That was a fun build. I picked up a set of white Hovi tips off ebay along with the screw caps mentioned above and set to work digging through my parts bins for odds and ends that would work to assemble it. I found a brass 1/4-20 nut that fit perfectly in the small end of the Reade cylinder, and some aluminum...hat....thing that I scavenged years back from work.
No idea what it is, but it fits perfectly in the large end, and leaves just enough gap at the top that the Hovi tip base sits flush with the edge.
I decided the Hovi tip looked a little too empty without the full guts, so I stuck the rounded end on with some double sided tape, making it easily reversible should I decide to go for screen accuracy.
I then glued one of the screw caps onto a brass 1/4-20 screw.
I made a white washer out of styrene by gluing a 3/4 inch metal washer to a sheet of 2mm plastic and sanding it down to match.
Voila.
Those assembled, I then found a coaxial cable connector with the right size to serve as a blank to form the Hovi tip mesh over.
Once glued in place and threaded on, the comlink is done.
I honestly don't know why I didn't do this build years ago. It's quick, simple, and easily recognizable. The brass gives it a really nice weight and it feels good in the hand.