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Old Sep 22, 2012, 02:53 PM
Illegitimi non carborundum
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Patching damaged sheeting - a brief tutorial

While repairing a badly damaged wing I've had several opportunities to patch holed sheeting. Here's my process.

1. Mark a simple geometric shape around the damaged area




2. Trim away the excess balsa, beveling the cut in the process




3. Using the side of a pencil lead, shade the opening onto a piece of paper




4. Take a minute to check the required grain direction for your patch

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Old Sep 22, 2012, 02:54 PM
Illegitimi non carborundum
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5. Trace the outline onto the patch




6. Cut out the patch




7. Bevel the bottom edges of the patch



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Old Sep 22, 2012, 02:55 PM
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8. Glue the patch in place




9. Secure the patch while it's curing






10. Once it's cured, sand the patch flush if necessary.

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Old Sep 28, 2012, 09:00 PM
Illegitimi non carborundum
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Next steps...

Mix some Deluxe Materials Model Lite filler with water to create a paste just a little thicker than water.



Apply some filler to a palette knife and dab it into the cracks.



Flatten it out with the palette knife.



Note that this mixture sets well and is very easy to sand, so applying a little extra is no big deal.

A couple of other products I'm using, both from Lee Valley Tools:

35K09.10 - Set of 12 Palette Knives in Case
99W73.38 - Sanding Sponge Assortment, pkg. of 10
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Old Sep 29, 2012, 04:51 AM
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Looks good so far. It's always nice to take a plane that most people would write off and make it look good as new... and sometimes even better. Filler and sandpaper are one heck of a combo
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Old Oct 01, 2012, 09:29 AM
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As mentioned, this filler is very easy to sand.



It did a great job filling the gap on the patch, and it fills small scratches very well too.

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