Leaman Pottery Posted August 17, 2015 Report Share Posted August 17, 2015 I have inheritied several large bags of unlabled glaze ingredients with many that were labeled. Is there anyway to test what they may be? Is there a lab that could test without it costing more than the 50 lbs of ingredient that is inside the bag? Any help would be appreciated! Link to comment Share on other sites More sharing options...
PeterH Posted August 17, 2015 Report Share Posted August 17, 2015 You might start with ... http://digitalfire.com/4sight/education/those_unlabelled_bags_and_buckets_134.html Link to comment Share on other sites More sharing options...
High Bridge Pottery Posted August 17, 2015 Report Share Posted August 17, 2015 I find lots of glaze material have a particular smell, hard to do if you haven't ever worked mixing glaze. Link to comment Share on other sites More sharing options...
Chilly Posted August 17, 2015 Report Share Posted August 17, 2015 Make a test tile, with dimples for each ingredient. Label carefully. Fire at ^06 the ^6 and see what happens. That will sort the refractorys from the fluxes. I was lucky that everything I was given was labelled, but some of those are suspect. Good Luck. Link to comment Share on other sites More sharing options...
rakukuku Posted August 17, 2015 Report Share Posted August 17, 2015 be careful. we had stuff donated from an estate that had been sitting around a long time. one bag was lead! rakuku Link to comment Share on other sites More sharing options...
oldlady Posted August 17, 2015 Report Share Posted August 17, 2015 sometimes the brand name can be of help. if you can find a brand name printed on the bag, a call to the manufacturer might give you an answer. sometimes even the name of the ingredient is printed on the bag. Link to comment Share on other sites More sharing options...
Marko Posted August 18, 2015 Report Share Posted August 18, 2015 Not a clue. Link to comment Share on other sites More sharing options...
Mark C. Posted August 18, 2015 Report Share Posted August 18, 2015 I have inheritied several large bags of unlabled glaze ingredients with many that were labeled. Is there anyway to test what they may be? Is there a lab that could test without it costing more than the 50 lbs of ingredient that is inside the bag? Any help would be appreciated!any marks or numbers on the bag??Like for example c-30 these marks may be on the bottom or side of bag Mark Link to comment Share on other sites More sharing options...
Patat Posted August 18, 2015 Report Share Posted August 18, 2015 I wouldn't recommend lab testing as it would cost in the order of $20-30 per sample.... Link to comment Share on other sites More sharing options...
sandy miller Posted August 20, 2015 Report Share Posted August 20, 2015 Do a button test with the unknown stuff, it gives you a starting point to start eliminating what it isn't. I have done button tests on most of my feldspars, kaolins etc. It gives you a good base to test your materials every time you get a new bag. Good luck, I'm still working through a few final bags of stuff I inherited 10 years ago! Fun stuff! Link to comment Share on other sites More sharing options...
Leaman Pottery Posted September 6, 2015 Author Report Share Posted September 6, 2015 Thanks for the responses. We will try the button tests and see how we do. The mystery materials are in large plastic bags. No original wrappers anywhere! Once we have a match with know buttons, will try a small batch of glaze using the unknown material as the substitute ingredient and if it works, we are good to go. Link to comment Share on other sites More sharing options...
Leaman Pottery Posted September 6, 2015 Author Report Share Posted September 6, 2015 You might start with ... http://digitalfire.com/4sight/education/those_unlabelled_bags_and_buckets_134.html Peter THANKS!!!!! What a wealth of information!! Love the table and information. I believed you have saved me. Lucinda Link to comment Share on other sites More sharing options...
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