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Quick fix for old O-rings

Tim Gilbert

Quick fix for old O-rings

So last night I started to process some film and realized that the tank I usually use was still damp. So I grabbed another from the shelf over the sink and loaded it up (using my latest dark box of course.) I filled it with SP-76EC, squeezed it and started agitating. It dripped. I re-squeezed. It still dripped. I thought about putting it back in the dark box and swapping lids but it wasn't leaking that badly, so I kept going. I figured the O-ring was worn out since it was one of the very first tanks built. (Kind of...

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Film Washing myths.

Tim Gilbert film washing

Film Washing myths.

It's not a power washer. Some people mistakenly believe that washing film under running water is like using a power washer on their driveway. It's not. The running water is not blasting away the residual thiosulfate (fixer). The thiosulfate is actually embedded in the emulsion and can only be removed by diffusion (or dispersion, we'll let the chemists argue over the difference). While the chemistry behind this gets really complex really quickly, the concept is simple. It's more like soaking a dirty pan in the sink to remove the baked-on grease. Basically, the universe likes things in equilibrium. Thus the concentration...

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New technique for loading the film holders.

Tim Gilbert 4x5 film loading film holders SP-445

New technique for loading the film holders.

Slickest way we've found yet to load the film holders.

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Once in a Blue Moon Photo Contest, how to enter

Tim Gilbert

Once in a Blue Moon Photo Contest, how to enter

We finally found a new hosting site; we'll see how this works out. Here are the details.  

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What about 8x10 or 5x7?

Glenn Egli

What about 8x10 or 5x7?

We get questions almost weekly regarding the SP-2810 or SP-457 (these were our 8x10 and 5x7 versions of the SP-445.)  As most of you know, we launched kickstarters for both and neither met its funding goal. Hence, we've done no further development (ignore the pun) on either system. Why not? We'll skip the technical challenges (they can almost always be solved) and jump right into the marketing/business obstacles. The obvious question: is the market big enough? Answer: no one really knows. But frankly, we don't think that the size of the market is the issue but rather the demographics of...

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