Based on Arduino Hardcase by risknc - thingiverse.com/thing:13466This version has no recessed screws/nuts, requires less acrylic, and doesn't require any gluing. It has a hole at the top rear for attaching a lanyard or other mounting mechanism.With the HeatSync Labs logo on the front, this tactical Arduino holster will keep your uC safe in the harshest of Defcons!Import the files and adjust the logo/text if desired.Make sure your laser will engrave the logo/text, then cut screw holes, and then cut the outlines, to avoid mistakes.Plan out how many you want, and duplicate/arrange the pieces for minimal waste.If you're not using Arduino Unos, measure the outer dimensions, thickness, port placement, and mounting holes to make sure it'll fit nicely.Cut the top 3 items from 1/8" (3mm) acrylic and the bottom 2 items from 1/4" (6mm) acrylic. NOTE: some Arduinos are slightly more than 15mm tall when you include the leads on the bottom of the board. You might need to file down the power/usb leads to make the board fit. Optionally you can cut all 3 U-shape side pieces from 6mm acrylic, however it will not be as snug and the headers will be less accessible.Assemble the top (logo) plate, side pieces, and back plate as desired. Secure with 1" (25.4mm) long machine screws and nuts, ideally M4 or 6-32. Attach lanyard. Enjoy!There are holes for mounting the Arduino to the backplate, however I don't use them as you'd need short screws to fit inside.