Metate

I've made myself a japanese style saw vise and am dipping my toe in the murky waters of metate.

Does anyone on the forum have any experience? I contacted mark Grable a few years ago but it's very difficult to stay in touch with him. My initial question is about removing the burrs after filing the teeth. Does anyone know how metate deal with this?

Any other info would also be greatly appreciated.



Regards,

Gadge