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Projects More unibody A coupe progress - welding up the seams.

Discussion in 'The Hokey Ass Message Board' started by Kevin Lee, Dec 10, 2008.

  1. Looks good Kevin. I'm jelous that you got to work on your coupe last night while I was out pushing f*$&ing snow!

    Mikethegreek
     
  2. Tuck
    Joined: May 14, 2001
    Posts: 5,873

    Tuck
    Tech Editor
    from MINNESOTA

    oh hell yes...
     
  3. Kevin Lee
    Joined: Nov 12, 2001
    Posts: 7,675

    Kevin Lee
    Super Moderator
    Staff Member

    Thanks for the good words everybody.

    Yeah, I was out in the garage until about 12:30 grinding and hammering. I seriously have some of the best neighbors in the world. They are generally up during the same hours and have told me that they like to look out the window and see the light on the shop. I will shut the door when I'm doing work like this past 9 or 10 o'clock – and you would have to be standing within a couple of car lengths from the door to really hear anything then.

    ***us - no problems with panels misaligning when you blast them? I had considered having the entire thing blasted after it was tacked together but was afraid of warping the panels at the edges. From here on out I will probably hit the edges of everything with that 3M disc.

    These welds have full penetration and look largely identical on the backside so i don't think another series of tacks would straighten it. Plus you would end up with a really thick area that would be hard to work I would think. The hammer and dolly went pretty quickly.

    The other side is already welded and needs a little more grinding to fully finish. Bottom patch panels go in tonight.
     
  4. Malcolm
    Joined: Feb 9, 2006
    Posts: 8,175

    Malcolm
    Member
    from Nebraska

    Looks great, Kevin. I like the no-nonsense approach.... (taking notes :))


    Malcolm
     
  5. JeffreyJames
    Joined: Jun 13, 2007
    Posts: 16,626

    JeffreyJames
    Member
    from SUGAR CITY

    Should have saved this for tech month Kev! Nice work.
     
  6. Kevin Lee
    Joined: Nov 12, 2001
    Posts: 7,675

    Kevin Lee
    Super Moderator
    Staff Member

    You kidding? It's always tech month. ;)
     
    Last edited: Dec 10, 2008
  7. Pinstriper40
    Joined: Sep 24, 2007
    Posts: 3,683

    Pinstriper40
    Member

    Very cool man- those flap discs really make life a treat, don't they?
     
  8. pan-dragger
    Joined: Sep 13, 2006
    Posts: 3,186

    pan-dragger
    Member

    looking good bud, nice work
     
  9. scootermcrad
    Joined: Sep 20, 2005
    Posts: 12,383

    scootermcrad
    Member

    Lookin' good Kevin! I know what you're going through right now! 27 hours of this over the weekend of this very process.

    Out of curiosity, do you have a shrinking disk? They help a ton to level things out, if you don't.
     
  10. Kevin Lee
    Joined: Nov 12, 2001
    Posts: 7,675

    Kevin Lee
    Super Moderator
    Staff Member

    No shrinking disc yet, but I can really see how one would help. I have a couple of little high spots so I'll definitely be working on them with a torch or disc. I'm thinking I'll go over all of the high spots once the bottom patch is in place tying the skin to the rail.
     
  11. James D
    Joined: Feb 8, 2007
    Posts: 4,967

    James D
    Member

    Great concept and great work.

    Any thoughts about flush mounting the doors, since you seem to have a salt flats kind of vibe? Did the old racers ever use that trick, or is it more a street rod thing?
     
  12. firemanjer
    Joined: Dec 11, 2007
    Posts: 90

    firemanjer
    Member
    from Colorado

    You're using a mig right? Did the weld crack with hammer and dolly? Mine crack. Is your heat turned up further than it would normally be for that thickness of metal?
     
  13. titus
    Joined: Dec 6, 2003
    Posts: 5,195

    titus
    Member

    Kevin, im just using a little mac tools spot blaster (the type with the small hopper on the top) with a smaller air compressor so theres not a ton of pressure, im just giving it a little dusting, not a mojor blasting, just to remove the loose crud and clean it up a little.

    i think a "real" sandblaster would really make a mess of it!

    you got lots of welding to do, its looking great and will pay off big when its done.

    jeff
     
  14. Just gotta look around and find a blaster that knows what they are doing. I am building my own unit for convenience and control of the process.
     
  15. Tuck
    Joined: May 14, 2001
    Posts: 5,873

    Tuck
    Tech Editor
    from MINNESOTA

    those small blasters that you get at northern tool etc... the pressurized propane tanks as I like to think of them... those are GREAT for blasting sheet like that.

    I cleaned my roadster quarters with mine... slow... you can adjust the pressure and blast at and angle and nothing moves around... it just takes a long time.

    They're pretty cheap. Hundred bucks I think...

    Tuck
     
  16. cleatus
    Joined: Mar 1, 2002
    Posts: 2,277

    cleatus
    Member
    from Sacramento

    I trick I learned is that instead of welding the entire length of the seam and THEN starting with the grinding/finishing, is to instead metal finish in sections as you go: weld a small section here & there, grind it flat, and while the metal is still hot - hammer & dolly. (Also, keep the hammer & dolly handy while you weld and correct anything that is not flat while it is still glowing). Then go back to welding another small section or two and repeat.
    The advantage is that you are metal finishing areas - as you go - around where you still need to weld and correcting the pucker as you go so that you are not adding weld bead to an area that has already drawn in. Also, since you are getting right to the hammer & dolly part while the metal is still good and hot from weld or grind, it takes very little effort with the hammer/dolly - just a slight suggestion of a tap - and the metal goes right into shape. Plus you are then not trying to hammer a seam flat that still has high spots from the partially dressed (& cold)bead.
    It may seem to be more work this way since you are jumping back & forth between processes, but if you correct the metal as you go, you save work in the long run.
    It helps because you can see and correct problems as they are just beginning, instead of compounding the problem as you continue to weld.
     
  17. rodknocker
    Joined: Jan 31, 2006
    Posts: 2,265

    rodknocker

    Kevin,after reading A LOT of your articles, how do you even begin to choose what car to build after seeing what you've seen?
     
  18. Different Kevin Lee
     
  19. Roothawg
    Joined: Mar 14, 2001
    Posts: 25,953

    Roothawg
    Member

    This one actually plays in a jug band out of KC. He's very famous in that arena.
     
  20. Kevin Lee
    Joined: Nov 12, 2001
    Posts: 7,675

    Kevin Lee
    Super Moderator
    Staff Member

    Yeah, I think you are thinking of the other Kevin Lee.
     
  21. NoSurf
    Joined: Jul 26, 2002
    Posts: 4,836

    NoSurf
    Member

    yeah- Kev's the one in the gl***es sitting:

    [​IMG]
     
  22. kevinc
    Joined: Jul 6, 2008
    Posts: 95

    kevinc
    Member
    from highland

    i like to use a similar method as cleatus when welding in patches, ill make some tacks and then bring em down with a 36 grit rolloc then a 50, and a cookie, and keep repeating this until the whole panel is done,then hit it with 80grit on a da, it seems that it doesnt distort as much as gringing the whole thing at once.This way to you can see better areas that need to be worked a little before you burn the rest of it in. as well as catch little problems before they get big.
     
  23. Really nice to see people like Kevin that actually give a **** what's under that filler and paint :cool: Props to you, sir.
     
  24. Midwest Rodder
    Joined: Dec 7, 2008
    Posts: 1,768

    Midwest Rodder
    Member

    Thats gonna look great when it is done.
     
  25. scootermcrad
    Joined: Sep 20, 2005
    Posts: 12,383

    scootermcrad
    Member

    This is basically the same process that works for me too. It especially helps when you have a panel that has a lot of shape. Losing control of the welded seem and the surrounding metal can be a disaster in no time if attention isn't given during the process.

    I had to remind myself of this just last night. I ended up having to undo some work I did because I lost control of a the surrounding metal. Thankfully metal is rarely ruined and can be worked back into shape. Getting better at it, but have had to learn the hard way on several occasions. :eek:
     

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