After many frustrating attempts at making bath bombs by hand, I found a youtube video of a guy selling a machine that makes them utilizing a pneumatic cylinder. (the b3 bath bomb machine -- psE4LXcIHyU) While I have no doubt that his machine is wonderful, I also thought I could probably build a similar one for, well, a fraction of the cost. Which is needed for my student-type budget When I first sat down, I thought it would be a simple 5 minute parts list and a grainger order, but after (probably OVER) thinking it, I'm paranoid about the details--so after re-reading all of the fluids and pneumatics chapters, then thinking about pharmaceutical tablet presses and reading everything from patent applications to industry guides on industrial ceramics--in GERMAN!!, I think I'm making a mountain out of a molehill. Can someone help me? I actually bought the mold (die) itself, from the willow company (it is split into a top and bottom half, and supposedly has threads on the top. I would be so, so grateful, if anyone could help with suggestions/help/ideas for :a suggested "buy" list (double action cylinder? 6 in travel? how does one do the 2 button safety trigger?), how critical doing the math is first (or does this look like a trial/error could work) and if anybody has any creative ideas to make things simpler. I'm sorry if that sounds like a lot to ask--and doubly sorry for my terrible weekend grammar--I just feel so overwhelmed! it seemed like such a simple thing when I started, and now seems well, overwhelming. But, then I found a post on here about a guy looking to make a snow brick machine, and he got wonderful advice and feedback, so now I'm hopeful again. If you can't help, that is okay too, but thank you in advance to anyone/everyone that can.