I'm looking for information resources tools on making jars

I believe that molten glass is poured into molds that have the threads and any raised logos already made into the mold.

I believe that molten glass is poured into molds that have the threads and any raised logos already made into the mold.

volume produced jars are more likely pressed?

I'm sure that a certain "you know who" will chime and tell us and will probably have all the equipment for sale. Just guessing.....

probably have all the equipment for sale. Just guessing.....

Abby someone...

Bryan,

All jars with threads are made in molds (old-style "moulds"). The mold provides all of the shape and features of the finished product. A gob of glass is placed in the mold and the molten glass is pressed into the sides of the mold by air and/or with an insert.

Liz Scott, Manager Glass Factory Directory of North America