The HOLOMAX letters are made out of wood, painted in a very bright red so they 'pop' when lit by the LED strips. As for the typeface, they where constructed to match the HOLOMAX sign in Back to the Future Part II. The only differences between the two, is that I decided the letter 'O' should have a hollow middle and the 'A' a hollow top, on my sign so it would read clearly. I wanted the 'M' and 'X' characters to exactly match those in the film as I felt those were the most visually interesting.