Building
I will tell you how I make the planes in a few big steps.

Design
First weigh the equipment you are going to use. After this determine the weight of the plane. In which 65 gram is very light and 100 gram is the maximum weight of the airplane without any equipment. So if you want a wingload from 10gr/dm2 with a total weight of 180 gram the wingsurface should be 18dm2. With this you can determine the span and width of the wing. After this you can design the rest of the plane.

Step 1
First I cut the pieces out of 3mm Depron.
Before you glue it all together you can give it some color. I use Waterproof Edding 2000 pencils. You can also use paint on water basis but keep the weight down!

Step 2
I start with the main parts of the fuselage. Keep it straight and square. Before bending the round parts I first tape the outside with clear packing tape so it won't break. Bend it around a curve, like example a kitchen  blade. You can also use a heat gun, but be careful that it won't melt. After bending the back fuselage I glue the piece (F2) and line up the end off the fuselage so it will stay straight. After this I glue the piece (F1)  and the two front half of the fuselage together. It bends easier if you already cut the holes for the rudder and elevator before bending and gluing the fuselage together.


Step 3
Now I measure the elevator in line with the fuselage before I glue it in place and after this the rudder. Dubbel check the measurements to be sure it is straight because it will affect it's performance.

Step 4
Before you can make the wing first cut out the whole wing. The up and down side together at the leading edge. Tape the leading edge outside  with clear packing tape. Turn the wing over and mark the main spar position on both sides. Sand down the trailing edge so if the two sides come together the distance is 3mm. Use a ruler to make a fold on the leading edge line in the inside of the wing so you can bend the wing. Glue the main spar in place on one side of the wing. After drying, glue the main spar and trailing edge together. Check the alignment and fix this position with some weights. For the glue I use white glue because this give you a change to make adjustmance before it is hard.


Step 5
Glue the wing in place and sand the curve if needed in the fuselage so it will fit tight. Before gluing it in place check the alignment on the fuselage by measure the length to the tail by both sides of the wing and check the horizon of the wing. This is very important because again it can effect the flying characteristics.

Step 6
I use a little piece of 3mm Balsa to secure the landing gear to the plane. I make a 1.2mm slot into the Balsa piece and glue it on both sides into the fuselage. Just bend a landing gear out of 1.2 mm piano wire and push this in the slots, if necessary glue it. The wheels are made out of pipe isolation 40mm. Within a round piece of 3mm Balsa. Glue at the center an outside bowden cable for the hub. Fix the wheel on the landing gear by using a silicon tube piece. This way you can make wheels from 3-5 gram.


Step 7
For the battery entrance I use a little lock (see picture). All made out of Depron but for the lock I used 3mm Balsa wood. This way you don't have to use tape etc. and can make a quick battery pit stop.


Step 8
For control horns you can cut a strip of 4mm width out of an old CD. Sant down the surface so it will be transparent and it will glue better. For extra strenght you can also glue a little strip across the rudder.
Tape the rudder with tape on the plane. You can also use little hinges and glue them into place. I personaly like the little hinges because the total weight of all the hinges are below 1 gram and they are so much better than tape.
For linking the control horns to the servo I use a carbon rod with 0.8mm piano wire. Use a little heatshrink to attach the 0.8mm pianewire to the carbon rod. Try to place the servo's near the rudders for direct steering but keep a close look at the C.G.


Step 9
Build in the equipment for the controls of the plane. I used double side tape for the servo's, receiver and electronic speed controller. Tape the inside from the fuselage where you going to place the servo's with clear packing tape so that you can get the servo's out when needed without breaking the Depron fuselage.

Your plane is now ready for center of gravity check and test flying.
Start with minimum movement on the ailerons, like 10mm up and 8mm down.

The material I used are
Depron (black) for most part of the plane.
Balsa wood
Carbon rod 2mm
Steel 0.8mm - 1.2mm
Tube with inner diameter to fit the steel steering rod

The tools I used are
Instant glue.
White glue
Epoxy.
Sharp knife
Steel ruler
Square hook
Clear packing tape

For coloring the plane I used
Edding 2000 pencils

Depron
For the Netherlanders I bought my Depron by 't Parket Huys in Hilversum. 

Drawings
The drawings are free to download. The planes are for anyone with enough insight and experience to make a good end result. How you make the steering mechanism is your own choice. The drawing shows my idea on how to install the equipment. I made the design because I like to experiment. Because I'm not a professional designer, I used standard values in the design. I will take no responsibility at all for flaws in the design and there possible consequences.