Previously, I had attached white ABS profiles to the outside of the hinge leaves, which are screwed to the door, so that the drill holes for the wires are hidden and the hinges have a clean end edge. I have now made cutouts in this white ABS for the screw heads. I also added a dot of ultra-strong epoxy to the sides of the knuckles to hold the splitted and shortened pins in place and have a flat surface for the silver spray paint.
Wires through the hingesSection titled Wires through the hinges
Before I could permanently attach the hinges to the door, I had to run the wires through the hinges that I would need for power and data transmission from the main shell to the door. I needed 3 data lines for the touch sensor breakout, 1 data line for the NeoPixel LEDs, and 2 wires for +5V and GND. Since I could run 4 wires through each hinge, giving me the option of adding 2 more wires, I decided to add a small push button below the EMRG light. The wires I used are particularly flexible copper strands.
Attach the hinges to the doorSection titled Attach the hinges to the door
I ran the cables through the center holes in the recess for the hinges and screwed the hinges to the door. I then applied ultra-strong 2-component epoxy to close all the gaps and permanently attach the hinges. I tried not to get too close to the knuckles with the glue so that the hinge blades would move freely.
Sand, fill, repeatSection titled Sand, fill, repeat
After the glue was dry, I sanded the hinge side smooth. In the process, I inevitably damaged the paint on the hinge knuckles, which means I had to touch up here again afterwards. After sanding, I applied a coat of filler/primer spray, sanded again, applied filler again... until the hinge side looked good to me.
It took quite a while to get the side with the hinges ready for painting it silver (didn't take photos of all intermediate steps). When spraying the knuckles silver, I tried to apply only a very thin layer of paint, and I moved the knuckles while the paint was drying to prevent the paint from sticking between the knuckles.
Spray painting silver metallicSection titled Spray painting silver metallic
While working on the hinge side, I also sanded and painted the left, right and back sides of the door panel again to avoid visible seams between the different layers of paint. I finaly spray painted the silver metallic color and clear coat finish. A few minor blemishes were left, but the hinges were essentially finished:
Time to install the electronics...
Related articlesSection titled Related articles
- 2021 May 05: Preparing the hinges (version 2) and door
- 2020 Jan 12: Preparing the hinges – Version 1 (wires through the hinges)