My new old pretzel lens needs a lens cap as there is no shutter on it (being a projection lens salvaged from a busted up turn of the century McIntosh Stereopticon) After going though my stash of lens caps there were none that fit! I reckoned the cap needs to be 70mm and it just so happens Equinox Photographic has a old leather one listed, but they're on the road so I figure I'd make my own using these directions
Now cutting a perfectly round puck for a mould proved to be more of a challenge than I planned not having the correct tools, so I found a package of 3" wooden disks at Michaels craft store which are slightly largerwhich according to the instructions, is still do-able, and glued them together to make my puck. They also had heavy cardstock so I bought a sheet of that and used roughly half of it to build up the form of the lens cap holding it together with contact cement.
I also went to Tandy and picked up a scrap of thin black leather trim and soaked it for an hour. While the leather was soaking in water (in an empty coffee can) I sanded the cardstock form and spread some glue on it. I wrung the water out of the scrap leather and with the puck on top of a can of Campbell's Tomato Soup I stretched the wet leather over the best I could, smoothing out the wrinkles and gathers and then flipped the puck over with the leather still tight and shot a few staples through the leather and into the wooden puck to hold it until dry.
So far, so good! Now I need to find a bit of velvet to glue inside and turn the leather over the rim,but that will have to wait until its good and dry---perhaps tomorrow night.