ASW20 Sailplane (micro glider - flyable)

This is a scaled flyable micro version of the ASW20 sailplane from Schleicher. The model was created to be lightweight and printable in normal PLA.

Because of it's lightweight behaviour it's a little bit fiddly to get it together properly but it's still strong enouth to survive crashes. So please read the Instructions before you build it.

Printing:

Make sure you align the STL-Files flat with the build plate like in the pictures.

The Fuselage and the Nose have to be printed in Vase Mode (0.12mm) for best quality and perfect stability. Make sure you geht your part cooling right otherwise the thin tail section won't print properly because of overheating. Turn Bottom Layers to 1 Layer.

The Wing parts are printed in normal Mode with 0.12mm Layerheight. Make sure that the first layer prints in 0.2mm.

After printing carefully remove the wings from your print bed and make sure not to overbend them.

Assembly

Clean up the parts from any print defects

Testfit if the wings fit inside the fuselage. The reinforcement part of the wing should touch the fuselage. If not, just cut away the parts wich are too big.

When the testfit is ok, put some superglue onto the wings and glue them in place.

Make a testfit if the rudder fits in to the elevator. If not you can take a cutter knife to clean it up a little bit.

After that put the rudder and elevator together and secure them with some CA glue. Try to not use too much glue because of extra weight.

Glueing the rudder/elevator assembly to the fuselage is the hardest part of the build. It works the best if you put one small drop onto the fuselage and temporary secure it. After that you can check the alignement and adjust it properly.

 If it looks fine, just secure the whole thing with more superglue.

To make the whole thing fly you have to add weight to the nose and adjust the center of gravity. For me a 4,5mm steelball did the trick. You can temporary secure the nose to the rest of the plane with some tape and check it's flight properties. 

For checking the center of gravity you can balance it on two screws. The COG should be at ⅓ of the wing measured from the front.

if it does'nt fly properly you can also try to give it a little bit of lift by bending the elevator up.

If it flys, you now can finally glue the nose to the rest of the sailplane.

Have Fun!