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| Gelcoat and Preval Sprayer http://www.hobie.com/forums/viewtopic.php?f=20&t=49080 |
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| Author: | Paris [ Tue Aug 27, 2013 5:45 am ] |
| Post subject: | Gelcoat and Preval Sprayer |
I picked up some Preval 267 Sprayers and finishing Gelcoat. Am I going to need to thin the Gelcoat or will the Preval sprayers handle it without thinning? What is the most affordable thinner to use, if that is necessary? |
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| Author: | mmiller [ Tue Aug 27, 2013 8:35 am ] |
| Post subject: | Re: Gelcoat and Preval Sprayer |
You need to thin it. I used to use acetone. Thin to a milky consistency. Spray light / thin coats and wait a bit between each (10 seconds?)... been a long time though! |
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| Author: | Tom King [ Thu Sep 12, 2013 4:56 pm ] |
| Post subject: | Re: Gelcoat and Preval Sprayer |
Thin with styrene. |
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| Author: | HOBIE 911 [ Fri Sep 13, 2013 7:11 pm ] |
| Post subject: | Re: Gelcoat and Preval Sprayer |
Second the styrene. Especially white gel. Thin until sprays evenly, use a test surface. Apply thin coats as Matt says, wait a couple of minutes between coats. Last coat should have "sanding aid" added to allow for proper anerobic curing and ease of sanding out of "orange peel" hardened surface. |
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| Author: | GD_NC [ Fri Sep 13, 2013 7:33 pm ] |
| Post subject: | Re: Gelcoat and Preval Sprayer |
+2 on Styrene - Put down a couple more coats than you think you need. Prevail sprayers with thinned gelcoat take several (many?) coats to build up a decent layer of gel on the boat. It's much easier to do a little extra sanding than have to respray after you've sanded through a too-thin layer of Gelcoat. |
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