M25.4 rubber grommet wallplate

Each prints in two half-pieces, in case the wires have already been run through the hole(s).

• wallTunnel.top.stl goes into the hole in the wall
• wallPlate.top.stl holds the M25.4 rubber grommet by its inner groove and slots into the wallTunnel.stl

Print two of each; they are split at 45*. Two nails/screws holds it altogether.

M25.4 rubber grommet from Amazon

If you have an MMU(2) and want a nice flat underside then you can print each part with its .support file(s) in a different material; I printed the actual parts in PETG and used PLA for the .supports stls.