Definitely go with latex tubing. I tried silicone tubing and it was surprisingly rigid. My servo couldn't handle it.
The best would be if I could find a way to make silicone air tubing work because most aquarists have a bit or at least know where to get it. If I can't get that working, I'll have to switch over to latex. It looks like Pololu actually makes their own version of this motor
that can put out 100 oz*in at 6V, and can be driven up to 12V. I wonder what the torque is at 12V? It also says that there is a clutch that keeps it from stripping gears, so there will be a maximum amount of torque we can expect from this thing.
I was doing some dismantling of peristaltics so here are few pictures, maybe youll get some ideas. BTW , im also cnc operator, wouldnt it be cheaper to produce housing on cnc, rather than mold with plastic?
Thanks for the pics. They should be useful.
I believe for hobby quantities, casting polyurethane in a silicone mold is cheapest. I've done a bit of that with robot parts
. For larger quantities, CNC is best. For really large quantities, injection molding would be the way to go.
I pushed off grocery shopping 'til tomorrow, so I updated the model a bit:
For a size comparison, each body is about 2" X 2".
I just got Solidworks, so I am having a lot of fun learning how to use it. Can you tell?
Should I work on reducing the cost as much as possible? For example, would it be worth it to use 2 sets of bearings instead of 3 to save $2? Should I make the molded parts use as little polyurethane as possible to shave off another $0.50 if I can, or is that not worth the effort?