If you try to cut a silicon boule using a (diamond) saw it only works with a saw that has no damage.

The version I'm using is 4.5.0.50

Cannot reproduce with a clean install, it could be another mod interfering with recipes. Try removing mods and see if that fixes it. Would be interesting to know why this is happening though.

After some testing it appears to be a conflict with MineChem( https://github.com/jakimfett/Minechem/ ). I will create an issue on their Github and link back here.

Issue on Minechem repo: https://github.com/jakimfett/Minechem/issues/226

The bug has been fixed in a later version of Minechem.
See https://github.com/jakimfett/Minechem/issues/226