Ubiquiti UniFi FlexHD Ceiling Mount by neotwig

Last crawled date: 4 years ago

I wanted to install some Ubiquiti FlexHD access points for exterior use, but the official ceiling mount is currently "Sold Out", with no option to order or any estimate for when they will be restocked. I didn't feel like waiting indefinitely and wasn't able to find the mounts through any other retailers, so I decided to make my own.
There are three 3D printable parts, and you will need at least 6 screws, but I used 9 for extra stability. I used McMaster-Carr item number 96068A105 which are Flat Head Thread-Forming Screws for Brittle Plastic, 410 Stainless Steel, Number 4 Size, 1/2" Long. I used these because I had a bunch on hand, and they're the same thread size as the official mounting screw for the Ubiquiti Pole Mount attachment.
The FlexHD should stick out the bottom of the mount about 50 mm, which is identical to the official Ceiling Mount according to the specs I found online.
I printed this all in ABS on a Prusa i3 MK3S on a textured sheet, and I think it looks pretty good. Other materials may work, but I don't think I'd recommend PLA. For my purposes 0.30mm resolution with 20% infill worked fine, but you can adjust that as you see fit.
Installation:
Use a 2-1/2" hole saw to cut the hole for the mount. The mount is just slightly smaller than this to easily fit through, and the trim ring will cover the hole.
The FlexHD slides into the mount from the top down, with the Ethernet jack lining up with the opening on the mount. The direction is important since it's slightly larger at the top.
Next, I pre-assembled the top cap on the mount using 5 screws. Note that the middle two are recessed slightly to better grip the FlexHD. Assembling the cap now partially blocks the Ethernet jack, but it made installation easier and my cable was rigid enough that I could still easily push it in without unscrewing the cap.
There are 12 screw holes on the outer ring, which goes above your ceiling to secure the mount. The 12 holes are just to give you options. I found it held just fine with one screw, but I used 4 for additional stability (one on each side). The screws dig into the mount printed part (not the FlexHD itself) so make sure you have everything positioned before screwing them in.