Clear Coat Disaster...

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Clear Coat Disaster...

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fibernoob	fibernoob posted 8 Years Ago HOT Topic Details
Group: Forum Members Posts: 34, Visits: 134	Hi all. After some attempts I have successfully made a resin infused part and learn t the hard way with the many costly mistakes. However I am having great difficulty with the clear coat stage. The clear coat seems to just open many holes and give a nasty irregular (big orange peel like) finishing and has damaged all my attempts. I had initially suspected it to be release agent in the part expelling the clear coat since the first part came out with a matt finish (due to excessive and unpolished release agent). During the next attempts I used less release agent and polished the mold thoroughly leaving it with high gloss finish. The part seemed to come out OK … but since the part will be exposed to sunlight I opted to get it clear coated. I also thought it would give the part more depth and a higher quality look and avoid yellowing in future. We have tried various clear coating methods but it always just opens up many holes again and again… Has anyone experienced this before ? Help would be greatly appreciated. Method : Resin Infusion Process Resin : Huntsman High Viscosity Epoxy Resin Release agent : Huntsman Renlease QZ5111 Clearcoat : Automive PU Clear / PPG ACS Attachments IMG_8804.jpg (1K views, 59.00 KB) Tags blemishes clear clearcoat orange peel problems
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fibernoob	fibernoob posted 8 Years Ago HOT Post Details
Group: Forum Members Posts: 34, Visits: 134	+x Interloper393 - 11/22/2017 10:55:17 PM +x fibernoob - 11/22/2017 9:29:34 PM Hi all. After some attempts I have successfully made a resin infused part and learn t the hard way with the many costly mistakes. However I am having great difficulty with the clear coat stage. The clear coat seems to just open many holes and give a nasty irregular (big orange peel like) finishing and has damaged all my attempts. I had initially suspected it to be release agent in the part expelling the clear coat since the first part came out with a matt finish (due to excessive and unpolished release agent). During the next attempts I used less release agent and polished the mold thoroughly leaving it with high gloss finish. The part seemed to come out OK … but since the part will be exposed to sunlight I opted to get it clear coated. I also thought it would give the part more depth and a higher quality look and avoid yellowing in future. We have tried various clear coating methods but it always just opens up many holes again and again… Has anyone experienced this before ? Help would be greatly appreciated. Method : Resin Infusion Process Resin : Huntsman High Viscosity Epoxy Resin Release agent : Huntsman Renlease QZ5111 Clearcoat : Automive PU Clear / PPG ACS Pin holes is common with clear onto epoxy. You need to do it s few times and sand it with 400grit between coats. , final coat sand with 800 and then clearcoat. Orange peel is more likely your mix and spray gun setup Thanks for the reply... Do you mean i need to clear coat and sand a few times ? Its not exactly orange peel .. its the clear coat opening up into uncovered areas Edited 8 Years Ago by fibernoob
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Interloper393	Interloper393 posted 8 Years Ago HOT Post Details
Group: Forum Members Posts: 90, Visits: 634	+x fibernoob - 11/22/2017 11:39:05 PM +x Interloper393 - 11/22/2017 10:55:17 PM +x fibernoob - 11/22/2017 9:29:34 PM Hi all. After some attempts I have successfully made a resin infused part and learn t the hard way with the many costly mistakes. However I am having great difficulty with the clear coat stage. The clear coat seems to just open many holes and give a nasty irregular (big orange peel like) finishing and has damaged all my attempts. I had initially suspected it to be release agent in the part expelling the clear coat since the first part came out with a matt finish (due to excessive and unpolished release agent). During the next attempts I used less release agent and polished the mold thoroughly leaving it with high gloss finish. The part seemed to come out OK … but since the part will be exposed to sunlight I opted to get it clear coated. I also thought it would give the part more depth and a higher quality look and avoid yellowing in future. We have tried various clear coating methods but it always just opens up many holes again and again… Has anyone experienced this before ? Help would be greatly appreciated. Method : Resin Infusion Process Resin : Huntsman High Viscosity Epoxy Resin Release agent : Huntsman Renlease QZ5111 Clearcoat : Automive PU Clear / PPG ACS Pin holes is common with clear onto epoxy. You need to do it s few times and sand it with 400grit between coats. , final coat sand with 800 and then clearcoat. Orange peel is more likely your mix and spray gun setup Thanks for the reply... Do you mean i need to clear coat and sand a few times ? Its not exactly orange peel .. its the clear coat opening up into uncovered areas Yeah when your parts out the mould, 400grit sand it and degree's it. Apply few lite coats of clear, like mist coats. Give 10 minuit between coats and then do a few heavy coats. Let it dry and check the finish. If there' pinholes repeat the above sets. Sometimes I need to do it about 3 times.
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