How do you move parts around ingame on a locked game in roblox?
Many printers have rubber feeders that grab the paper and feed it. They are about 8 mm diameter, 16 mm high and are in the shape of a right circular cylinder. Exact dimension varies from one model to another. The rubber hardens with time and tends to change its dimension - causing multiple paper feed. You can buy replacement rollers for many models; check this out for yours. I had a 5 L a long time ago and this fixed it.
Not strong at all. Also, PVC is not UV protected. The sun will weaken it over a few months. You can make one as a prototype for a welder to use for a steel version.