Anything handy I can share ...
Joints
Doubling the length of balsa sticks by joining them, can be done perfect and easy too. The trick is not to sand the sloped ends seperately, but all in once. The length of the slope has to be ten times the stick's thickness.
The stick ends are positioned perfectly in quite an easy way by holding one stick between two rulers; hold a piece of tape ready; gently shove the other stick up to the first (experiment for the right amount of force) and apply the tape. Make two cuts in the tape sides at the stick ends, before applying the tape to the stick sides, then you can open the gap to fill it with glue.
Lay the sticks on a flat surface. The tape under the joint has some thickness, so add tape left and right from the joint as well. Fill the gap with glue; close it and wipe off excess glue; make sure you hold the sticks flat to the surface; apply clamps ... that's it. Remove tape when dried.
Perfect joints ...
