The International STa"M Forum

Technically speaking we havespace for  a half of yud,  a nun which is one kulmus, a yud is one and the chaf is 2 so we have 4.5 kyudim on the bottom on top we have a vav 1, a beis which is 2. and mayne another half totaling 3 which gives us a total of 7.5 however if a sofer was to make narrow yuds we might fit

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I have heard that working with dust from sanding batim smooth and fumes from teffilin paint can be cancerous is there a proper way to exhaust work room and prevent damage to ones health ?