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larryhorne
08-17-2009, 12:21 PM
Whats wrong?

I'm using a fresh tube of 3M 5200 Fast Cure to fill existing screw holes in the deck of a Carloina Skiff J12 and twice now it rises out of the holes (up to 1/4" dia.). Whats going on? I think I'm going to switch to WEST SYSTEM with micro beads then sand and paint entire deck but would like to know what's going on.

Thanks

Lar:helpsmilie:
gw204
08-17-2009, 03:06 PM
When you push the 5200 into the holes, it pressurizes the air that's in the hole and that in turn pushes the stuff right back out. Switching to a thickened epoxy won't fix that. Here's how to properly fill that hole:

1. Drill it out slightly to remove any existing sealant. Countersink the end of it.
2. Clean the hole w/ acetone using a small epoxy/paint brush.
3. Paint the entire hole as best you can w/ a light coat of unthickened epoxy.
4. Using a small syringe, inject epoxy thickened with cabosil into the hole. Bottom out the syringe in the hole and slowly pull it out as you inject the mix. Fill to the top. This ensures the hole gets completely filled and there aren't any air bubbles.
5. When cured, sand flush.
Bryansfish
08-18-2009, 11:08 AM
When you push the 5200 into the holes, it pressurizes the air that's in the hole and that in turn pushes the stuff right back out. Switching to a thickened epoxy won't fix that. Here's how to properly fill that hole:

1. Drill it out slightly to remove any existing sealant. Countersink the end of it.
2. Clean the hole w/ acetone using a small epoxy/paint brush.
3. Paint the entire hole as best you can w/ a light coat of unthickened epoxy.
4. Using a small syringe, inject epoxy thickened with cabosil into the hole. Bottom out the syringe in the hole and slowly pull it out as you inject the mix. Fill to the top. This ensures the hole gets completely filled and there aren't any air bubbles.
5. When cured, sand flush.

This is great advise and I have found that a turky injector works great and you can find them at your local hardware store. It nothing but a big syring for pumping flavor into the meat of a turky.