Rust shield also produced a laquer paint which has been discontinued and it is compatible with that as well. I have used it with several bikes so far. Trust me, it works. My dad's bike fell over onto a large cast iron fireplace mantle and didn't suffer more than a scuff. I tried it on my two-tone 49 Schwinn first. After a few weeks of curing, I smacked the bike with a screw-driver and it was fine. The shop I got it from still carried rust-shield laquer at the time, so I took a chance. It works! The finish will stay tacky for awhile unless you get it in the sun. Had it been a failure I wouldn't post it. Maybe it's not designed for duplicolor laquers, but so far I have used it with duplicolor clear several times, and have been happy with the results. The main thing is that it is UV cured. The guy who told me about it used it with laquer clear about a year and a half ago, and his car is still holding up fine. I don't know, I don't always do things the way I'm told or follow instructions 100%, but sometimes things work out just right. I guess this is one of those "happy accidents". Take it for what it's worth. I do the proper prep work, use it the way I stated, and as a result, my bicycle finishes (so far) have done great and it has saved me from a bunch of touch ups due to falls and possible knicks and scrapes. I guess I should say at this point "Try at your own risk" . LOL People also say not to spray laquer over an enamel primer, but I have an entire photobucket account to the contrary if anyone wants to look. Go to PB username ozzmonaut , album name bike stuff. I'll try to put a few pics in of my 52 and 55 as well since they are flashy show quality paint jobs.