Personally, I would avoid Tuperware and use a Rubbermaid container. Rubermaid has a far better seal since it's a tounge over tounge design.
And not any Rubbermaid off the shelf type either. The most desired for your application is the serv'in saver line. Ir's the best seal, thickest lid for holes and grommets and sturdy too.
You will need at least the 6 cup size or better for reservoir storage.
Get a few nice sized rubber grommets, poke the holes even spaced in the lid, press in the rubber grommets, then the tubing, and the reservoir is good to go. Depending on the application, you may need plumbers tape to help seal the tubing to the grommets. Most of the time not.
Instead of grommets, you can make holes in the lid for fittings as well. Use a strong epoxy weld (JB weld) for that type of work. Then, on the inside of the lid, you will need a leg of tubing to draw the coolant out on one of the fittings.
I've made reservoirs out of PVC pipes and caps, 1-gallon size glass pickle jars, and Rubbermaid containers.
The reservoir part isn't hard. It's routing the tubing with zip ties to prevent the tubes from popping out.
Our friends at V-H has a DIY instructions found here. You can adapt the Rubbermaid to this.
http://www.virtual-hideout.net/guide...ir/index.shtmlEdited by bmaverick - 7/3/08 at 10:51pm