FoggyHighway Posted December 28, 2018 Report Share Posted December 28, 2018 Hi. Just curious if raw glaze dry materials age - and if this should be (or what should be) a consideration when buying raw materials second hand. Link to comment Share on other sites More sharing options...
glazenerd Posted December 28, 2018 Report Share Posted December 28, 2018 Short answer: they will not go bad-natural materials. The exception: lithium carbonate that will degrade over a long period of time: which will accelerate by direct exposure to sunlight. Lithium should be stored in glass, it will leach materials. T Link to comment Share on other sites More sharing options...
liambesaw Posted December 28, 2018 Report Share Posted December 28, 2018 Lithium, u scary! Only thing I can think of is if some powders were kept in an area with moisture. Hygroscopic minerals like zinc oxide might clump up and be a pain in the rear to use. Link to comment Share on other sites More sharing options...
Mark C. Posted December 29, 2018 Report Share Posted December 29, 2018 99.9% of ceramic materials will keep forever-buying used is great.Just keep them dry Link to comment Share on other sites More sharing options...
Min Posted December 29, 2018 Report Share Posted December 29, 2018 Make sure everything is labelled well or in original bags as there are lots of materials that look the same. Link to comment Share on other sites More sharing options...
hitchmss Posted January 3, 2019 Report Share Posted January 3, 2019 Everyone else nailed it; keep it dry, out of the sunlight (both mainly to protect bags so they dont fall apart when you go to pick up a 10 yr old bag of materials.....). Not a "dry" material, but often found in the "raw" materials section of many a studios, that does go bad is CMC, once mixed with water. If you plan on storing a lot of materials for a long time, as others have said, label your products really well. Magic marker does fade with time, as does a lot of other printed labels. A physical (stamped/pressed metal/plastic) label will allow you to see what it reads even 50 years later. I like to print off the material name, chem formula for that material, and a small "detail" about that material (flux, oxide, etc etc), and affix that paper to the tub with heavy duty packing tape, layered from the bottom to the top (like shingles on a roof), and then I write the name on the lid too in Magic Marker. This works well for smaller containers (1 gallon to 10 gallon); most 50# bags of materials will fit into a 5 gallon bucket...... except for magnesium. Get the screw on lid adaptors for your 5 gallon buckets; much easier on the hands, and they hold up lots longer! Link to comment Share on other sites More sharing options...
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