Babs Posted December 23, 2015 Report Share Posted December 23, 2015 I glazed pots the other day and used an old glaze which on mixing to apply, formed bubbles at the surface, it does this if new mixed as well. I just dipped through the bubles formed thinking the bubbles would melt and disappear in the kilning... no they didn't! Quite an attractive thingie if that is what you want..hmm.. any way to disperse the bubbles? If left to disappear, have to stir glaze again. I was double dipping from bottom up this time so the bubbles were very obvious.. Link to comment Share on other sites More sharing options...
bciskepottery Posted December 23, 2015 Report Share Posted December 23, 2015 Babs -- bubbles on the surface of the bucket of glaze? or on the wares? If in the bucket, take some cheese cloth and skim the top. I've also heard about spraying with a mist of -- I think ammonia -- to burst the bubbles. Often see this in some buckets of shino where stirring creates the bubbles. Link to comment Share on other sites More sharing options...
Babs Posted December 24, 2015 Author Report Share Posted December 24, 2015 Thanks Bciske, bubbles on top of glaze in bucket, then when I dipped bowls bottoms in first to half way, the bubbles were transferred to the bowls, I didn't bother to burst them as I thought they would disappear on firing, but no, they are still there.. I think you writing "Ammonia" jolted something in my brain as something I'd read somewhere but an easier solution is as you suggest, running a cheese cloth over the top. Just another moment in ceramics where I thought I'd get away with it..... Link to comment Share on other sites More sharing options...
curt Posted December 24, 2015 Report Share Posted December 24, 2015 Those bubbles make me think of surface tension in the glaze slop. Does the glaze need some more deflocculation? Just to make it a bit runnier? Link to comment Share on other sites More sharing options...
jrgpots Posted December 24, 2015 Report Share Posted December 24, 2015 I have a glaze made from Bon Ami that always bubbles when mixing since it has soap in it. I always skimmed off the surface bubbles, but I will try ammonia spray. Jed Link to comment Share on other sites More sharing options...
Foxden Posted December 24, 2015 Report Share Posted December 24, 2015 I have sprayed wet mixed plaster with rubbing alcohol which lowers the surface tension and disperses the bubbles. I would try that as opposed to ammonia. Link to comment Share on other sites More sharing options...
Babs Posted December 24, 2015 Author Report Share Posted December 24, 2015 Right Curt, I'll try some defloc as it also sets in the bucket a bit, if my brain is doing the defloc /floc thoughts ok this am.. Link to comment Share on other sites More sharing options...
Marcia Selsor Posted December 24, 2015 Report Share Posted December 24, 2015 That's what I do. Diluted alcohol squirted onto the surface. Works on plaster too. a gem from Richard Notkin. Marcia Link to comment Share on other sites More sharing options...
bciskepottery Posted December 24, 2015 Report Share Posted December 24, 2015 Yes, rubbing alcohol -- not ammonia. Senior moment. Link to comment Share on other sites More sharing options...
Babs Posted December 24, 2015 Author Report Share Posted December 24, 2015 What about vinegar? Link to comment Share on other sites More sharing options...
Marcia Selsor Posted December 24, 2015 Report Share Posted December 24, 2015 never tried it for that purpose. Marcia Link to comment Share on other sites More sharing options...
Min Posted December 24, 2015 Report Share Posted December 24, 2015 hairspray works too Link to comment Share on other sites More sharing options...
Babs Posted December 24, 2015 Author Report Share Posted December 24, 2015 Never tried it for any purpose, no hang on that is a lie, I used it to keep some grasses from dropping gunk in a weed pot, remember those? Glaze was a stiff matte which prob didn't help the issue, should I look for a glossy glaze which does this, ie forms bubbles in the bucket, to try it out??? Look for problems?? Happy seasonal stuff people. Link to comment Share on other sites More sharing options...
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