Extra Projects & Event Page's

January 11, 2021

R4-D4 dome lid modification - part 4

 Found some steel washers the right size to fit in the recesses of the servo holder hinge side. These I fixed in place with some Araldite glue. I chose to place these inside rather than on the lid itself, so that the magnets once glued to the underside of the lid would locate the hinge in the correct position.

Magnetic hinge, servo holder

This is the redesigned holder, which also has a recess to allow a small threaded retainer to be located to have the pivot hinge pin secured in place.

Here’s a test layout picture before it was glued in place.

Lid hinge positioned

Next, was gluing the first washer in place on the actual lid panel. I applied a strip of masking tape between the magnet already installed in the hinge and the washer which was being held by it. I then mixed up the glue and applied it to the face of the washer, before clamping it into position.

Hinge magnet location washer being glued in place

Washer once glued into place

After testing I found that there was a bit too much play with the locating part of the lid panel magnet. So had to go back and have a re-design......again lol.

This new design does away with this magnet/washer and will hopefully just be fitted directly to the lid panel.

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