Welp, eight feet of 1.5 inch diameter transparent acrylic tubing cost me $52, including shipping. I've instructed that it should arrive precut into sixteen 6 inch long sections. Overkill for what I need but there was a minimum on the amount you could order.This means the sky (or budget) is basically the limit on potential future expansions. I can add damn near anything with at least one flat surface, made of transparent material, and watertight or easily made so.
I still need materials to build the platform to which the enclosures will be bolted. I'm thinking erector set. They have large panels govered in a grid of holes with standard sized bolts, perfect for building exactly the size and shape platform I need. I'll position the enclosures, drill holes in their floors, bolt them down and then seal the area where the bolt passes through the enclosure floor with silicone sealant.
I'll be bolting them down after I dremel-out the holes for the tubes, but before I actually add the tube and glue/seal it into place. My reasoning being that if I fix the tube to the two enclosures with glue and sealant beforehand, when I bolt them down, forcing them flat like that might crack the seal where the tube passes through the enclosure wall. Better to add the tubes when they're already bolted down and let the glue dry, then add sealant.
So, a general purpose erector set with plenty of large panels, and a dremel. Can anyone suggest good candidates for either?