loose rear lens cap

[Kirk Gittings]

if you had a loose plastic lens cap and wanted to tighten it up a hair what would you do?

[Kirk Gittings]

Well I put a small piece of the "furry" side of velcro on the side and it seems to work well. I'll see if it lasts.

[Jmarmck]

masking tape.......................

[Alan Gales]

Replace it with a pinch cap if it gives you trouble again.

[Louis Pacilla]

Hey Kirk I find that when modern plastic caps give up the "hold" I add a bit of gaffers tape as needed. Most of the time it needs only a mm or less to fit snugly again and most Velcro/ sticky back felt seems to be too thick then I usually needed on the this type of lose fitting cap.

Nothing worse then having the expectation of a rear cell having a cap on it when you sit it down out of doors. Only to realize the loose fitting cap is laying at your feet and the rear cell glass is on the hard surface I had sat it on. What a bummer that is.

Now with "vintage" lenses if I find a leather cap that's a close fit but to large by a 2 mm or 3 mm then I'll make up the difference with sticky back felt which is a few mm thick from the go.

BTW-If the Velcro you used is working out then that's that.

[Kirk Gittings]

Replace it with a pinch cap if it gives you trouble again.

No thread on the rear for it to grab on to. Do many LF lenses have rear threads?

[Kirk Gittings]

Hey Kirk I find that when modern plastic caps give up the "hold" I add a bit of gaffers tape as needed. Most of the time it needs only a mm or less to fit snugly again and most Velcro/ sticky back felt seems to be too thick then I usually needed on the this type of lose fitting cap.

Nothing worse then having the expectation of a rear cell having a cap on it when you sit it down out of doors. Only to realize the loose fitting cap is laying at your feet and the rear cell glass is on the hard surface I had sat it on. What a bummer that is.

Now with "vintage" lenses if I find a leather cap that's a close fit but to large by a 2 mm or 3 mm then I'll make up the difference with sticky back felt which is a few mm thick from the go.

BTW-If the Velcro you used is working out then that's that.

The problem any kind of tape including Velcro is the heat out here in the SW. Sometimes you just have to leave your gear in a hot car and the temps can skyrocket melting the adhesive on any tape.

[Jmarmck]

That comment about masking tape was a joke. Yes may adhesives will cook in the heat. Not to state the obvious but you could always buy a new one.

[mdarnton]

I had some loose Leica front caps which I tightened by holding a pin in a forceps, heating it over a gas flame, and used the tip to drag a few tracks the short way (front to back) in the inside of the cap in a few places--maybe six or so. This plowed up little ridges on either side of the point that were just enough to make the cap fit nice and tight. Adhesives inevitably get gunky with time, and peel.

[Brian Sims]

I fixed mine once by tossing the cap in some boiling water for a couple of minutes and then wrapping it with a wide, tight rubber band and leaving it for a few days. The tighter fit last for almost a year, then I had to do it again.