Bike Cafe · Public discussion

paint job

Started by krs333 · · Last activity · 11 posts · 840 views

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Bike Cafe
Published
14 June 2010
Last activity
17 June 2010
Original author
krs333
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11
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  1. Hey all. Newbie here working on a single speed project. Can a bike be painting if the bike has some small rust spots here and there? Also, what would be a good way to get them off or cover them up.

    Thanks

  2. The rust should be removed before you paint the frame..

    How are you planning to paint the frame?

  3. 64Paramount said:

    The rust should be removed before you paint the frame..

    How are you planning to paint the frame?

    I was thinking of spray painting it, but I think I may have them powder quoted to save some time. I just need to know how to remove the rust spots before sending it in.

  4. If you've already got the frame cleaned well, then I would wipe it down good with paint thinner and then see what's left.

    If you still have surface rust spots then you'll need to sand them down with some fine sand paper. Then wipe them again with paint thinner to make sure you have clean bare metal.

    If you really want a slick looking paint job when you are finished, then you will probably need to fill and sand, then primer and sand again, those little chips in the existing paint, otherwise they will really show when you put the new paint on.

    If you are going to powder coat the frame, I'm not sure how that will work. I've had new bare metal "under the hood" car parts powder coated and they look great, but I've never had parts that already have paint on them powder coated, nor have I ever had any powder coated exterior parts that would be exposed to the elements like a bicycle frame would be. Hopefully you already have experience in this area...

  5. Thanks for the tips. I am going to start stripping the paint this weekend.. I was also thinking of sand blasting the frames to take the rust of. As for the powder coated side the paint will hold up well in natural heat. Should not have a problem with that.

  6. I do have experience in this area and sandblasting is the right way to go for prepping the frame. You don't want any paint on it at all. Powder Coating is great. It is made of polyester so it will flex rather than crack as the bike flexes. It is also very scratch resistant . Unfortunately that there is not a good way to touch it up if it does gets scratched. You pretty much have to sand, primer, and paint the scratched area and then hope that you don't get any moisture under the powder coating.

  7. krs333 said:

    Thanks for the tips. I am going to start stripping the paint this weekend.. I was also thinking of sand blasting the frames to take the rust of. As for the powder coated side the paint will hold up well in natural heat. Should not have a problem with that.

    You might save your energy, if you're going to have the frame powder coated, and not sandblast yourself. I had a set of race wheels--motorcycle--powder coated, and as part of the process, the wheels were bead blasted to remove paint. It was standard ops for the powder coater in question.

  8. Having the frame sand blasted or bead blasted is what I would do if I really wanted it to look good.

    Then I would have it prepped, primered, and painted by a professional autobody/paintshop.

    You can do a lot of the prep work yourself, but good paintshops warranty their work and they will probably strip the frame to bare metal so that they know it has been done right. So any work you have already done is just a waste of time, money, and effort.

    Ooops, I see some other folks added some replies about prep work and powder coating while I was fumbling around with my reply...so, listen to what they said.

  9. As noted above, if you plan on having a shop powder coat the frame, let them do the sanding/blasting/repair prep work as well.

  10. Scotty_Dog said:

    As noted above, if you plan on having a shop powder coat the frame, let them do the sanding/blasting/repair prep work as well.

    I agree with Alienator and Scotty Dog. Easier and better to get the shop to prep the frame.

  11. Hello,I was thinking of spray painting it,but first of them clean the frame well.

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