Laser cut shelving cabinet system for routers, switches, firewalls, NASes, home labs, etc. There's integrated fan ventilation, air filtering, adjustable shelves, and basic cable management hooks. Use 3/16" (5mm) plywood. The front door is optional but will allow you to add two front fans and put an air filter in front of the fans to keep dust/hair/etc out. The fan grilles are sized for 200mm fans. Two for the back and two for the optional front. You'll want some sort of power supply for them since it's unlikely that you'll have Molex or 3-pin power just hanging around naturally. I cut up a spare 12v DC "wall wart" transformer and soldered it up to a bit of Molex. Make sure the transformer has enough amperage for all the fans you plan to use. If you choose to have a front door, cut-to-fit air filters can be purchased cheaply from any home improvement or online outlet. The filter should be no more than 1cm or 1/4" thick, at least 27cm / 10.5" wide, and 45cm / 17.5" tall. You also may want some hinges and/or latch to nicely open/close the door. This is a work in progress because I intend to edit the back of the box to be a rear door to better facilitate rewiring. Right now I'm using it with the back part unglued. Also the shelf pieces are currently 268mm wide, but could be up to 269 or 270mm. Or the shelf brackets could be a bit wider. If your plywood is bowed at all the shelves can fall out. Wood is imprecise especially when thin. Assembly Cut the "outer box" first. Arrange as necessary to fit your wood and cutter with minimal wastage. Always adjust your laser cutter's layers/order so that inner features like the fan grilles, air holes, and shelf holes get cut before the outline. With all the "nice" edges on the outside (burnt/backside flipped such that they're inside) use wood glue to connect all the finger joints together. In my case I did not glue the back side at all so I can remove it as desired, but it's up to you. You'll definitely want to glue it up with all the pieces fit together at least, to ensure a good fit. I also didn't glue the shelf brackets in since they press-fit on their own pretty tightly. Using some clamps or weight to keep things stable during gluing can help. Cut the "vented shelf" part second, as many as you want between 1 and 8. They should fit neatly inside the outer box. Finally, if you want the front door, cut and glue all its parts -- leave the very front piece unglued so you can insert and replace the air filter. If you want, you can attach the door to the box with hinges.