[TheForge] krylon clear for exterior use

[Reynolds]

A smith I know in Montana uses Incralac.... been on for ten years on one outdoor sculpture and hasn't failed. Xylene based.



 --- On Tue 06/03, RIES NIEMI < Rniemi@fidalgo.net > wrote:
From: RIES NIEMI [mailto: Rniemi@fidalgo.net]
To: theforge@mailman.qth.net
Date: Tue, 03 Jun 2003 15:13:37 -0700
Subject: Re: [TheForge] krylon clear for exterior use

on 6/3/03 11:12 AM, Catherine Jo Morgan at cjmorgan@hemc.net wrote:<br><br>> I haven't run tests on this myself, but a usenet blacksmithing and<br>> metalworking thread reported that someone else had run tests and found<br>> that Krylon clear didn't last well outdoors. Unfortunately it's the<br>> sunlight that seems to break down most clearcoats outdoors. Under a<br>> roof, it may fare better.<br>> <br>> If I had to finish something now for this situation, without running any<br>> tests, I'd use General polyacrylic in the stronger version, their<br>> waterbased polyurethane - a brush-on varnish. It requires good<br>> protective gloves and fair ventilation, but brushes on well and is a lot<br>> less toxic than Kamar too. For use directly on iron I'd add a rust<br>> inhibitor, but over gun metal finish I'm not sure. Guess I'd have to run<br>> a test after all.<br>> <br>> Catherine Jo Morgan<br>> Morgan Sculpture<br>> Iron and mixed media vessels<br>> cjmorgan@hemc.net<br>> <br>
 <br>I have tried a variety of finishes, and I dont think there is a really good<br>clear finish for outdoor use.<br>All paint requires repainting when used outside.<br> Krylon definitely gets rusty after a few months to a year. I use it<br>indoors, and even there its not really long term.<br>I have had mixed success with clear powdercoating. I have used a low gloss<br>clear powdercoat over steel, and it will hold up alright in a mild<br>environment- for say 3-8 years.<br>I did have a few chairs that were clear powdercoat outdoors in san<br>francisco, and the salt air started peeling that powdercoat after about 2<br>years. <br>I have found powdercoating in general is not a permanent outdoor finish. It<br>works best in places like phoenix, where there is basically no rain, but<br>even in LA, between sun, rain, and smog, I figure 5 years is about max<br>before powdercoating starts to crack, buckle and peel.<br><br>_______________________________________________<br>http://mailma
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