Editing Torah scroll (section)

===Parchment and ink===
According to the [[Talmud]], all scrolls must be written on ''[[gevil]]'' parchment that is treated with salt, flour and ''m'afatsim'' (a residue of wasp enzyme and tree bark)<ref>[https://www.bidsquare.com/online-auctions/artemis-gallery/handwritten-18th-c-hebrew-torah-scroll---from-morocco-1184287 Handwritten 18th C. Hebrew Torah Scroll - from Morocco], Bidsquare, 11 Oct 2018, accessed 28 July 2019</ref> in order to be valid. Scrolls not processed in this way are considered invalid.<ref>(Hilkoth Tefillin 1:8 & 1:14, [[Maimonides]])</ref>

There are only two types of kosher [[parchment]] allowed for a Torah scroll: ''[[gevil]]'' and ''[[klaf]]''.<ref name="Essential"/>

[[File:Scroll ink materials.JPG|thumb|Ingredients used in making ink for Hebrew scrolls today.]]
The ink used is subject to specific rules.<ref name=sfrt>[http://www.hasoferet.com/halakha-for-scribes/mishnat-soferim Mishnat Soferim The forms of the letters] translated by Jen Taylor Friedman (geniza.net)</ref> The ink needs to adhere to a surface that flexes and bends as the scroll is rolled and unrolled, so special inks were developed. Even so, ink slowly flakes off with time and use; if ink from too many letters wears away, a Torah scroll is rendered ''pasul'' ("invalid") and can no longer be used.