Fixing loose fitting lids

I just bought a few hundred micromount boxes that are exactly the style I wanted, but unfortunately the lids are loose. When I pick the mount up by the lid, the bottom does not follow, or if it does there is a good chance it will come loose and fall to the desk or floor damaging the sample. Any suggestions about how to "tighten" the fit of the lids?

Maybe some thin stripes of tape on the edges of the lid?

___________
Antonio

Can you post a pic of the style of box you are using? It may help to find a solution.

I've used thin strips of 'invisible' tape (Scotch tape), as Antonio suggested. Cut to fit the inset for the box lid. Put in on the rear of the box. Usually 1 or 2 strips will do the job.

Mark,

Attached is a photo of the box that I am talking about. Its an Althor model P-13 with a 1x1x5/8" black bottom and a 1x1x3/8" clear top.

I recognize that box. I finally stopped using them and switched to a different size years ago. It seemed that in a given lot, many of the lids would fit too loosely, and I was always having to use the "tape solution" described above.

Cutting tiny strips of tape is a bit bothersome. I use a couple of small spots of bee's wax.

My problem is usually the reverse . . . the lid will not come off.

Antonio, Jim, and Alfredo,

I tried the thin strips of tape around the edges of the lid as Antonio suggested. It worked great, but took 3 layers of tape before it satisfactorily held up the box by the lid (I used one layer on each side, but guess I could have used a triple layer on one side to save time). But as Alfredo suggested I also found the effort bothersome. I then tried Alfredo's suggestion of Bee's wax which helped a bit, but the wax was too slippery, and the tape was still superior. This reminded me about some dubbing wax I use for fly tying. Its a mixture of bee's wax and pine tree resin to make it tacky. This improved things a little bit more, but the tape was still the best. I then tried some Elmer's Glue on the inset for the lid on the box bottom, as Jim suggested be done with tape. After it dried I put the lid on and off a number of times as a test, but the layer of Elmer's Glue didn't adhere to the shiny plastic and ultimately fell off. Then when I was painting the insides of some of the bottoms of my boxes with flat black RustOleum as usual, it suddenly dawned on me to put a layer of paint around the lip. Not on the lid, but on the inset for the lid on the box bottom. This was a success! I found that painting a single coat on 4 of the sides and letting the box dry overnight was too tight, but 3 sides was just right! I now think we have a number of solutions depending on how loose your lids are, and whether you paint your boxes (tape,bees wax, or paint).
Thanks a lot for your input guys, your suggestions kept me experimenting.

I had gotten a package of similar boxes with loose-fitting lids, and they can be irritating (why can't the companies maintain quality standards?). So I use cellophane tape to make a sort of "hinge" on the back side, and instead of them falling off, they swing off instead.

Sometimes the only way to deal with these companies is to buy only a very few of what you hope to buy later (if you can do so), to inspect the goods, then get them in bulk. Some companies tell sizes of outside dimensions for some boxes, inside for others, but they don't tell which are which! And trying to get sensible answers on the telephone is like trying to get a locality for a specimen that some aunt thinks she remembers, about 20 years ago, and gets the country correct but the rest is vague.