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Technical Question about Media Blasting

Discussion in 'Traditional Hot Rods' started by Kbabcock, Apr 12, 2017.

  1. Kbabcock
    Joined: Apr 12, 2017
    Posts: 4

    Kbabcock

    Hello all, just joined today to ask about blasting. It's probably a dumb question, but this is my first project car.

    I'll be taking it in a couple of weeks to get media blasted (garnet). The car was yellow and I'm having it stripped to eventually paint it silver. I'm in the process of stripping the car down, but someone suggested that I might be able to NOT remove the door windows, and just roll them down instead. I'm not overly concerne with blasting the insides of the doors or the inner door skin that will get covered anyway by panels. But I know the blasting will have to hit the areas that but against the window channels, so anyway what do you guys think?
     
  2. Leaving the glass in would be a huge mistake,every thing needs to be removed. HRP

    [​IMG]
     
    FatDave, Kan Kustom, dwollam and 2 others like this.
  3. Dino 64
    Joined: Jul 13, 2012
    Posts: 2,501

    Dino 64
    Member
    from Virginia

    It would be helpful to tell us what you're working on. In general the quality of the result depends on who's blasting. Many of us have had bad experiences with warped panels from an inexperienced operator. To your question, I would take out the windows to be safe. Better than replacing them. If your car is newer than mid sixties, you won't get much response here.


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    demmals7ytriht likes this.
  4. squirrel
    Joined: Sep 23, 2004
    Posts: 58,524

    squirrel
    ALLIANCE MEMBER

    Plastic media might be ok to leave the glass in...garnet will destroy it.
     
    Kan Kustom and HOTRODPRIMER like this.
  5. Kbabcock
    Joined: Apr 12, 2017
    Posts: 4

    Kbabcock

    Got it...glass comes out. Thanks! And it's a 66 'Dart
     
  6. You meant to say 65' Dart right?
     
    kmrumedy, clunker, wraymen and 2 others like this.
  7. rottenleonard
    Joined: Nov 7, 2008
    Posts: 1,996

    rottenleonard
    Member

    if i Wasn't feeling lazy i would run out and take a picture of my 55 chevy Wagon, they blasted it with the windows down and the trim holes open. Made a real neat pattern of circles on the glass:p
     
  8. squirrel
    Joined: Sep 23, 2004
    Posts: 58,524

    squirrel
    ALLIANCE MEMBER

    also make sure to remove the window regulators, latches, etc. Sand is hard on moving parts.
     
    Kan Kustom likes this.
  9. thirtytwo
    Joined: Dec 19, 2003
    Posts: 2,636

    thirtytwo
    Member

    I think I would remove the paint on all the flat panels on a newer car like that with a hamburger wheel and a D/A and just use blasting for the jambs and other difficult areas to get at
     
  10. Kbabcock
    Joined: Apr 12, 2017
    Posts: 4

    Kbabcock

    I thought about that but I've read that a da and paint stripping wheel can warp panels, so I didn't want to take the chance. Plus I would have to do it over the course of a couple of weeks and it would flash rust before I was done with it
     
  11. Kbabcock
    Joined: Apr 12, 2017
    Posts: 4

    Kbabcock

    I do like the front end of a 65 more, but that's life
     
  12. squirrel
    Joined: Sep 23, 2004
    Posts: 58,524

    squirrel
    ALLIANCE MEMBER

    ....something about the forum rules.....
     
  13. JOECOOL
    Joined: Jan 13, 2004
    Posts: 2,769

    JOECOOL
    Member

    Blasting is never my first choice.It always seems to create more work. I just take the out side paint off with an abrasive disc " DA" and then if its really rusty use a small blaster on the rust only .Trying to get all the abrasive out of the cranies is really bad when you get ready to paint or primer and it flys out all over the wet paint. Just my opinion I am usually wrong.
     
    Jeremy Morrison and Texas Webb like this.
  14. thirtytwo
    Joined: Dec 19, 2003
    Posts: 2,636

    thirtytwo
    Member

    If you think a D/A will warp the metal you have, blasting will absolutely destroy it! Really the worry with sanding/ grinding is being to aggressive on body lines and reveals , 80 grit may not seem aggressive but hold it wrong or long enough on a body line and it will round corners and make it less crisp

    You can strip with paint stripper too

    Do one panel at a time and follow it with metal prep when done or just epoxy that panel
     
  15. squirrel
    Joined: Sep 23, 2004
    Posts: 58,524

    squirrel
    ALLIANCE MEMBER

    I usually end up using several different paint removal processes on each car. Blast the areas that need it, generally where it's rusty, or where the contours make it the easiest method. I use stripper where it's the quickest way to get the paint off, usually when the paint is thick. And I sand it where it will get the job done quickly, such as flatter areas with a thin coat of paint.
     
  16. Bandit Billy
    Joined: Sep 16, 2014
    Posts: 14,256

    Bandit Billy
    ALLIANCE MEMBER

    I saw the thread title and though this was about fake news. :rolleyes: Get it, Media Blasting...tough crowd!

    I bought a Eastwood soda blaster and have had limited success with it. I have not tried it but they claim soda will not harm glass or chrome and the soda is easy on the environment they claim. Doesn't do a darn on rust but if you can keep your air delivery bone dry, and I mean Saharan, it does strip paint without damaging the metal.
     
    Wooster likes this.
  17. DDDenny
    Joined: Feb 6, 2015
    Posts: 21,032

    DDDenny
    Member
    from oregon

    Considering this is your first time I'd suggest asking the blaster if he will be responsible for any warped panels and get it in writing. I know, but at least ask.
    Ask me how I know!
    After the car is blasted there will be sand in nooks and crannies EVERYWHERE.
    After you've blown everything out three times, do it three more times, you will find more.
     
  18. Bandit Billy
    Joined: Sep 16, 2014
    Posts: 14,256

    Bandit Billy
    ALLIANCE MEMBER

    I have no experience with this method but it looks cool, like to try it on the next car.
     
    demmals7ytriht likes this.
  19. butchcoat1969
    Joined: Apr 1, 2017
    Posts: 165

    butchcoat1969

    It depends how fast and how much u want to wait and spend imo blasting gets the job done cost more and clean up is a beast to get rid of, sanding will be cheaper but take longer and u still have clean up not as bad plus blasting will show u bad areas that sanding may not so just something's I've run into when doing mine and my buddies cars, GL


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  20. southcross2631
    Joined: Jan 20, 2013
    Posts: 4,412

    southcross2631
    Member

    Had a truck Dustless blasted. The process did not warp the panels. Remove the windows and the chrome. Be prepared to find blasting materials in every crack and hole in the car. Did a good job.
    Cost $ 700.00 and he came to my shop. He let me try it out and it was pretty slick. Just used aircraft stripper and a wire wheel on my latest project. 20170330_1512081 (1).jpg
     
  21. theHIGHLANDER
    Joined: Jun 3, 2005
    Posts: 10,437

    theHIGHLANDER
    Member

    Is the paint really bad? Cracked and peeling, rust under it? If not you have some nice yellow "primer" that's been there for who knows how long, yes? Get a flat sander going and block what you have, sealit and go for the finish. Imagine how many hours of filling and blocking will reveal itself as you level it out. Some stuff, blasting is the only way. I have jobs out there that were not stripped to bare metal and holding a show quality finish for 20+ years. Here's one that was done 17 years ago and she drives the shit out of it. Sorry for the phone pic...
    [​IMG]
     
  22. Schwanke Engines
    Joined: Jun 12, 2014
    Posts: 777

    Schwanke Engines
    Member

    Remove everything, be prepared to be finding little piles of media coming from various holes everywhere for months after getting it done. But it is probably the quickest method of stripping anything down. That being said we dont like to do it much because of the mess on bodies. But do every Frame we build.
     
  23. Kan Kustom
    Joined: Jul 20, 2009
    Posts: 2,742

    Kan Kustom
    Member

    Listen to Highlander.
     
  24. 39cdan
    Joined: May 11, 2016
    Posts: 41

    39cdan

  25. john worden
    Joined: Nov 14, 2007
    Posts: 1,834

    john worden
    Member
    from iowa

    It is important to remember that with ANY type of blasting the REMOVED material is also mixed with the media and can do damage even though the media alone may not.
     
  26. cretin
    Joined: Oct 10, 2006
    Posts: 3,068

    cretin
    Member

    I personally like acid dipping. I dipped all the removable panels for my '54, but I blasted the body because we have a good blaster and it was more cost effective then dipping the body. He switched media from sand to plastic when blasting certain areas to make sure panels aren't damaged. But I only did all that because I was going to do a lot of sheetmetal work, if I was just going for a repaint I would listen to @theHIGHLANDER . Just like with anything else, if you choose a knowledgable place, you'll get a quality job. Someone may be able to refer a trusted blaster if you tell us your location. Then you can call the blaster and let them tell you to take the glass out.

    And by the way, DA's and paint stripper is not going to warp a panel. If you were sanding a panel, you just have to not get it hot to not warp, and as suggested above, make sure you aren't sanding out body lines, or removing any parent material for that matter.
     
    FatDave likes this.
  27. FatDave
    Joined: Feb 7, 2009
    Posts: 78

    FatDave
    Member

    That glass will be destroyed if you leave it in.

    I'm not the hugest fan of blasting panels at all. The bigger surface areas can't handle it. Save that for things like steel wheels, motor mounts, and other structural stuff.

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    MrPhat40 likes this.
  28. Onemansjunk
    Joined: Nov 30, 2008
    Posts: 396

    Onemansjunk
    Member
    from Modesto,CA

  29. Tobywan
    Joined: May 18, 2009
    Posts: 18

    Tobywan
    Member

    Dipping the body is the way to go. I use to do wet blasting with great results but you cant get everywhere the dipping gets to.

    Sent from my SPH-L720T using The H.A.M.B. mobile app
     
  30. 5tyOne
    Joined: Oct 17, 2016
    Posts: 10

    5tyOne

    I was thinking that on my 51..... Original factory paint and paint job #2 Have been there for 65, 35 years and holding up minus rust areas and dents. Body guy is starting with dents and rust but thinks rest is in good enough shape to block, seal and prime for more blocking....if it ain't broken don't strip it?

    Sent from my SAMSUNG-SM-G935A using The H.A.M.B. mobile app
     

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