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top sheet repair

post #1 of 5
Thread Starter 
I have a small nick in my top sheet at the edge, they are sandwich construction. What's the best way to fix/ prevent further damage?
post #2 of 5
A shop would use 24 hour epoxy, sometimes called marine epoxy, to repair it. Some people also recommend Gorilla Glue, it's waterproof and no mixing or fumes. Search for either "24 hour epoxy" or gorilla glue on TGR and there'll be lots of description on how to do it. BTW, I'm no expert, but had to do the same thing myself a while ago.
post #3 of 5
Gorrilla glue is a polyurethane glue. It will expand as it cures in the presence of moisture, resulting in a small bubble where the repair is. If you were to sand/shave down the expanded area, you would be left with some what of a foam texture. The expansion makes it great for interior woodworking projects, but there is no U.V. inhibitor to prevent the glue from breaking down. I've worked at yacht manufacturing company for over five years now, and the lack of U.V. protection is the main reason that we use epoxy for everything.

As for the "marine" epoxy, West Systems or System Three are both good brands. The mixing must be exact, and the cure can be very temperature dependant. I've also never really seen marine epoxy available in small quantities; I usually purchase what I need form work or take home the sample packs that vendors send us. It tends to be quite pricey.

I repaired a similar chip in the top sheet of a snowboard a few weeks ago. I used System Three because A) it was already on the workbench B) I use it all the time to make composite canoes, and C) It is used to make custom/homemade skis. Because I left it in the basement to cure, three days later it was still sticky. In the end, I cleaned it up and did it again.

The best bet is to just go down to the local hardware store and pick up a package of LockTite epoxy, make sure it is the clear kind (the other one will cure milky white). The 90 minute version will have a higher strength, and may be more resistant to being knocked off, 5-minute should be just fine though. Tape the area around the repair, and lightly scuff the spot up with some sandpaper, not too fine or the epoxy won't stick to anything (use around120grit). Clean the area with denatured alcohol or rubbing alcohol and allow it to evaporate. The mix up some epoxy and dab it on. This is where I usually leave it, as the epoxy is self-leveling. Wait a day for it to fully cure before use. If you really want it too look smooth, you can shave of any excess with a razor blade and then wet sand with progressively finer sand paper.

Locktite 90 minute PoxyPack

Locktite 5 minute PoxyPack

I just did a quick check, a quart of West Systems (way more then you would ever need) is $32 + $15 for the hardener. System Three is around $35 for a 1.5 pint kit. Shipping is usually pricey, and ground only. $3 at Home Depot or Lowes will probably outlast the skis.
post #4 of 5
I've seen what is labeled as 24 hour epoxy for same in small tubes in Home Depot. Never used it though. It's also available from Tognar and others.
post #5 of 5
Thread Starter 
Thanks guys. Will do this weekend
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