I was inspired to make a small "glass" enclosure to house something that appeared to be a high voltage electrical component after looking at pictures of high voltage relays online. These devices seem to usually be housed beneath a squarish glass dome which is held in place by a nut at the top. I decided to try to make something similar. The starting point was a small clear box made of a hard plastic which had held a die-cast car. The box had right look and had entered my junk box after the die-cast car was removed. The other components I used where a long machine screw, a nut and a number of other spacers and washers obtained courtesy of my great uncle's hoarding.
The box already had a small dimple in the top presumable from casting it. This made it very easy to locate the centre to drill out a hole. The top of the box was covered in masking tape to prevent scratches. To drill out the hole I worked slowly up through drill bit sizes from 0.5mm to 4mm holding the drills in a pin vice. Due to the hard brittle nature of the plastic cover I did not use a power drill, and increased drill bit sizes in half mm intervals. After drilling out the hole burrs were removed with a needle file. Then the machine screw and several washers were attached to the base of the box using epoxy. The mounting holes through the base of the box (for the model car) will be covered by other components later.
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