Plexiglass Thickness

[pmangels17]

You could also try 1/4 inch clear polycarb corriboard. It is normally used for insulation but we stack two pieces together and use it for stuff. It holds 10-24 bolts nicely. Don't drill or tap, just run them with a drill. It'llhold most things. However, for items like s CRio, you should solidly bolt it with washers on each side. Hope this helps.

[artdutra04]

Depending on how well you support it, I've mounted electronics to as thin as 0.060" (1/16") polycarbonate sheet before.

In order to successfully use thin sheet (whether plastic or sheet metal), you have to prevent it from "oil canning", which is where the surface looks really wavy and anything mounted to it flops around.

Riveting a few strips of 1/2" x 1/2" x 1/16" wall aluminum angle to 0.060" polycarbonate can eliminate nearly all of the oil canning without breaking the weight budget.

[MrForbes]

Like everyone says, use polycarbonate instead of acrylic. But we usually use plywood for our electronics board, it's really easy to attach the components with screws, you don't have to worry about grounding issues (there might be a rule against having the cRio case contacting the metal robot frame), and plywood is stiff and light, as long as you use something like 3/8" to 1/2" thick.

We use a thin (1/16" thick or so) polycarbonate cover over the electronics, so we can see the blinky lights, and we put some thought into how the cover is mounted, so it's easy to get into when we need to work on it. Velcro is helpful for that.

[Phyrxes]

As Mr. Forbes said 1/4" Birch or similar plywood is a great solution, we use it every year as our base for mounting electronics. It paints easily and is much lighter than other materials of similar thickness. Most of our removable plastic panels are 1/32 polycarbonate sheeting simply mounted with industrial velcro.