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  1. Gerry, great article. What do you do with the edges of the control surfaces e.g. glass them or just resin them?
    TIA,
    Steve

    1. Depending on the size Steve, I’ll pull the cloth down around the edges and glass them. The lighter cloths are easier to do this with. I keep any overlap to a minimum and sand where necessary. If they are really large surfaces, consider doing the glassing in sections; similar to the approach you’d use when laying down monokote. I’ll start with the trailing edge, where ailerons and flaps meet, and glass that edge first. Trim and sand keeping the edges square. Then lay down the top and bottom panels, pulling the glass just over the layer on the edge.

  2. I’m very surprised that you’re using a finishing resin to bond that glass to wood, Z=Poxy finishing resin is NOT a structural resin, therefore not the best choice for bonding the glass to the wing. That product is meant to fill the weave AFTER you bond the glass with their 30 min epoxy, or equivalent STRUCTURAL epoxy. WEST systems is by far the best out there and has a variety of hardeners you can use, depending on your working time preference.

    Keep your fingers crossed that your plane doesn’t suffer wing failure mid-flight.

  3. Great how to article.

  4. Envious of the Giant Hellcat! Great model.

    I’ve used Z-Poxy many times and never had a problem. Great stuff.

  5. Nice article. You mentioned using alcolol “full strength” when mixing the coating layer. How much %age of alcohol do you add to the resin as you added 5-10% initially when laying down the cloth.
    Thanks, Bill

  6. Another option that could be mentioned is to follow the directions in the article above (well done Denny) but when you resin your first coat, lay peel ply polyester over the first coat of resin before it cures. Once cured, pull off the peel ply and you have a beautilfully prepared surface for primer will little to no sanding. Ready for primer with no second coat. There are plenty of “how to” videos about peel ply on Youtube. Give it a try as an alternative. It saves weight with no second coat of epoxy or extra sanding.

  7. Regarding. the use of alcohol: Standard rubbing (isopropyl) alcohol is 30% water. If available, get 90%, rather than the more standard 70%.

    Or if over 21, “Everclear” from the liquor store is 95% ethanol. Don’t laugh, it works.

  8. Great How to thanks 😀

  9. Any consideration of using Polycrylic from Minwax? I have used it before and it seems to be much easier and less toxic fumes.

  10. Hi Gerry, great article for sure. What has caused the different colour bands on the wing trailing edges at the point the control surfaces meet the wing? I hope you will continue this series and include the marking for the rivets, panel lines applying decals or painting the frame after the primer has been applied. I am hoping to start a TF Giant Scale P51 soon.

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