cmichael
Member
For the past several weekends, I have been having an absolute blast lith printing with the Kodak D-9 developer formula. I really like this developer with Forte PWT and Kentmere Fineprint WT. I ordered Kentona and Fotospeed Lith paper for this weekends adventure. Since I will be testing these new (to me) papers this weekend, I figured I should try another developer at the same time. (I might as well agitate two trays for 10 minutes instead of just one.) I really wanted to try the LD20 developer from Freestyle, but I could not justify spending $30 for 500ml of developer that I could probably make for a buck at home. Which finally leads me to my questions:
1) Im thinking of trying the Kodak D-85 formula (or similar) next. D-85 contains paraformaldehyde and D-9 does not. Do the developers containing formaldehyde produce significantly different results than the non-formaldehyde developers like D-9?
2) I do not have paraformaldehyde and plan on using acetone instead. (using a ratio of 2.2ml acetone ~ 1g paraformaldehyde) Does this substitution have an effect on the lith print? To the best of my knowledge, this substitution was in reference to film development.
3) I do have formalin (37% formaldehyde). Could formalin be substituted for paraformaldehyde? If so, at what ratio? I would like to steer clear of formaldehyde in open trays for health reasons, so I would prefer to use acetone in the long term. However, I would not mind comparing acetone vs. formaldehyde to observe any differences.
4) Other than D-85, are there any other homebrew developers worth trying? I am in the experimental stage right now and I am just looking for something that provides a stark contrast to what I am now getting with D-9. I recently obtained Tim Rudmans book on lith printing and there seems to be substantial differences in results with various developers.
5) Any hints in terms of chemistry tweaks? Reduce potassium bromide, add a pinch of sodium sulfite, etc?
Sorry for the lengthy post. I have searched quite a bit for this information, but most of the responses I have seen were just speculations.
1) Im thinking of trying the Kodak D-85 formula (or similar) next. D-85 contains paraformaldehyde and D-9 does not. Do the developers containing formaldehyde produce significantly different results than the non-formaldehyde developers like D-9?
2) I do not have paraformaldehyde and plan on using acetone instead. (using a ratio of 2.2ml acetone ~ 1g paraformaldehyde) Does this substitution have an effect on the lith print? To the best of my knowledge, this substitution was in reference to film development.
3) I do have formalin (37% formaldehyde). Could formalin be substituted for paraformaldehyde? If so, at what ratio? I would like to steer clear of formaldehyde in open trays for health reasons, so I would prefer to use acetone in the long term. However, I would not mind comparing acetone vs. formaldehyde to observe any differences.
4) Other than D-85, are there any other homebrew developers worth trying? I am in the experimental stage right now and I am just looking for something that provides a stark contrast to what I am now getting with D-9. I recently obtained Tim Rudmans book on lith printing and there seems to be substantial differences in results with various developers.
5) Any hints in terms of chemistry tweaks? Reduce potassium bromide, add a pinch of sodium sulfite, etc?
Sorry for the lengthy post. I have searched quite a bit for this information, but most of the responses I have seen were just speculations.