WarEagle2334 Posted June 8, 2020 Report Share Posted June 8, 2020 https://glazy.org/recipes/11501 I need a little help. I used the above recipe to make a cone 6 glaze. Problem I have it’s that it dries super fast and goes on way to thick when dipping. When I try to wipe some off it flakes off in huge chunks. The specific gravity is that 1.39. Link to comment Share on other sites More sharing options...
liambesaw Posted June 8, 2020 Report Share Posted June 8, 2020 Did you use gerstley borate? The recipe has no clay, so the surface won't be durable or adhere well. If you use gerstley borate it could help gel the glaze a bit. Otherwise try adding 2% bentonite. It's not a great recipe "in the bucket" as they say. Link to comment Share on other sites More sharing options...
WarEagle2334 Posted June 8, 2020 Author Report Share Posted June 8, 2020 I did use Gerstley Borate for Gillespie Borate. Link to comment Share on other sites More sharing options...
Bill Kielb Posted June 8, 2020 Report Share Posted June 8, 2020 1 minute ago, WarEagle2334 said: I did use Gerstley Borate for Gillespie Borate. Not a great recipe for applicators. 1.39 seems typical for dipping but might have to increase water if it’s still too thick. How long was your dip? We have a three second dip rule but it varies considerable from potter to potter. As Liam mentioned, this recipe will be tough to use as normally we like to see 10% clay to help keep everything suspended in the bucket else it’s constant stirring. The Custer substitution seems nice in the picture. As far as bentonite, it calls for 1 percent already so moving to 2 is likely ok but probably will not keep this as suspended as clay would. its flux ratio is in a durable range(That’s good) , it’s boron is .22 (a bit high). 0.15 usually gets a cone six melt but then again it has a 12:1 Si:al so it should fire matte or be tough to melt. Link to comment Share on other sites More sharing options...
Min Posted June 8, 2020 Report Share Posted June 8, 2020 Alumina is low for a durable glaze for functional pots. If the glaze is for non functional pots you could add some CMC gum, made up as a liquid, for part of the mixing water. CMC would help with both the binding of the raw glaze to the pot and the durability of the raw glaze coat. Problem with doing this is the gum will slow down the rate the glaze dries at so can lead to unwanted drips and sheeting of the glaze when pots are dipped. There was a thread a few days ago about a lithium turquoise and @Dick White supplied an alternate recipe here. It has epk in it so that would help with the binding issue. Alumina and silica are at much better levels and the other fluxes are in line with the Glazy recipe you linked. Link to comment Share on other sites More sharing options...
Babs Posted June 8, 2020 Report Share Posted June 8, 2020 What cone do you bisque to? Link to comment Share on other sites More sharing options...
neilestrick Posted June 8, 2020 Report Share Posted June 8, 2020 I'd look for a better glaze. That color is not rare, and I'm betting it wouldn't take much hunting to find one that is very similar and doesn't have the problems this one does. As Bill said, look for glazes that have 10% or more clay (usually EPK or ball clay) in them. IMO it's not worth the hassle to deal with a glaze like this, especially if you plan to use it a lot. Link to comment Share on other sites More sharing options...
WarEagle2334 Posted June 8, 2020 Author Report Share Posted June 8, 2020 Firing to cone 6 8 hours ago, Babs said: What cone do you bisque to? Link to comment Share on other sites More sharing options...
WarEagle2334 Posted June 8, 2020 Author Report Share Posted June 8, 2020 Thank you all for your help. I love this place! Link to comment Share on other sites More sharing options...
WarEagle2334 Posted June 8, 2020 Author Report Share Posted June 8, 2020 10 hours ago, Bill Kielb said: Not a great recipe for applicators. 1.39 seems typical for dipping but might have to increase water if it’s still too thick. How long was your dip? We have a three second dip rule but it varies considerable from potter to potter. As Liam mentioned, this recipe will be tough to use as normally we like to see 10% clay to help keep everything suspended in the bucket else it’s constant stirring. The Custer substitution seems nice in the picture. As far as bentonite, it calls for 1 percent already so moving to 2 is likely ok but probably will not keep this as suspended as clay would. its flux ratio is in a durable range(That’s good) , it’s boron is .22 (a bit high). 0.15 usually gets a cone six melt but then again it has a 12:1 Si:al so it should fire matte or be tough to melt. It did it at almost any second dip. 1-3 seconds coated it pretty thick. Link to comment Share on other sites More sharing options...
WarEagle2334 Posted June 8, 2020 Author Report Share Posted June 8, 2020 Does anyone believe Darvan 811 might help at all? Link to comment Share on other sites More sharing options...
WarEagle2334 Posted June 8, 2020 Author Report Share Posted June 8, 2020 9 hours ago, Min said: Alumina is low for a durable glaze for functional pots. If the glaze is for non functional pots you could add some CMC gum, made up as a liquid, for part of the mixing water. CMC would help with both the binding of the raw glaze to the pot and the durability of the raw glaze coat. Problem with doing this is the gum will slow down the rate the glaze dries at so can lead to unwanted drips and sheeting of the glaze when pots are dipped. There was a thread a few days ago about a lithium turquoise and @Dick White supplied an alternate recipe here. It has epk in it so that would help with the binding issue. Alumina and silica are at much better levels and the other fluxes are in line with the Glazy recipe you linked. Thanks so much. You always have some great advice/direction. this would be on functional pottery? What makes it not good for that? Link to comment Share on other sites More sharing options...
neilestrick Posted June 8, 2020 Report Share Posted June 8, 2020 Here's a reformulation that uses Frit 3134 instead of Gerstley, which allows for some clay in the mix. Test it and see how it does. VTR.pdf Link to comment Share on other sites More sharing options...
Bill Kielb Posted June 8, 2020 Report Share Posted June 8, 2020 2 hours ago, neilestrick said: Here's a reformulation that uses Frit 3134 instead of Gerstley, which allows for some clay in the mix. Test it and see how it does. VTR.pdf 67.33 kB · 0 downloads Nice clay add! Link to comment Share on other sites More sharing options...
Babs Posted June 9, 2020 Report Share Posted June 9, 2020 10 hours ago, WarEagle2334 said: Firing to cone 6 But what is your bisque fired to...or are you raw glazing? Just that a low bisqued pot wil absorb a lot of water and so a lot of glaze material onto pot surface making for thick application of glaze even though seems SG ok.... Link to comment Share on other sites More sharing options...
WarEagle2334 Posted June 9, 2020 Author Report Share Posted June 9, 2020 Cone 06. Link to comment Share on other sites More sharing options...
Babs Posted June 9, 2020 Report Share Posted June 9, 2020 Go to cone 04...or use more water in the glaze bucket. Wipe your pots with damp sponge pre glazing. Test a few small tiles with more water in glaze bucket..take a known amount i cups and add known amounts of water snd look at prefired surface may give you an indicator Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.