This two cup coaster is 10"x3"x2 5/16". It has an Rgb led strip that changes form blue to green.
Step 2: Building the Housing
The drill bit is about 3".
Step 3: Painting and Putting Lights on the Housing
Paint housing with a gloss black. Then once dry take super glue and put some on Rgb led strip that you have cut out( the led strip has to rap around three sides).