Pugaboo Posted February 9, 2016 Report Share Posted February 9, 2016 I did some test plates with 2 white slip and 2 with white underglaze. The white underglaze is a MUCH brighter white. I used Mason 10% Stain 6700 in my test slip mixture. Is there something else I can use to try and get a brighter white, one more like the white underglaze? I am trying to find a more economical way of putting simple background color on pieces. underglaze is expensive when you start using it on multiple pieces across the entire piece. T Link to comment Share on other sites More sharing options...
TJR Posted February 9, 2016 Report Share Posted February 9, 2016 You could try 10% zircopax in the slip. I have seen recipes for this, but I don't have any personal experience. Wouldn't hurt to try it. TJR. Link to comment Share on other sites More sharing options...
bciskepottery Posted February 9, 2016 Report Share Posted February 9, 2016 I slake down Helios porcelain and use it as a slip on Little Loafers . . . much brighter background for underglaze decoration. Using a thin application of slip has not created any fit issues between Helios and LL. You could also use a grolleg slip in place of Helios. Link to comment Share on other sites More sharing options...
Pugaboo Posted February 10, 2016 Author Report Share Posted February 10, 2016 Thank you that's what I am trying to do. I use LL but it's a softer white not a bright white and I am looking for a stark white background for design work. I will look and see if I can get Helios at a reasonable price. I thinki have some Zircopax, if I do I will try a test batch using 10% in the slip. Test test test T Link to comment Share on other sites More sharing options...
GEP Posted February 10, 2016 Report Share Posted February 10, 2016 Standard 213 is a cone 6 porcelain, and makes a bright white slip too. Link to comment Share on other sites More sharing options...
Chris Campbell Posted February 10, 2016 Report Share Posted February 10, 2016 I use Laguna 'Frost' as a slip to whiten less expensive clays. Works well and one bag makes a lot of slip. Link to comment Share on other sites More sharing options...
perkolator Posted February 11, 2016 Report Share Posted February 11, 2016 Add an whitener/opacifier to your slip: zircopax, superpax, opax, ultrox, tin, etc etc etc Link to comment Share on other sites More sharing options...
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