AJ-2 Construction Revisited
#52
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RE: AJ-2 Construction Revisited
If you happen to cut too deep into the surface and damage the hinge, here is how to fix it.
1) Cut a piece of 2 ounce fiberglass cloth on the 45 degree angle.
2) Mix a small amount of finishing epoxy and apply it to the damaged surface.
3) Place the fiberglass cloth on.
4) Apply a piece of plastic wrap over the top of the patch.
5) Pull it tight and tape it in place.
1) Cut a piece of 2 ounce fiberglass cloth on the 45 degree angle.
2) Mix a small amount of finishing epoxy and apply it to the damaged surface.
3) Place the fiberglass cloth on.
4) Apply a piece of plastic wrap over the top of the patch.
5) Pull it tight and tape it in place.
#54
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RE: AJ-2 Construction Revisited
Test fit the tail surface with screws prior to gluing on the tail.
Double check the incidence of the wing and tail.
The tail surface was then glued on with 30-minute epoxy. The tail was upside down to allow the glue to flow into the glue joint,
Double check the incidence of the wing and tail.
The tail surface was then glued on with 30-minute epoxy. The tail was upside down to allow the glue to flow into the glue joint,
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RE: AJ-2 Construction Revisited
The flexible cable was glued in place with Shoe Goo. This is vibration resistant and does a good job of holding parts in place.
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RE: AJ-2 Construction Revisited
The rudder is being covered with 2 ounce fiberglass cloth and finishing epoxy.
This is later placed between layers of peel ply and placed in the vacuum bag.
This is later placed between layers of peel ply and placed in the vacuum bag.
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RE: AJ-2 Construction Revisited
I began by washing the fiberglass parts with shampoo and water to remove any release agent. It was allowed to dry.
The fuselage was then lightly sanded going down to 220 grit paper.
Larger holes were then filled with polyester filler (Bondo). This stuff dries in a few minutes. Sand it smooth and then go down to 220 grit sandpaper.
The fuselage was then lightly sanded going down to 220 grit paper.
Larger holes were then filled with polyester filler (Bondo). This stuff dries in a few minutes. Sand it smooth and then go down to 220 grit sandpaper.
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RE: AJ-2 Construction Revisited
Sand the surface with 220 grit sandpaper to remove the majority of the lightweight Spackle.
The goal is to leave the surface smooth and ready to prime. The Spackle does an excellent job of filling the pinholes.
The goal is to leave the surface smooth and ready to prime. The Spackle does an excellent job of filling the pinholes.
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RE: AJ-2 Construction Revisited
I used white Klasskote epoxy primer on the models.
Approximately 4* ounces of primer was mixed per model. *Note: If done again I'd suggest 5 to 6 ounces per model.
The primer was thinned with 1 part thinner per part of primer. The Klean-Strip Lacquer Thinner worked fine to thin the primer.
Approximately 4* ounces of primer was mixed per model. *Note: If done again I'd suggest 5 to 6 ounces per model.
The primer was thinned with 1 part thinner per part of primer. The Klean-Strip Lacquer Thinner worked fine to thin the primer.
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RE: AJ-2 Construction Revisited
Lightly wet sand the primed surface of the model.
Use a sanding block on flat surfaces and a loose sheet of wet-and-dry sandpaper on other surfaces. I used 400 grit wet-and-dry sandpaper.
Use a sanding block on flat surfaces and a loose sheet of wet-and-dry sandpaper on other surfaces. I used 400 grit wet-and-dry sandpaper.
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RE: AJ-2 Construction Revisited
Here is what the model looked like after wet sanding.
I am planning to paint the model yellow. Yellow tends to be transparent and therefore the surface must be perfectly white with no grain or imperfections, or they will show up after painting.
I took the opportunity to fill a few more pinholes. Another coat of primer will be applied.
I am planning to paint the model yellow. Yellow tends to be transparent and therefore the surface must be perfectly white with no grain or imperfections, or they will show up after painting.
I took the opportunity to fill a few more pinholes. Another coat of primer will be applied.
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RE: AJ-2 Construction Revisited
Here are my spray gun and materials used for the color coat. The spray gun is available from Harbor Freight for about $15.
I mixed about 5 ounces of paint (acrylic enamel and hardener) per model.
The final mix was about 3 parts paint and 1 part reducer.
I mixed about 5 ounces of paint (acrylic enamel and hardener) per model.
The final mix was about 3 parts paint and 1 part reducer.
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RE: AJ-2 Construction Revisited
A light coat of paint was applied first and after a couple minutes the remaining coats were applied.
The model was initially white and the yellow covered it great.
FYI - I've tried painting yellow over darker colors and had less that perfect results. [&:]
The model was initially white and the yellow covered it great.
FYI - I've tried painting yellow over darker colors and had less that perfect results. [&:]
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RE: AJ-2 Construction Revisited
After about 24 hours you can wet sand the surface to remove dust, runs, etc.
2000 grit wet-and-dry sandpaper works fine for this service.
2000 grit wet-and-dry sandpaper works fine for this service.