Martin S

Hi @Steven Goldate I expect you could properly seal the saggar with sand. Make a base dish with 2 rims an inch apart and with plenty of depth. Make another vessel (the saggar) where the rim fits between the 2 rims of the dish. Put sand between the 2 rims and then nestle the saggar into the sand. Theoretically, this should create a very nice seal, while simultaneously allowing excess gas to be vented through the sand. I'll be trying this technique later this year and will report back if I find anything interesting.