Please please please don't use plexiglas for your enclosure. Use polycarbonate. The difference in strength is orders of magnitude. Plexiglass will shatter just trying to drill it. Polycarbonate is more expensive, but it's essentially indestructible. I used makralon for my enclosure and other boxes. To fasten it together, I drilled and tapped 6-32 holes into the edges and used hex head screws. I'm confident that I could drop my controller from any height and it would survive without a scratch
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