Paint not sticking to my frame

[jefferygs500]

hey guys, i got a problem. I am painting my frame black. I got the paint in the spray cans, gloss black. put it on, let it dry for 3 days, looks really good. no problem with that. I am putting gloss clear coat over it. when i put this stuff over the paint, a very light coat, it makes bubbles and cracks in the black? whats causing this? Some spots be find and then some other's be shameful.
Please don't tell me to powercoat it cause theres no wheres around here that does it. i just want to find out why it's doing this. thanks

[weaselnoze]

im no paint expert but i know that prep work is the most important thing.  the surface must be sanded with the proper grit paper and a sufficient coat of GOOD primer BEFORE the paint.

[DerekNC]

I'm no expert either so take this with a grain of salt. Two incompatible paints can cause the "effect" you're talking about. I know people that actually try to achieve this effect while painting boomerangs. 

[jnande4176]

Yes, Derek is right. Also, your climate can have an effect on paint flaking, bubbling, etc. If it is too cold outside, or too humid, you will have problems with paint sticking, flaking, bubbling, etc. Also, what kind of paint are you using, enamel, epoxy, etc.? Details can help others help you diagnose the problem you are having.

J Anderson

[calvert0014]

i think that your problem is that you are using gloss paint to start out with. i would probubly start with a flat base coat and put the clear on top of that. im no ecpert but its just a thought

[kirbyQ45]

WOW Painting Boomerages. Thats impressive.

[budget speed demon]

I'm about to do the same thing (paint my frame black). And I'm curious why you decided to use a spray paint? Is the bike striped down to the frame?

I'm keeping mine together for the process witch will be as follows:
-removing the tail plastics
-sand the shaZam! out of the frame with some very course sand paper, take my time and get every spot
-sand it all again with some finer sand paper
-wash the bike, again taking my time, making sure to get all of the tight spots
-get out the trimclad gloss black and a couple of different sized foam brushes and paint away

The nice thing about the brush on is that if it gets chipped or damaged, it's really easy to fix up; just get out the paint and a brush. It'll take you all of 5 mins. But if you're spraying stuff, then when you want to touch up, you've got to worry about masking stuff off, and spraying, and then it may not match up perfectly. Another plus of the trimclad is that it is a metal paint, so it's rather durable and sticks well. The upside of spraying is that you'll get a much glossyer final product.  That's my take on the situation. 

[jnande4176]

You can always just do what I did and invest in an airbrush. I bought mine about a year ago and have used it for many, many things including touching up paint on my car, painting various small objects, model motorcycles, etc. I just love it. Plus, you can set the flow rate and spray radius, so you can paint some things without having to mask surrounding areas. It is great.

[un1261]

Was there paint on the frame before the base coat? Did you paint on metal or exsisting paint? Bare metal needs to primed.

It also sounds like you may using two different types of Paint, enamel or acrylic. One can be painted over the other but not the other way around.

[jnande4176]

If you are going rattle can though, this is what you need.....

http://www.krylon.com/main/product_template.cfm?levelid=5&sub_levelid=13&productid=1790&content=product_details

Awesome rattle paint!

[average]

+1. I ve fallen in love with the hammer finish. I used that to paint some stuff at work and used it to paint some suspension components on my other car. Awesome paint

[budget speed demon]

I've been thinking about doing my body work in Krylon fusion gloss black. it'd be cheap, but I'm not sure how well it would work on the metal tank.

http://www.krylon.com/main/product_template.cfm?levelid=5&sub_levelid=10&productid=1751&content=product_details

[average]

if its meant for plastic, it probably wouldnt adhere to the metal like its suppose to

[jnande4176]

Just use this if you are gonna rattle can.....http://www.krylon.com/main/product_template.cfm?levelid=5&sub_levelid=9&productid=1745&content=product_details
It should ahdere to both plastic and metal, although you are gonna want to sand and prime the tank if you are gonna paint it. Makes the paint stick better and gives a nice, smooth finish.

[Egaeus]

Some tips on repainting.

http://www.thegsresources.com/garage/gs_repaint.htm

This was sent to me by Mandres.