Main Capsule – Problems with the Old System

This entry is part 1 of 3 in the series Main Capsule

Last year, we used a standard Polycase™ waterproof enclosure to house our electrical stack and keep water out. This capsule came with four brass inserts in the corners to press the capsule into the O-ring. Despite working initially, wear and tear from a year of use eventually degraded the plastic-brass bond, causing the brass inserts …

Main Capsule – Design Candidates

This entry is part 2 of 3 in the series Main Capsule

We have several candidates right now for a permanent solution to our capsule problem: We ended up choosing the metal plate solution for several reasons. First, it was easiest: ordering a metal plate is relatively cheap, and we have experience making similar designs in-house. Moreover, this can be easily prototyped out of cheaper materials like …

Main Capsule – Metal Plate

This entry is part 3 of 3 in the series Main Capsule

The first step to secure the metal plate was to drill four additional holes into our stack plate. These will allow four additional standoffs to be mounted to hold the plate securely onto the capsule. We used a laser-cut jig to line up a hand drill and manually drilled each one.  Then, we cut four …