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Dear Earl,
Very happy to see you making classic style bonsai pots! I have used Wc-365 and like it. It Fires to a nice brick red in oxidation an warm brown in reduction.
Hard slab construction is a great way to hand build. Your perportions are classic and I commend you for this.
A straight rectangle is a very difficult shape. You will find that after firing 3 out of 5 of your pots will be bowed in along the edges. If you add a rim you will get better odds.
As for Joinery all the parts need to be as equal in dryness as possible. As soon as you can handle your hard slab without deforming them is the best time to join. Score and slip your joints and add a small coil as a reinforcement.
Dry them slowly in a closed cabinet out of drafts or wrap in loose plastic.
Lather,rinse, repeat!

6-Mar-2002	#4
Bonsainut Carrier of Bonsai Fever Join Date: Oct-2001 Location: So-Cal, US of A Country: America The Beautiful USDA Zone: Zone 9-10 AHS Heat Zone: ? Posts: 1,833	Re: Cracked pots Dear Earl, Very happy to see you making classic style bonsai pots! I have used Wc-365 and like it. It Fires to a nice brick red in oxidation an warm brown in reduction. Hard slab construction is a great way to hand build. Your perportions are classic and I commend you for this. A straight rectangle is a very difficult shape. You will find that after firing 3 out of 5 of your pots will be bowed in along the edges. If you add a rim you will get better odds. As for Joinery all the parts need to be as equal in dryness as possible. As soon as you can handle your hard slab without deforming them is the best time to join. Score and slip your joints and add a small coil as a reinforcement. Dry them slowly in a closed cabinet out of drafts or wrap in loose plastic. Lather,rinse, repeat! __________________ Keep growing,---'Nut Lethal Use of Farce