Rack Shelf for CRS305-1G-4S+IN

A small shelf designed to hold the MikroTik CRS305-1G-4S+IN switch in place and connect to a server rack.

There are small pegs to hold the switch in place: it is a somewhat tight fit, but the switch can be set atop the pegs and slid backwards to hold it securely in place between the pegs and a small wall along its edges.

This holds the switch roughly centered vertically in the 1U space, allowing a small amount of room for a power cable to come out over the top of the switch beneath a 1U server above the switch if necessary. The bottom of the shelf is sloped to provide support for the cantilevered shelf, and the rack side has an additional sloped support. This support does not cover the switch lights or reset button (but your rack may).

The shelf appears to be quite stable, even printed with PLA with the settings below. (If you are using this in a very hot server environment, consider using a higher-temperature printing material if necessary.)

You'll want to print this oriented “face down”, with the front of the shelf on the build plate, which results in minimal support material requirements yet provides strength against torque from the weight of the switch.

If you want the switch on the left-hand side of your rack instead, you can flip the model horizontally: the switch will mount fine.

(Don't worry, this photo was just to demonstrate the fit of the shelf in a rack - I managed the cables more correctly afterwards.)

The corresponding FreeCAD file is included. Please do not sell this model without contacting me first.

Printing

• Orientation: on the “face” of the shelf, with the rack ear down on the build plate
• Rafts: no (unless you need them for adhesion)
• Supports: yes ("supports on build plate only" may work, but they are not hard to remove from the small lip)
• Infill: anything
• Perimeters: 2
• Perimeter generator: Arachne, if available
• Layer height: 0.3mm
• Material: PLA