Step 1. Employ a straightedge and a pen to draw lines where the
fiberglass cloth will be placed. Use two layers of cloth with the top
layer overlapping the lower layer by 2 inches. Draw the lines 7 and
9 inches beyond the fuselage at the LE and 3 and 5 inches beyond
the fuselage at the TE. This is the most effective shape for the
best reinforcement.
Step 2. Cut the pieces of cloth that will align with the drawn
lines and extend beyond the LE and TE by roughly 1 inch.
Choose the cloth weight depending on your model’s size and
weight. I use 2-ounce/square-foot material for my 2-meter
Pattern models.
Step 3. Select your favorite finishing resin/epoxy. Obtain a roll of
Saran Wrap, a spatula for mixing, a paste brush, a mixing cup, and
a plastic credit card. I use finishing resin because it is simple to
sand when necessary.
Title
By
ONE-PIECE WINGS must have their center-sections reinforced
with fiberglass cloth to provide enough strength to survive the
stresses of aerobatic maneuvers. This step-by-step procedure shows
how to reinforce the wing to obtain that strength while providing a
smooth surface that is necessary for film coverings. I have used this
technique on my 2-meter RC Aerobatics, or Pattern, models.
After you have gone through the process with one wing,
repeat all the steps for the other side of the wing. Careful
attention to each step of this technique will provide you with a
tough center-section and an even and light surface. MA
Bob Noll
[email protected]
Step 4. Thoroughly mix an ounce of resin and pour it onto the
wing surface.42 MODEL AVIATION
Step 5. Spread the resin evenly using the paste brush.
Step 6. Carefully place the cloth on top of the resin-coated wing.
It’s nice if you can recruit another pair of hands for this
operation.
Step 7. Use your fingers to smooth the cloth as much as
possible. I advise you to wear rubber gloves for this operation. If
you will be using a second sheet of cloth, place it on the wing at
this time.
Step 8. Use the paste brush to add resin as necessary so that
there is an adequate amount to impregnate all the cloth. Apply
more resin if necessary to ensure that all the cloth is
saturated.
Step 9. Carefully place a sheet of Saran Wrap over the cloth. This
is to avoid large wrinkles. Small wrinkles can be removed in the
following steps.
Step 10. Use your hands to make sure the Saran Wrap is in
contact with the cloth in all areas.
February 2006 43
Step 12. Work excess resin to the edge of the cloth and remove it.
Be careful not to stretch the Saran Wrap.
Step 14. After cutting excess cloth away from the LE and TE, use
a sanding tool to ensure a nice, square TE. Sand the cloth at the
LE to shape.
Step 15. Use the sanding tool to carefully go over the surface if
imperfections occur, but do not sand through the cloth.
Step 11. Drag the plastic card—firmly but carefully—over the
surface to work out any bubbles and ensure contact between the
cloth and wing sheeting.
Step 13. Remove the Saran Wrap after the resin has cured.
02sig2.QXD 12/22/05 11:21 AM Page 43
Edition: Model Aviation - 2006/02
Page Numbers: 41,42,43
Edition: Model Aviation - 2006/02
Page Numbers: 41,42,43
Step 1. Employ a straightedge and a pen to draw lines where the
fiberglass cloth will be placed. Use two layers of cloth with the top
layer overlapping the lower layer by 2 inches. Draw the lines 7 and
9 inches beyond the fuselage at the LE and 3 and 5 inches beyond
the fuselage at the TE. This is the most effective shape for the
best reinforcement.
Step 2. Cut the pieces of cloth that will align with the drawn
lines and extend beyond the LE and TE by roughly 1 inch.
Choose the cloth weight depending on your model’s size and
weight. I use 2-ounce/square-foot material for my 2-meter
Pattern models.
Step 3. Select your favorite finishing resin/epoxy. Obtain a roll of
Saran Wrap, a spatula for mixing, a paste brush, a mixing cup, and
a plastic credit card. I use finishing resin because it is simple to
sand when necessary.
Title
By
ONE-PIECE WINGS must have their center-sections reinforced
with fiberglass cloth to provide enough strength to survive the
stresses of aerobatic maneuvers. This step-by-step procedure shows
how to reinforce the wing to obtain that strength while providing a
smooth surface that is necessary for film coverings. I have used this
technique on my 2-meter RC Aerobatics, or Pattern, models.
After you have gone through the process with one wing,
repeat all the steps for the other side of the wing. Careful
attention to each step of this technique will provide you with a
tough center-section and an even and light surface. MA
Bob Noll
[email protected]
Step 4. Thoroughly mix an ounce of resin and pour it onto the
wing surface.42 MODEL AVIATION
Step 5. Spread the resin evenly using the paste brush.
Step 6. Carefully place the cloth on top of the resin-coated wing.
It’s nice if you can recruit another pair of hands for this
operation.
Step 7. Use your fingers to smooth the cloth as much as
possible. I advise you to wear rubber gloves for this operation. If
you will be using a second sheet of cloth, place it on the wing at
this time.
Step 8. Use the paste brush to add resin as necessary so that
there is an adequate amount to impregnate all the cloth. Apply
more resin if necessary to ensure that all the cloth is
saturated.
Step 9. Carefully place a sheet of Saran Wrap over the cloth. This
is to avoid large wrinkles. Small wrinkles can be removed in the
following steps.
Step 10. Use your hands to make sure the Saran Wrap is in
contact with the cloth in all areas.
February 2006 43
Step 12. Work excess resin to the edge of the cloth and remove it.
Be careful not to stretch the Saran Wrap.
Step 14. After cutting excess cloth away from the LE and TE, use
a sanding tool to ensure a nice, square TE. Sand the cloth at the
LE to shape.
Step 15. Use the sanding tool to carefully go over the surface if
imperfections occur, but do not sand through the cloth.
Step 11. Drag the plastic card—firmly but carefully—over the
surface to work out any bubbles and ensure contact between the
cloth and wing sheeting.
Step 13. Remove the Saran Wrap after the resin has cured.
02sig2.QXD 12/22/05 11:21 AM Page 43
Edition: Model Aviation - 2006/02
Page Numbers: 41,42,43
Step 1. Employ a straightedge and a pen to draw lines where the
fiberglass cloth will be placed. Use two layers of cloth with the top
layer overlapping the lower layer by 2 inches. Draw the lines 7 and
9 inches beyond the fuselage at the LE and 3 and 5 inches beyond
the fuselage at the TE. This is the most effective shape for the
best reinforcement.
Step 2. Cut the pieces of cloth that will align with the drawn
lines and extend beyond the LE and TE by roughly 1 inch.
Choose the cloth weight depending on your model’s size and
weight. I use 2-ounce/square-foot material for my 2-meter
Pattern models.
Step 3. Select your favorite finishing resin/epoxy. Obtain a roll of
Saran Wrap, a spatula for mixing, a paste brush, a mixing cup, and
a plastic credit card. I use finishing resin because it is simple to
sand when necessary.
Title
By
ONE-PIECE WINGS must have their center-sections reinforced
with fiberglass cloth to provide enough strength to survive the
stresses of aerobatic maneuvers. This step-by-step procedure shows
how to reinforce the wing to obtain that strength while providing a
smooth surface that is necessary for film coverings. I have used this
technique on my 2-meter RC Aerobatics, or Pattern, models.
After you have gone through the process with one wing,
repeat all the steps for the other side of the wing. Careful
attention to each step of this technique will provide you with a
tough center-section and an even and light surface. MA
Bob Noll
[email protected]
Step 4. Thoroughly mix an ounce of resin and pour it onto the
wing surface.42 MODEL AVIATION
Step 5. Spread the resin evenly using the paste brush.
Step 6. Carefully place the cloth on top of the resin-coated wing.
It’s nice if you can recruit another pair of hands for this
operation.
Step 7. Use your fingers to smooth the cloth as much as
possible. I advise you to wear rubber gloves for this operation. If
you will be using a second sheet of cloth, place it on the wing at
this time.
Step 8. Use the paste brush to add resin as necessary so that
there is an adequate amount to impregnate all the cloth. Apply
more resin if necessary to ensure that all the cloth is
saturated.
Step 9. Carefully place a sheet of Saran Wrap over the cloth. This
is to avoid large wrinkles. Small wrinkles can be removed in the
following steps.
Step 10. Use your hands to make sure the Saran Wrap is in
contact with the cloth in all areas.
February 2006 43
Step 12. Work excess resin to the edge of the cloth and remove it.
Be careful not to stretch the Saran Wrap.
Step 14. After cutting excess cloth away from the LE and TE, use
a sanding tool to ensure a nice, square TE. Sand the cloth at the
LE to shape.
Step 15. Use the sanding tool to carefully go over the surface if
imperfections occur, but do not sand through the cloth.
Step 11. Drag the plastic card—firmly but carefully—over the
surface to work out any bubbles and ensure contact between the
cloth and wing sheeting.
Step 13. Remove the Saran Wrap after the resin has cured.
02sig2.QXD 12/22/05 11:21 AM Page 43