wire gage. Preferable .028. For me this was best achieved using a reciprocating body saw with a thin blade. 3) Cool each weld individually. I'm not sure why this works vs 3-4 welds then cooling but it did make a world of difference for eliminating pinholes in my experience. Oddly enough, when using this method, I could stack one weld on top of the other and a copper backing plate wasn't necessary. (IMG:style_emoticons/default/welder.gif) (IMG:style_emoticons/default/beerchug.gif)


Thanks for the tip. I’ll give this a try and see if it works better for me.
I’m hoping to have time to do a little welding on the tub next weekend.
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Alain V.
post Aug 28 2022, 08:50 PM
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Well, I decided the best way to get the rust out of some hard to reach areas at the rear firewall area was to do some blasting. Since I don’t have a smooth driveway, and my rotisserie is on hard wheels,,,,I decided to try and set up a makeshift “booth” area to do some blasting in. Time consuming, but it works and keeps the mess contained.

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Alain V.
post Aug 28 2022, 08:52 PM
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Was able to blast the area so I can treat it with epoxy primer, and get the spot ready for welding in a few patches.Attached Image
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Pezz
post Aug 29 2022, 06:59 AM
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Your clean workshop is dialed in and your work deserves the highest commendations. Way to go! Keep it up. Thanks for the postings and photos. (IMG:style_emoticons/default/beerchug.gif)
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76-914
post Aug 29 2022, 08:46 AM
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Perfect workshop! (IMG:style_emoticons/default/beerchug.gif)
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914GTSTI
post Aug 29 2022, 10:23 AM
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Soda blasting ?
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Alain V.
post Aug 29 2022, 05:25 PM
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QUOTE(914GTSTI @ Aug 29 2022, 11:23 AM) *

Soda blasting ?

Nah, I had some stubborn rust that I had a hard time trying to sand or wire brush, right where the rear firewall and long meet.....
So I modified my harbor freight pressure blaster with a larger hose and more professional type nozzle and am using the “black diamond” stuff from tractor supply. It works pretty good but I should have worn some type of full body suite, because it basically will coat you with black charcoal. I was smart enough to wear a respirator and full hood,,,,but I had short sleeves on and my arms looked like I had been rubbing charcoal all over them.
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Alain V.
post Oct 16 2022, 06:04 PM
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Well, I have made a little progress.
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Alain V.
post Oct 16 2022, 06:05 PM
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Alain V.
post Oct 16 2022, 06:09 PM
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Alain V.
post Oct 16 2022, 06:10 PM
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tygaboy
post Oct 17 2022, 08:40 AM
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That's a nice, tidy repair! You're doing great work. (IMG:style_emoticons/default/smilie_pokal.gif)
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Alain V.
post Nov 7 2022, 06:52 PM
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I bought a used spot welder on Facebook marketplace last week.
It has adjustable temp and time settings.
Paid $250 for it, but it feels like a much more heavy duty machine than the ones available at harbor freight.

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Alain V.
post Nov 7 2022, 06:54 PM
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I did a little “testing” to figure out where to set the machine for 2 pieces of 18gage metal.
Then pulled the pieces apart to check for weld penetration.
Seems to work good.
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Alain V.
post Nov 7 2022, 06:56 PM
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I used it where the rear floor pan meets the lower firewall.

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