Thread: Build Log Yardbird!!!!!
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Old Dec 20, 2006, 12:26 AM
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Hot Dawg Glider Pilot
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United States, TX, Weatherford
Joined Nov 2002
8,010 Posts
Spar complete

Should look like this before proceeding... note the crossed pins for a little glue pressure...

Take a look at the sanding block... it's aluminum, 1/2 X 3 X the length of a piece of sandpaper... I use it because I know it's straight, hard, and will give me the desired result. A wood block isn't precise enough for my taste. Again, and I stress this, use only the weight of the block for pressure when sanding something like a sheeted wing. If you use a lot of force, you'll end up with the sheeting sanded almost all the way through at the ribs, but almost full thickness of sheeting in between. This is because the unsupported sheet between the ribs will move down. The thinner it gets over the ribs, the more the middle will move down away from the sand paper... and don't ask me how I know this...
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