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 Abadi's original teshuva can be found [here](http://www.hebrewbooks.org/pdfpager.aspx?req=1525&st=&pgnum=359&hilite=).