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Showing posts from April 30, 2013

Water on Nahari ink - experiment

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I drew lines with about 5 years old Nahari ink on a business card and on klaf (unknown type and source of klaf). Let it air dry, then baked it in the kitchen oven at about 90 degrees C for half an hour to make sure it is really really dry.

Then, dripped water on the lines. Here is what it looks like.






On the klaf the ink spread a lot. On the card it barely spread. I then dripped more water all over the ink lines on the card. The ink for some mysterious reason did not spread. I don't know why is there such a big difference between ink on card and ink on klaf.

Dealing with mold on a sefer Torah

I was recently contacted by a shul here in the Pacific Northwest about treating a problem with mold growth on two of their sifrei Torah.  Having briefly looked through both sefarim it looks like the mold is fairly widespread manifesting in black spots along most of he margins and in a few places across areas of writing.  Based on my recommendation the shul took immediate action to dramatically reduce the level of humidity within the shul which has been nearly 100% by installing de-humidifiers.  The humidity is now holding at approximately 55%.  At this level, I think mold growth is much less likely, but it still leaves the tricky issue of dealing with with what's already formed on the Torah scrolls themselves.  I've done a bit of research on dealing with mold on parchment and it seems like there's quite a range of opinions, everything from misting the parchment with a solution of alcohol to exposing the klaf to direct sunlight for an hour, to using UV lamps. 

Does anyone h…