Retaining ring or workaround

[plywood]

Just picked up a 135mm f4.7 Wollensak Raptar. Price was $10 and it works okay except that no retaining ring was present. I measure the thread diameter at 33.5mm. Are these retaining rings specific to a brand and type? Are they available anyplace or are they very hard to find?
Regardless, I will figure out a solution, but it would be nice to have a regular retaining ring.
The retaining ring from my 90 f6.8 Angulon is close but a bit too small.

[Sanford]

The rings are specific to the shutter. Look here for what you need http://skgrimes.com/products/mountin...-stock-flanges

[Randy]

Since I make my own lens-boards, cut from Masonite...I think (old clip-boards I get at yard sales), if I am making one for a lens that has no retaining ring, I cut the hole in the lens-board just a bit small, then with a rounded file I enlarge the hole until it is just large enough for me to screw the lens (or shutter) into it, and the threads cut into the Masonite, making a nice firm mounting. I might be hesitant to do that with a large heavy lens, but I have some smaller lenses that have been mounted that way and used for many years.

[Jac@stafford.net]

Just picked up a 135mm f4.7 Wollensak Raptar. I measure the thread diameter at 33.5mm.

A great work-around are external retaining rings https://www.homedepot.com/p/Crown-Bo...9638/202210088 illustration). They work!

Surf the 'net for exact fit. Order one slightly smaller than 33.5mm

[Tin Can]

Dental floss!

Wind it tightly around the threads in the correct clockwise direction until it is good enough.

Then tie a knot or drop of glue.

I only recomend this for $10 lens...

Don't ask me how to fix a flat tire in the middle of nowhere.

[Luis-F-S]

Dental floss!

Don't ask me how to fix a flat tire in the middle of nowhere.

Dental floss????

[Tin Can]

One method of fixing a flat tire in the middle of nowhere.

Is stuff the tire with grass, hay, weeds, rags what you. Keep at it.

I have seen this done, it's hard work, but it saves the tire from total destruction and will get you down the dusty road. Remember this is middle of nowhere...

Flight of the Phoenix is one of my favorite movies. The first one, made in 1965.

Dental floss????

[plywood]

Thanks all. I'm leaning toward the 'hole just the right size' and 'dental floss' solution. Benefits are no extra expense and it's renewable.
On more complete examination this units shutter is.....well put kindly, a bit lacking. Since I'm only messing about with photo paper negatives at a nominal ISO 6, I've locked the shutter open and will stop well down and just cover/uncover the lens for the correct time.

[Jac@stafford.net]

Thanks all. I'm leaning toward the 'hole just the right size' and 'dental floss' solution. Benefits are no extra expense and it's renewable.

Yeah, the $1.75 snap ring is too expensive.

[Tin Can]

No, it's too hard to find on Saturday night, and few actually have a 'real' hardware store.

Yeah, the $1.75 snap ring is too expensive.