Economy Boron Nitride Spray

As expected

Used this on 2 of my new ceramic casting moulds. First try stuck to the glass and couldn't remove it. So I cleaned moulds and resprayed both. Again both fused glass pieces were coated and unable to remove even after soaking in vinegar overnight as well as glass stuck one of the moulds. Maybe ok for stainless steel or slumping moulds but bad for casting. False economy go for more expensive as that has never failed me.

I have now bought two cans of this expensive spray and each time the spray can has bunged up. So not fit for use. The cap has been put on straight after use. Any ideas?

I have been using st/st moulds with the high quality boron nitride spray for some time with success although it is expensive. Decided to give tygress a go last time and am very pleased with the result - looks as though the two coats application will last through several firings so very economical - I am one very happy fuser

This stuff is fabulous for stainless steel moulds, a two coat application will do several firings so works out much more economical than the more expensive one,

Irene