</span><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (fparnold @ Sep 28 2002, 07:44 AM)</td></tr><tr><td id='QUOTE'>One side question: how do you harden the gelatin size? Generally recommended are formaldehyde or glyoxal, but I&#39;d rather not keep formaldehyde derivatives around the house. Are there any good alternatives, or is this a &quot;deal with it or print something else&quot; issue?</td></tr></table><span id='postcolor'>
fparnold, Arentz reccomends Chrome Potassium Sulfate, I did not have this so I just used the hardener that comes with the Kodak rapid fixer since I never use it in the fixer. It worked like a charm, but probably left the paper acidic. I did not test it since I am only trying stuff now, no need to worry about permanence at this time.