Dear All, My 2 cents on electrical tape... Mostly I've used electrical tape for shutters, mounting pinholes and sealing the edges of box and can cameras. I've used the cheap stuff and stopped using it. It would lose its sticking ability within a few exposures and leave glue on the pinholes and can rims. It gets stiff in winter making it hard to get the shutter back on in sub-freezing temperatures. I started using 3M electrical tape, which costs 2 - 6 times as much (depending on sale prices v. full retail). Its worth it, though: I use way less of it. It is easy to work with, maintains its elasticity in winter with and can be used repeatedly. I've used the same long strip of tape for many exposures over many months to light-seal the lid on large popcorn cans.
Tom
