Reisens and UV

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Reisens and UV

Author	Message
meir	meir posted 9 Years Ago HOT Topic Details
Group: Forum Members Posts: 8, Visits: 117	Hello Guys. doing my first steps with composites, i am experimenting with skinning car parts with carbon fiber. i have a lot of questions to ask, so i apologize in advance for bombarding the forum with different subject so this is my first subject and few questions. 1. understanding that Epoxy is not UV stable. what is the downside of skinning parts with polyester resin (that i understand it is UV stable)? 2.how much UV stabuiletyis offered by the XCR resin? will it be stable enough and will not turn yellow over time if not clear coated? Edit: 3. can this product be use as an alternative/replacement for clearcoat? https://www.easycomposites.co.uk/epoxy-bonding-polyester-gelcoat-clear thanks in advance. Meir. Edited 9 Years Ago by meir
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Dravis	Dravis posted 9 Years Ago HOT Post Details
Group: Forum Members Posts: 592, Visits: 1.9K	Hi! Welcome to the forum!! CG50 is a specialized Gelcoat, and does not work all that well as a top coating resin. It is formulated to ensure a good bond by WET epoxy to the dry (partly cured) Gelcoat. It will often delaminate if you apply GC50 wet to a dry (cured) Epoxy surface I have however had some small success using GC50 to repair on top of damaged epoxy based CF, which has been repaired with Epoxy Laminating resin, left to cure to a hard tack. I would not try to use it for skinning -- it will NOT soak into the CF fabric -- A lot of "Skinners" that I know of uses polyester for skinning but it has one distinct disadvantage .. If the parts are not stable in their shape, or soft or "floppy" the high shrink ratio of most polyesters will distort the skinned parts heavily -- "Sapere Aude"... Dare to KNOW! The written word is the only truly efficient vehicle for transmitting a complex concept from mind to mind... 103% of all people do not understand statistics... Do not adjust our mind, theres a fault in reality :-)
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meir	meir posted 9 Years Ago HOT Post Details
Group: Forum Members Posts: 8, Visits: 117	thank you Drasvis for the short but detailed explanation. i will stick to epoxy, and will probably end up clear coating it. i had bad results with my first try of clear coating, so i was checking the alternatives. more sending, different products, and i'm starting to get better results. i guess my first mistake was spraying at the wrong time. painting in south florida this time of the year, is not the best idea (30c with close to 80% humidity). so i dropped a portable AC unit in my garage and got better results at (25c with 55%h). i'm going to open a new thread with my skiing experience, so please send all your "skinners" friends my way thanks again. Meir
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