Originally Posted by
poprad
I would advice against sandblasting; it can remove material from the frame.
Sure, if you keep at it, you can turn the whole frame to dust!
You could do the same with sandpaper too, only it would take a F of a lot longer!
Me? I use BOTH!
First the Jasco (love that stuff
). Then a quick blast with #60mesh sand to get the tight spots and give the rest of the frame some "tooth" for the paint.
I use a pressure feed blaster*, as opposed to a gravity or syphon feed.
The gravity feed takes FOREVER and uses 200 lbs of sand!
With the pressure blaster, I can do a frame & fork with about 40 lbs of sand. Maybe 60 lbs, if I didn't do the Jasco first.
*This is a picture of it. The sand is loaded in that small neck at the top of the tank with a funnel.
The nozzle is actually quite small, so it's perfect for bike frames. It's the tiny white tip at the end of the hose. The opening is about 1/4". Harbor Freight for about $150. Sand; $8 for 100lbs.