Quote Originally Posted by stroguy View Post
Jimmy? Did you mount the rings behind the Hambly? I have the Hamblys' and am thinking of this. Got a pic of it off?
I used those plastic suction cup mounting discs. They come in different sizes, but the ones I have are 79.98 mm. They measured 3.149" with my calipers. I had a couple laying around. I used a hole saw to cut out the inside diameter leaving a ring. I just measured the inside diameter I cut with the hole saw and it measures at 2.44". Simply take the disc and secure it to a block of wood with a couple screws on the soon to be discarded center area and slowly cut with a hole saw. Drill holes in the places you are putting the screw so you don't risk splitting the plastic by driving screws through it. The screws are just to hold the piece while you use the hole saw. I used a file to smooth out any rough ridges in the plastic from the cut.

I secured them to the top surface of the light rings with black RTV sealant. It's been over a year and still good.

Here are some 80 mmm discs I found quickly on Amazon.
https://www.amazon.com/Arkon-Adhesiv...ion+mount+disc