How about the end of a radio-sonde balloon? They are availabe from surplus outlets and are quite-hefty rubber.
Hmm, thinking again; do they still sell natural condoms? Brands like Four-X and Lambskin were made of, I think, the lining of the sheep's stomach--or some other part of the innards.
There is a similar item, thicker and as I remember, perforated so it would not work for you if that is the case, used by people who counted a lot of paper money. It saved wear and tear on the finger leafing through the bills. I have no idea what they are called and don't remember every seeing one without the holes; but worth looking into
Thanks so I need to find a friendly Doctor :D There are medical suppliers in the Kemeralti (Street market area) near where we live in Turkey I'm sure I might find something there, or maybe those rubber things bank clerks use on their fingers to count money.
Thanks I'm seeing a perfume wholesaler tomorrow about something else that's another good idea and right shape & possibly size.
I can't speak for pharmacies in Turkey, but in the US they commonly sell finger cots. Worst case you would need to go to a medical supply and unless they suspect you of running a brothel for midgets, you should have no problem buying them.
There we go, that's what I was thinking.
Originally Posted by bdial
I doubt that the original was fexible like a balloon, but more like a bota bag that just inflated. You can make a miniature bota bag by coating cloth with pitch, tar or just paint on the inside. But, then you would have to put your sewing skills to work.
Maybe that's not a good idea. ;)
Go wrangle up a blowfish.
Key words: Blasebalg; Druckluftball
Wikinger Vertrieb sell them, they are used for air-cleaning the mirror and focusing screen of your camera.
About € 6,- ex shipment.
Hm... An ear wash ball, or what they are called in english, perhaps?
What about a very small piston? Some tubing, and close tolerance pin, a return spring and some O rings and oil for the seal. Starting to get a little complex but it's another idea.