Tablet stand 3mm plywood or acrylic

Remix of https://www.thingiverse.com/thing:128986.
Stand changed for 3 mm plywood or acrylic and more width for more stability in landscape mode.
For cutting 3 mm plywood I use laser 2,5 W, 3 passes each 0,8 mm step into material, speed 300 mm/min start offset -1 mm from top of material (into material).