The dark one is M370 with 10% added raw umber. The other is M370. Both are glazed using GA6-B Alberta Slip amber transparent. This glaze is the best functional super gloss recipe we have. The wood-grain texture is the artifact of 3D-printing the mold-mold, they are not detectable to the touch. And actually look great - like wood grain.
Beer Bottle Master Mold Project
A project that took several years of failures and blind allies and is finally coming together - so much simpler than expected!