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Building Tips and technical articles. => Paint and finishing => Topic started by: Randy Powell on March 10, 2009, 12:36:05 PM

Title: Offbeat clearcoat question
Post by: Randy Powell on March 10, 2009, 12:36:05 PM
I was reading a thread about Allen's Olympus (I think on SSW) and he said that he used iron plastic on the flying surfaces and shot the whole plane with clear (catalyzed poly, I think). Anyway, it's wasn't clear (sorry for the pun) exactly what was used. How is this done? Do you have to rough up the iron-on first? Use steel wool on it or something. I can't imagine you'd get much of a bond otherwise.

Any information on the technique of shooting a clear coat over iron on?
Title: Re: Offbeat clearcoat question
Post by: Allan Perret on March 10, 2009, 05:44:41 PM
Anyway, it's wasn't clear (sorry for the pun) exactly what was used. How is this done?

I pulled this from a 2nd thread about the Olympus.

"Well, I have weighed the Olympus tonight. I gained two ounces using the Nason (DuPont) clear coat. I added one medium coat of the Nason and mixed as stated on the can."
Title: Re: Offbeat clearcoat question
Post by: Randy Powell on March 10, 2009, 06:02:25 PM
Allan,

Yea, I got that part (went back an looked myself). It didn't' seem that there was any special surface prep except making sure it was clean. Something I may try.
Title: Re: Offbeat clearcoat question
Post by: CharlesF on March 29, 2009, 10:28:01 AM
I put the color trim on my Thunderbird flying surfaces (plastic) with stuff called "RC Colours" from a spray can (made in Belgium) It stuck fine and that's 3 years ago. Plastic wasn't Monokote but "suprcoat" or some such name.

Charles
Title: Re: Offbeat clearcoat question
Post by: Randy Ryan on March 29, 2009, 11:51:28 AM
I'm interested in this too, I've tried clear dope over film, but a single scratch and the dope comes off in sheets even if the film was roughed up. Sure looks good though.
Title: Re: Offbeat clearcoat question
Post by: Randy Powell on March 30, 2009, 03:34:29 PM
RAndy,

I'm told it's because dope dries too hard. There would be no chemical bond, after all. I may try it on this current plane with catalyzed polyurethane, but probably not. I will try overlapping the clear I plan to shoot on the fuse over the edge of the plastic covering and see how that works.