Page 1 of 2 12 LastLast
Results 1 to 10 of 17

Thread: Sand blasting aluminium.

  1. #1
    Join Date
    Aug 2020
    Location
    Victoria Australia
    Posts
    11
    Total Downloaded
    0

    Sand blasting aluminium.

    Hi Folks,
    Time to paint the hard roof of my Series 2A. I see that it is far from smooth with three main ribs and lots of little corners, edges and indentations. Does anybody know what the best way to get the old paint off? Is it safe to get the aluminium roof sand blasted?
    Thanks for all ideas and info .

  2. #2
    Join Date
    Apr 2008
    Location
    Dayboro, Qld
    Posts
    2,890
    Total Downloaded
    0
    I used paint stripper and a wire wheel attachment on a grinder when I stripped my roof for painting. Aluminium can distort when sandblasted, I had some floor panels done which weren't very successful
    Attached Images Attached Images

  3. #3
    Join Date
    Jan 1970
    Location
    Narre Warren South
    Posts
    6,315
    Total Downloaded
    0
    Quote Originally Posted by danniboy View Post
    Hi Folks,
    Time to paint the hard roof of my Series 2A. I see that it is far from smooth with three main ribs and lots of little corners, edges and indentations. Does anybody know what the best way to get the old paint off? Is it safe to get the aluminium roof sand blasted?
    Thanks for all ideas and info .
    Depends what you mean by 'sand blasting'.
    Different media can be used (not sand). Most abrasive blasting companies would use a fairly aggressive media so you'd probably be better off with soda blasting.
    I've recently stripped part of a roof using paint stripper.
    Walter the Dormobile
    Wasn't fast but reasonably mess free as it was done in a garage.

    Colin
    '56 Series 1 with homemade welder
    '65 Series IIa Dormobile
    '70 SIIa GS
    '76 SIII 88" (Isuzu C240)
    '81 SIII FFR
    '95 Defender Tanami
    '58 Series II (sold)
    Motorcycles :-
    Vincent Rapide, Panther M100, Norton BIG4, Electra & Navigator, Matchless G80C

  4. #4
    Join Date
    Sep 2012
    Location
    Westlake ,brisbane
    Posts
    3,922
    Total Downloaded
    0
    I had all the panels of my 80" glass blasted but the guy I had do it really knew what he was doing. I believe Soder blasting is a lot gentler. I did strip a bonnet for one of my other S1 80's using paint stripper but problems with stripper that had got under the rivet heads causing the paint around the rivets to start to peal after a couple of months being in the sun. I had the bonnet glass blasted then water blasted before re painting.

  5. #5
    Join Date
    Mar 2012
    Location
    Melbourne
    Posts
    260
    Total Downloaded
    0
    Soda blasting is excellent for aluminium (and fibreglass). Senko Abrasive Blasting in Brendale might be worth a try.

  6. #6
    Join Date
    Sep 2012
    Location
    Westlake ,brisbane
    Posts
    3,922
    Total Downloaded
    0
    If you go down the road of using paint stripper, make sure the one you use is aluminium friendly, I had one once that attacked the aluminium, it can also cause a lot of heat causing thin panels to buckle.

  7. #7
    Join Date
    Sep 2010
    Location
    The Hills.
    Posts
    15,795
    Total Downloaded
    0
    Throw my two bob's worth in here. I discussed having the shell of my FIAT blasted. I was advised that "sand" blasting would probably destroy it, and it ain't aluminium. Media such as garnet or walnut shell were also too aggressive according to the firm I spoke to. Plastic bead or soda were deemed to be ok. The pressure put through the blaster is also important.

    Quote Originally Posted by 1950landy View Post
    If you go down the road of using paint stripper, make sure the one you use is aluminium friendly, I had one once that attacked the aluminium, it can also cause a lot of heat causing thin panels to buckle.
    Wow, hadn't thought of that one. Thanks.
    ​JayTee

    Nullus Anxietus

    ​Getting involved in discussions is the best way to learn.

    2000 D2 TD5 Auto: Tins
    1994 D1 300TDi Manual: Dave
    1980 SIII Petrol Tray: Doris
    OKApotamus #74
    Nanocom, D2 TD5 only.

  8. #8
    Join Date
    Apr 2019
    Location
    South Australia
    Posts
    413
    Total Downloaded
    0
    I had Sid sandblasted, a took the panels to a glass bead specialist but he ended up using garnet

    They are very good at what they do and took it very gently, the end result was excellent.

    That said, my current project, a 1959 Thames I’ve just used stripper which is excellent and takes all layers off in one go. Tested several brands and CAM is by far the best. Did the whole exterior shell in a weekend using two tins ($100 in total)

    PPE is essential though.

    There is a local firm that does hydro wet blasting which looks great as they come to you and do it in your drive. Thought about soda, but you do have to treat the shell afterwards.

    There is a dip tank place in Adelaide, but it eats aluminium so only on steel.

  9. #9
    Join Date
    Jan 2014
    Location
    Perth Western Australia
    Posts
    2,450
    Total Downloaded
    0
    *The biggest issue with getting car panels stripped using media blasting is the heat that's generated, which is what buckles panels.
    *A good blaster that can do panels will have no issue.
    *Media blasting such as alum oxide, garnet, glass etc is a profiling finishing, the courser the media, the more profile.
    *Soda blasting is a non profiling blast and less aggressive on the surface (turbine blades in power generation are cleaned using soda blasting)
    *Depending on the painter, some say you need a profile, some say you don't. This may be irrelevant with alum as you are using a etch primer.

    P.S with any media blasting, you get a degree of impregnation into the surface and it gets into all the tiny nooks and crannies making it very difficult to clean out.
    wet soda blasting has no adverse effect on the surface.

    Cost, the cheapest is prolly the paint stripper and your time
    Regards
    Daz


  10. #10
    Join Date
    Sep 2010
    Location
    The Hills.
    Posts
    15,795
    Total Downloaded
    0
    Quote Originally Posted by Cadas View Post

    There is a dip tank place in Adelaide, but it eats aluminium so only on steel.
    Yonks ago a bloke I knew stuck his twin carby setup into one in a basket. Wound up with a basket of brass fittings.
    ​JayTee

    Nullus Anxietus

    ​Getting involved in discussions is the best way to learn.

    2000 D2 TD5 Auto: Tins
    1994 D1 300TDi Manual: Dave
    1980 SIII Petrol Tray: Doris
    OKApotamus #74
    Nanocom, D2 TD5 only.

Page 1 of 2 12 LastLast

Tags for this Thread

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Search AULRO.com ONLY!
Search All the Web!