Telescope

thingiverse

Create a telescope using 3D printing technology by attaching two small lenses onto a cardboard tube. Materials required include a cardboard tube, two lenses, glue and a small screw. Begin by printing the parts, then glue one lens into each end of the tube. Cut the tube to match the focus length of the lenses. Next, press the first lens mount into the tube's end, followed by sliding the second tube onto the cardboard tube. Finally, secure it with a small screw near the top of the spiral track. If possible, use a smaller, rigid tube for better results; if not, adjust the models accordingly.