Folks,
thanks for all the discussion and ideas around improving the mounting of the aluminium lid to the clear acrylic back cover.
This has motivated me to release the attached SVG file for people with access to a laser cutter or acrylic cutting service.
The file includes outlines for:
- the whole back cover (a fraction under 429 x 172 mm - so fits within a 600 x 300 bed)
- 8 reinforcing pieces (inspired by Thomas Ganter's 3D printable parts)
- The pieces are in pairs for each corner.
- The pieces for the 2 bottom nuts/corners are different to the pieces for the 2 top nuts/corners owning to the different locations of the nuts.
- Each pair has in "inside" piece and and "outside" piece
- The "outside" piece for the corner nearest the ESP32-PICO-KIT is modified to avoid the space for the USB connector.
Thanks goes also to John Kennedy for testing out the design (so quickly too!).
I won't be able to supply these reinforcing pieces (or include them in the kit for the foreseeable future) as in the current conditions I don't have access to a laser cutter or acrylic cutting service myself.
So I provide the SVG files here for people to serve themselves as best they can.
In my experience the best adhesive to use is acrylic cement (but this has hard to buy in small quantities).
Super Glue will work (structurally) but runs the risk of clouding the acrylic and looking messy, but John's experience wasn't at all bad with Super Glue.
*** NOTE *** John also found that you have to capture the nut in-place BEFORE you glue the second piece of acrylic for any given corner. ie. if the acrylic is all glued down then you can't get the nut in after-the-fact.