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WOW.... A gallon of liquid hand soap would last "little old me" years :-) Guess I could crank the recipe down some. Anyway, great article..... thanks
Very true! Water, oil or sand would be the best material to use. Not sure you could ever get enough air pressure in it to keep the PVC from collapsing.
Air will compress and you will get kinks. Sand will not compress, and you should get some smooth bends.
If you own an Olympus camera, you can use the "Live Composite" setting in the camera to take some great light trail photos. And even watch the imagine being created.
Very true about the in camera double exposure information.
Well done in camera double exposure. I know my Nikon D5100 can do up to 3 exposures in 30 seconds. The only time I have done such double exposres, was when I pushed the wrong button on my camera by mistake :-)