What glue for a problem ZOOM ring???

xkaes · Jul 21, 2024

I can't be the only person with this problem.

I've got THREE zoom lenses with the same problem. The zooming ring has slid off and appears to be only held in place with some sort of very sticky glue -- so it's obviously not epoxy or Plio-Bond. These are all different brands so it seems to be a common construction design and glue.

I don't have any CLUE about this GLUE -- except I know I don't have anything like it.

Anyone have any ideas?

250swb · Jul 22, 2024

Evo-Stik 'Timebond' sounds like the glue you need. Try cleaning the old glue off with white spirit or IPA and when clean apply Timebond to both surfaces and wait for it to tack off before fitting together. Any glue that gets onto the lens barrel is easily removed with a tissue dampened with white spirit.

xkaes · Jul 22, 2024

Thanks. I've never heard of Timebond, but I'll check it out. It seems like the glue that is being used in these lenses is a Time Bomb.

xkaes · Jul 22, 2024

I checked out Timebond and that appears to be typical contact cement -- which dries hard. The glue in these lenses is not hard -- just very sticky. But not sticky enough. If it were just one lens, I'd blow it off as a manufacturing error, but I have three different lenses with the same glue problem. This glue goo is apparently used all over the place.

MFstooges · Jul 22, 2024

If it fails miserably, don't you think you'll get better result with pliobond and friends?

xkaes · Jul 22, 2024

I am reluctant to use any glue that is super fluid because I don't want it to drip inside the lens -- and make matters even worse.

MFstooges · Jul 22, 2024

I'm thinking that viscosity isn't really a problem since you can wait for few seconds until it gets little bit thicker. In my mind the bigger issue is how to install the ring without smearing the adhesive to the other parts of the lens since this ring is supposed to be slid over to its position.

xkaes · Jul 22, 2024

That does complicate things. They all have rubber rings around the zoom ring, so the best thing to do is take it off, but the inside is covered with gooey glue. I guess i'll just need to do a lot of clean-up.

Dan Daniel · Jul 22, 2024

Is the rubber ring flexible enough to reverse? Put in position, then pull one end back to expose. Apply glue, roll back into position. Repeat for other side.

There are a few clear flexible adhesives that come to mind but names elude me. Dupont 621?? In the green box at hardware stores?

Another approach would be a double side tape. Get into position, roll back an end, apply tape, and repeat. Or tape the shole area, them put a non-stick material around the tape, slide the ring into place, then pull the anti-stick out. I've had good luck with these materials for holding up over time-

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xkaes · Jul 22, 2024

I had been thinking about tape, so I'll check those out. Thanks. I just keep thinking that I can't be the only one with this problem.

Mal Paso · Jul 22, 2024

I love ebay for a lot of things but both products are cheaper on amazon.

Patrick Robert James · Jul 23, 2024

If you are talking about the rubber ring, I’ve always just used rubber cement. Works fine.

4season · Jul 23, 2024

Has the adhesive actually failed, or is the rubbery zoom grip deteriorating such that adhesive will no longer stick to it? If the latter, then replacement of the rubbery part is indicated.

xkaes · Jul 23, 2024

4season said:
Has the adhesive actually failed, or is the rubbery zoom grip deteriorating such that adhesive will no longer stick to it? If the latter, then replacement of the rubbery part is indicated.

The rubber rings are in fine shape. They simply slipped off because the GLUE underneath is simply GOO. Keep in mind that there are THREE lenses and they are all kept at room temperature and low humidity.

xkaes · Jul 23, 2024

Patrick Robert James said:
If you are talking about the rubber ring, I’ve always just used rubber cement. Works fine.

I think I'll give that a try -- on something else first, of course. One problem is that whatever glue I do use, I'll have to remove the old glue first. That might be the biggest challenge -- other than finding the time.

What glue for a problem ZOOM ring???

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