Question: What are the halachic issues with Silk-screened sifrei torah? I am interested in a summary of concise *halakhic* rulings of multiple authorities on the prohibition or permissibility of [HaRav Yitzchak Abadi](http://en.wikipedia.org/wiki/File%3aRabbi_Yitzchak_Abadi.png)'s [innovation](http://kashrut.org/scrollproject/) of silk screen *sifrei torah*. Please provide piskei halacha, and I prefer that the *shitot ha-poskim* come from reputable sources.

(As always, CYLOR before you make any decisions.)

Answer: 
[R. J.D. Bleich](http://en.wikipedia.org/wiki/J._David_Bleich) covered this topic in a recent [Survey of Recent Halakhic Periodical Literature](http://traditionarchive.org/news/originals/Volume%2037/No.%201/Survey%20of%20Recent.pdf). In the article he discusses a number of possible issues that have been raised with Silk-screen Sifrei Torah, but says that most of them are not so strong. He says there is one serious objection where the burden of proof falls on the innovators to show that it is OK:

The issue is the halacha in the gemara that says that the ink cannot be spilled or dripped. When the ink is pressed by a scribe, is that considered spilling/dripping and therefore is passul?

P.S.
A video of the process is available on [YouTube](http://www.youtube.com/watch?v=WvFED55xhv8).
Rav Belsky, on page 9 of *Shulchan Halevi* (English version), explains that while theoretically silk-screening could be kosher for writing Stam, there are some issues which can come up. He mentions that forgeries would increase, and there there could be a problem of kesidran ("written in order," which Teffilin and Mezuzah require).

Then he brings an issue with sirtut (line indents under the letters to help guide the sofer to keep the letters in a straight line) - that Mezuzah needs it, and even according to many shittos a sefer Torah needs it. It could be a problem according to Rabbi Akiva Eiger in *Shailos and Tshuvos* Siman 50.

He ends with the famous idea "chadasha assur min HaTorah" (anything new is forbidden). To revolutionize the way a mitzvah is to be performed or prepared, the initiative has to come from the Gedolei Hador, not from any single individual.

It is best to see it inside since I did not fully elaborate on the topic.