Now that the exterior framework is complete (more or less), it’s time to start work on the interior. My first goal for the interior is to complete the “girth shelf” – a 3/4″ shelf that circles the entire crew compartment at a fixed height but with various depths. I consider this super-important to completing the interior because it will serve as a nice fixed reference for the remaining stuff in an environment with really strange geometry.
I started at the back with the shelf dividing the halves of the Lower Equipment Bay (LEB). It’s nice and straight and attached at a number of fixed points, and would be a great way to help ensure the accuracy of the rest of the shelf. I cut four 2×4 boards with 15-degree angles to support the center. I attached these to the floor with brackets, spaced at just under 22″ apart. This dimension comes from the width of the Inertial Monitor Unit (IMU)/navigation station’s mounting points, which fits into the upper center of the LEB. I cut two 1-foot sections from a sheet of 3/4″ MDF, then cut a 45-degree piece off of each with a 32-degree bevel so it would sit flush against the exterior supports. I gave the inward-facing edges a 1/8″ roundover to get rid of any sharp edges, and installed dowels in the center edges to keep them flush. I mounted the completed shelf onto the four supports, then installed hurricane ties to connect the angled/beveled edges to the exterior support.
I measured and cut two more 2x4s to fit between the shelf and the ceiling, and mounted them with brackets.
More to come!