README for Bumper print

These are printed generally in PLA and 2.4mm thick wall.
The article shows the construction for these parts.

The file Bumper Shim for Base to Clear LED Holders is there to stand the bumper up a little from the underdeck, which avoids the bezels interfering with the bumper. This is not essential, but makes assembly easier and we recommend this is printed and used to offset the bumper from the base.

For the top we suggest you use a clear or light coloured or fluorescent PLA as this has LEDS under it.
