(The End of the Wobbly Noseblock... pg2)
You are now ready to attach the prop and prop
hook. There have been many documented ways of
doing this. However, I prefer to drill a tapered
hole through the nose block, larger at the plug
end and smaller at the front. Then glue a flat
or domed plate onto the front of the nose block,
with a hole the correct size for the prop shaft.
On the back of the nose plug, I insert and glue
an “L” shaped piece of aluminum, with
a hole, again for the prop shaft. This “L”
shaped prop shaft holder can be bent to adjust
the thrust line. (See drawing number 2.)
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TIPS:
- The plastic thickness will vary depending
on how large the model is. The thickness
will also vary how tight the nose block
fits.
- The wooden part of the nose plug may
be eliminated to save weight.
- Be sure to epoxy the second vacuum
formed part to the F1 former. I tried
ambroid and Cya. Both failed due to the
amount of force needed to remove the nose
block.
- If your nose block is just too tight,
either start over or sand the first vacuum
formed part so that it is thinner.
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The Art of Vacuum Forming, Made Simple:
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- Build your vacuum forming tool like the drawing
below. Make it whatever size you think you will
need for the parts that your are going to make.
Mine is 6” x 8” x 3”. Be sure
to seal the inside of the “box”
with silicone or glue.
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- Find some thin plastic. Keep all of the vacuum
formed boxes that your tools and the kids toys
come in. If it was vacuum formed once, you can
use it again. Also the plastic party plates
work great.
- Lay one part of the plastic holder on the
plastic, mark all eight holes, then punch the
holes with a normal paper hole punch.
- Place the plastic between the two plastic
holders, and secure with the bolts and knurl
nuts.
- Place your mold onto the vacuum former.
- Plug the Vacuum Cleaner Crevice Tool into
the hole. Don’t worry, it does NOT have
to be air tight - just snug.
- Hold the plastic holder with a pair of pliers
over the kitchen stove burner. Heat until the
plastic sags. It will shrink first, and tighten
up a lot, which is why you have eight bolts.
Then it will sag. When it is sagging it's ready.
- Turn on the vacuum cleaner, then place the
plastic holder and plastic onto the box. Turn
off vacuum cleaner, turn off the burner.
- Play with it, you will get very good, very
quickly.
- Admire your work, and feel good, and fly
FAC..
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