I just unloaded my bisque, and every piece that was thrown with B-mix Sand cracked, save two small salad plates. Not s-cracks or cracks along the foot ring; these cracks started at the rim and meandered. Sadly, the casualties included the vessel sinks. Was I raving about B-mix Sand before? I take it all back. Doesn't matter how easily it throws if nothing survives the bisque.
I didn't dry or fire especially quickly, and every other piece in the kiln survived just fine.
Good thing I am so very mild-mannered, or I'd be really aggravated right now.
I think I'll go have a drink. Maybe do some yoga, or something.