Would be nice if the recipe is conversion, then there be a reverse conversion recipe to convert from braidy underground to vanilla underground as well. Also, would be nice 100% of the conversion mode recipes were hand craftable, since conversion recipes don't use fluids at all.

Thank you very much, I have uploaded a new version to fix the handcrafting issue. Now, if using the conversion recipe, braidy belts should all be handcraftable and with the craft time reduced to 0.5s.
As for the reverse recipe, I will give it more thought. The usual way I think, would be when you mine the brady belt, a vanilla belt is returned to your inventory. I could and probably will make that an option. I am hesitant to add yet another recipe, but maybe.

Another update, this time adding the option to receive vanilla/modded underground belts in your inventory when you mine a braidy belt.
I hope that is enough to be of help.

That solves the recipe problem nicely for conversion mode.