regular mason jar Threader,thread maker, collar, threads, , 28/400, thread mold

Classic Lines Pottery Verified independent store

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Make threads on your pots to attach mason jar pumps. These are made with 13% or 12% shrinkage calculated in the size, I personally use them on cone 10 B mix. If I make 10 bottles b y the time I get the last one done the first one is usually firm enough to remove the collar and use again. I spray a little WD-40 in the threads to make sure the clay doesn't stick and removal is easy. Place the collar on a narrow neck bottle and using a finger or small tool pull the clay up through the collar and against the threads to get a good impression. Trim the top level and set aside to dry, when leather hard you can remove the collar carefully. Do not smooth the threads very much with a sponge or you will change the size, better to wait until it is dry. I will try to get a video made of using the collars when I next make bottles. I get my pourers and pumps at onedreamdesign.com Show more