Got my CF hull a few days ago and looks cool,,but the inside""""" what sealer do i need for it, i want to keep the carbon look so what can i seal it with thats clear and stronge?????
Got my CF hull a few days ago and looks cool,,but the inside""""" what sealer do i need for it, i want to keep the carbon look so what can i seal it with thats clear and stronge?????
Clear Rustoleum acrylic enamel should work well. Although, there's probably something better that someone here might be able to suggest.
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It doesn't matter what the hull was made from if you use epoxy! Thin it with denatured alcohol (NOT the stuff from walgreens, etc. that is isopropyl and contains water!)
Thin it to a consistency suitable for brushing. Don't overdo it! I use at least 30 minute epoxy so it has time to flow out. It will be strong and clear.
I have two part 30 min epoxy,,,can i thin it with acytone i have a can of that,,,or is that to agresive..
PS is the Acrylic enamel paint stronger then the Lacqur....
Fightercat, you have access to different hulls they make. Take one of the carbon genesis hulls and one of the gelcoated glass hulls. Smell them and see if you can tell a difference. I have a bad nose, and can not tell the difference between the two if the hulls are old. If newer, you can smell it. Also, try wiping it down with rag with some acetone on it. Epoxy should not be phased, but newer polyester might feel a little tacky afterwards.
Also try to compare the colors. I know the carbon boats are black, but see if the resin looks clearer than the gelcoat boats.
The boats in question should be epoxy! As I have mentioned in the past, people think of composites as containing two parts, but it is really three. The fabrics are treated with a binder to help the resin bind to the fabric. Carbon fiber is only compatible with epoxy resins, matt with polyester resins; kevlar, eglass and sglass with either (typically!).
Epoxy can be used over either of them, but the first thing I would do would be to scuff it up and wipe it down with acetone. You want that surface really clean and rough so the next layer of epoxy bonds to it really well.
Now, this is my personal opinion following, and worth twice what you paid for it! You want to attach items securely to the hull, especially the motor mount. Before doing anything to smooth out the inside of the hull, I would attach these items. Anything you put between the base layup resin and the epoxy to hold in these items is a weak link. I am amazed when i take apart a used boat at how easy things come out of them. People actually epoxy in an item after the inside of the hull was painted! yeah, the epoxy might be strong, but how much adhesion does that paint have? Remember, epoxy is a mechanical bond. Give it a good surface, and it is incredibly strong. But even epoxy will pop right out of a mold since it is waxed!
So, I would just scuff the surface, clean it and epoxy in the things you want. I also do not use the hobby epoxy for that, it comes out rather easy. I use a laminating resin that I thicken with glass fibers or kevlar pulp - very strong. I do not have experience with 30 minute epoxy vs the 5 minute hobby stuff. Why get 30 minute epoxy when I have a gallon of laminating resin?
Why do you want to coat the inside of the hull anyways? leave the nice carbon look. If you want it shiny, then I would brush on laminating resin. I use the epoxy from UScomposites.com and it works great. People love to rave about the west systems, and it is good, but it is very pricey. If you are just brushing it on as a sealer, either will work just fine. The Qt kit of west is about $45, the USC is 1/2 that.
if you use a paint on the inside, I am afraid you limit the future bond strength of anything you attach to the hull unless you are using a very strong two part paint. besides, you are just adding weight after buying a carbon fiber hull?!?!?!?!?! Why????
also watch the sunlight exposure. Epoxy is not UV stabilized and sunlight can damage it. so only run that hull in the dark!!! nah, who stores thier RC boat outside in the sunlight? The small amount of exposure they get while running should not effect it at all, that is more for large things that spend thier lives outside like full size boats and cars, but then they are usually painted or protected someway.
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