Introduction: Rubberband Airplane
how to build a rubberband plane
the plane is made of several plates of foamboard of 50 bij 70 cm 5mm thick and 1mm thick foamboard
Step 1: The Wing
the first step is building the wing
take a piece of foamboard 5mm and lay the side of 70 cm to you and draw lines on 10, 11, 12.5, 16, 18, 21, 21.5 and 23cm from the 70cm side
now cut the top layer of the paper on the 10 and 11 cm line
then pull of this piece of paper but the foam must still be there
then cut the 12.5, 16, 18, 21 and 21.5 cm lines but not completely through
the 12.5 and 16 cm you should carve with a toothpick
the paper between the 18 and 21.5 cm line must also be pulled of
then sand the foam between the 18 and 21 cm line to a flat surface and do this also between the 21 and 21.5 cm line like in the picture
the 23 cm line must be cut complete throughout
now cut of a piece of 2 by 70 cm and glue this between the 12.5 and 16 cm line
now like in the movie fold the wing and glue the piece of 2 by 70 on the lower half of the wing, after this you glue the chamfered edge to the bottom half of the wing and
for the second wing you can use the left over 25 cm of the foamboard
Step 2: The Fuselage
take a piece of foambord 5mm
draw of the 50 cm site a line on 5.5, 6, 11.5, 12, 17.5, 18, 23.5 and 24 cm
cut the 24 cm line completly through
now of this 24 cm site draw a line on 45 cm and cut this completely through
now cut through the 5.5, 6, 11.5, 12, 17.5, 18 and 23.5 cm line but only through the top paper and foam
remove the paper and foam between the 5.5 and 6 the 11.5 and 12 the 17.5 and 18 and after the 23.5 cm
fold the paper like on the picture, put glue between the 5.5 and 6 cm line and fold it back to the tube shape and do this also in the other 4 cuts but 1 at a time
now you have your fuselage
Step 3: The Nose
in my original plane the nose is made of wood because of testing but you can also make it out of foam bord
cut out a piece of 6 by 6 cm
on the back site you glue a piece of 5 by 5 cm in the middle
in this piece you cut a hole of 3 by 3 in the middle like in the picture
now you can make the nose
take a piece of 5 by 3 cm and round of 2 edges with a radius of 2 cm (make 2 pieces)
glue them like on the picture and make it symmetrical
now the outer shell of the cone is a bit difficult
take a piece of 6 by 11 cm
draw a line at 4.5 cm of the 6 cm side and 6.5 cm and cut the upper paper layer
peel of all the paper except the 2 cm in the middle, in the middle of this you have to drill a hole of
4 mm
now glue this piece on the nose foam to the inside and the hole must be in the middle of the nose cone
through this nose you can put the bolt for the propeller and attach it to the rubber band
let the rubber band through the fuselage and make sure you have a couple cm extra at the end
Step 4: End of the Rubber Band
make a piece of 6 by 6 cm
make 2 pieces of 5 by 5 cm
glue on each site of the 6 by 6 a 5 by 5
0.5 cm of each edge
in the middle of this drill a hole of 4mm and put a bold through this and make sure the bold doesn't move any more
attach this to the end of the fuselage and the rubber band now you can test if your proppellor works
Step 5: The Tale
take a piece of foam bord and draw this patern on it (picture1)
cut out the outher lines, from the 0.5 cm zones you must remove the top paper and the foam and fold it to the inside like the fuselage
use the part that you have now for the undersite of the tale
as stabelizers you can use pieces of 1 mm or 2 pieces of 1 mm glued together
the size and the angle you can chose
Step 6: The Finish
the endplates you can make of 1mm foambord or you can make your own form
you can glue the wings on the fuselage but for finding the best weight distribution you can try this with rubber bands crossed over the wings
you can also cover the plane in pvc tape for a cleaner finish
(first cover all parts in pvc tape before glueing together)