I have not actually finished my cam mechanism yet, but I can still talk about how it was for me so far. I am making cam A. I am finding this project a little bit hard but mostly easy. The hard part about it is that it takes a while, and keeping track of all the pieces. But overall, building is not too hard. It can be a little bit boring, but not hard. All it really is, is cutting and glueing. Sometimes the gluing can be a bit hard though, if you are trying to glue a hard-to-reach place on the cam. I think I am doing this right so far, and I think it will work when I am finished.

We have just started talking about atoms in technology. Atoms are tiny particles that are everywhere. Everything and everyone is is made out of atoms. Atoms were discovered by Albert Einstein. He got the idea that everyone was made out of the same substance, atoms in 1905, with the theory of relativity. At first, no one believed him but he proved the existence of atoms by doing an experiment.