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  1. #1
    Senior Member
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    Prepping for paint-Sandblasting

    I have been considering DIY or a shop to sandblast a frame. It is a 1984 Miyata 610. Though that this forum might provide some guidance.
    What grit sand whether I go the DIY route or the shop? Some have suggested soda blasting as an alternative.
    I really like this bike and want to be careful not to do any damage. So your advice would be great.
    Thanks!

  2. #2
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    I do not know too much about sandblasting, but if you do not mind wearing protective wear, including eye protection, chem stripper I have had good luck with is called aircraft stripper. The paint tends to bubble up within minutes and then you wire brush/ wire wheel off. By the way, did you ever check out the Ravello ez step over/ travel bike? potentially for your wife?

  3. #3
    Senior Member
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    Thanks I did look them over. Fortunately she has become more flexible! Must be all the time at the Y.

  4. #4
    Randomhead
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    you want to remove the paint with a stripper and then media blast

  5. #5
    Senior Member
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    Forgot to mention that my favorite way to apply the paint stripper is to pour the stripper into a tin can and use an extended tooth brush and spread it on.
    Because of the strong chemical, be sure to use full arm, hand and preferred face/eye protection.

  6. #6
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    Double process sounds good as the stripper will not create high surface energy you need a blaster to do that and the effect drops off fast so you want a local guy you can run straight to the spray booth from.

  7. #7
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    Thanks for the replies! I like the idea of the "double process".

  8. #8
    coprolite fietsbob's Avatar
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    there are other materials to blast at it besides sand, walnut shells , beads and etc ..

    thats the media, wont tend to eat into the steel .


    Why you got a sand blasting Box in your garage?

  9. #9
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    No I was just going to do it outside. I know it is a messy job but maybe if I use stripper first the sand blasting will be a quick job.

  10. #10
    Senior Member squirtdad's Avatar
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    I would just chemical strip. Sandblasting done wrong can remove metal from thing tubes
    '82 Nishiski commuter/utility
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  11. #11
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    I recently built my first frame, and took it to a local place that sold headstones and other sand blasted stone products. They did a great job on my frame for $18. Wish I had asked what grit he was using, but it was very even and did not appear to remove any meaningful amount of material. Cheaper and much easier than buying chemicals and scrubbing for a few hours!

  12. #12
    Randomhead
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    I have sandblasted the paint off of frames, and it's a pain. I think if you can find a place to strip and sandblast, that would be the way to go. A newly built frame is a lot easier to sandblast than a previously painted frame

  13. #13
    Senior Member Nessism's Avatar
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    Unless you have an industrial blasting setup you don't need to worry about eroding the metal. Standard aluminum oxide or garnet 100 grit should do nicely to prep the metal for paint. I've used regular old silica sand before and that worked fine as well, but if you do this please take proper blasting precaution so you don't breathe the dust.
    Becareful buying/selling bike parts on-line. I learned the hard way. :(

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  14. #14
    Andrew R Stewart Andrew R Stewart's Avatar
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    Quote Originally Posted by Tandem Tom View Post
    No I was just going to do it outside. I know it is a messy job but maybe if I use stripper first the sand blasting will be a quick job.
    TT- I hope your neighbors are far from your blasting area. Few like a sprinkling of sand or other media on their lawn/plants. Sure it blows off or settles into the soil in a while...

    I agree with the stripper first then only blast the remaining as little as needed. Andy.

  15. #15
    Senior Member SJX426's Avatar
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    I would avoid blasting. Strip and remove all paint and primer, whatever works. Use a rust converter to treat the frame prior to painting. This last step ensures that all the previous rust is converted and provides protection.
    https://en.wikipedia.org/wiki/Rust_converter
    Bikes don't stand alone. They are two tired.

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