I received this question via email. I am not really a klaf expert, I was wondering if anyone could answer this question: Dear Rabbi Gutnick, I am writing to you because a good friend of mine has put the idea into my head that the klaf in my tefillin were not really tanned and therefore are not kosher. He referred me to Megilla 19a re diftera. From the research that I have done so far, it seems that the klaf that is used today is tanned only with a lime wash. On all of the tanning websites I’ve seen so far, they say that the lime doesn’t accomplish tanning but only the removal of the hair and some other pre-tanning effects. Would you be able to explain to me or refer me to a website that explains how the tanning process that is used today takes the hide out of the category of diftera? Thank you very much.
I am unsure as to the answer to your question however I used your ink (Dyo Lonetzach) to write a kesubah on shiny paper and with handling parts of the ink peeled off almost like it was a rubber coating on the paper.Is this because of the paper or is this normal for the ink? The paper was very shiny.
ReplyDelete1. Shiny paper has a coating on it to make it shiny. Some coatings behave like an oily coatings - nothing can stick to an oily coating, unless the ink soaks into the paper.
ReplyDelete2. Dio lanetzach dries in stages. After initial drying, the adhesion of the (dry) ink to the paper is still not cured. So, it can peel off. It takes a few days of drying to develop full-strength adhesion. Before making strength experiments on the ink I wait 3 weeks for complete drying and curing.
Ok, Thanks for explaining
ReplyDeletesee bnei yona that dio sjould be tzaf and omed
ReplyDelete