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Building Tips and technical articles. => Building techniques => Topic started by: Rob Killick on May 13, 2007, 04:14:38 PM

Title: Urethane finishes ?
Post by: Rob Killick on May 13, 2007, 04:14:38 PM

Hi ,

I've been going through several posts , concerning urethane finishes ( MinWax , mainly), but due to my location (Canada) , I'm having trouble discerning the differences between Canadian product names and U.S. names .
 At this moment I have a can of Minwax "Helmsman" spar varnish (urethane) . I'm wondering if this would be an "OK" finish , that would be a good fuel-proofer ?
Any input would be appreciated :)

Thanks !

Title: Re: Urethane finishes ?
Post by: minnesotamodeler on May 13, 2007, 04:22:37 PM

the Helmsman spar varnish in the rattlecan is indeed fuelproof, at least as much as anything is.  I use it as a topcoat over paint that isn't, and it holds up well.  A surprisingly light coat is all that's needed. Besides that it's *shiny*.  Just give it a couple days to cure out before you fly.

--Ray

Title: Re: Urethane finishes ?
Post by: Bill Little on May 13, 2007, 04:58:25 PM

Thanks, Ray.  I have some of that, but have never used it on an airplane!  Glad to know it will work for us.

Title: Re: Urethane finishes ?
Post by: Rob Killick on May 13, 2007, 05:44:59 PM

Yessiree !

Thanks Ray

Title: Re: Urethane finishes ?
Post by: Bob Reeves on May 14, 2007, 06:19:54 AM

Look on the can and see if it says anything about being Alcohol resistant after it's cured. I went to our local Home Depot and bought 5 or 6 cans of different brand polyurethane just to run some tests. The ones that stated they were resistant to Alcohol were all fuel proof, the ones that didn't weren't.

Title: Re: Urethane finishes ?
Post by: minnesotamodeler on May 14, 2007, 07:53:55 AM

Useful bit of info...thanks, Bob.

Title: Re: Urethane finishes ?
Post by: Larry Wong on May 14, 2007, 08:07:27 AM

I've used Minwax and found it fuel proof , But it is vary hard finish tends to chip easy, and a lot of polishing to get the finish I wanted.  I have change to PPG automotive clear with less work and great finish and vary shiney...... #^ #^ #^ #^ #^ #^ #^ #^