[pinhole-discussion] silver, copper and fixer deposits

2002-02-12 Thread eric nelson
Hello all, Is is possible to use copper scraps to plate out silver from spent fixer? There seems to be a mild attack on the copper if it is placed into spent fixer. I am almost tempted to try copper plate etching for intaglio printing plates using the fixer as a mordent. I am have held off due

[pinhole-discussion] keeping temperatures up in tube processing

2001-07-18 Thread eric nelson
An old sage from a camera club dropped this pearl of wisdom for keeping his solution temperatures constant. He placed desk lamps with big bulbs shining onto the rotating tube of his cibachrome tubes. It seems like an excellent idea. His cibas were fantastic. eric nelson, marshfield, wi usa

[pinhole-discussion] Re: lesson plans for students

2001-04-10 Thread eric nelson
pages or the information on them. Good Luck! eric nelson artist educator marshfield public schools

[pinhole-discussion] really big pinhole camera.

2001-01-26 Thread eric nelson
discoveries as you build this challenging project camera. eric nelson marshfield wisconsin 54449