Saki Posted December 4, 2016 Report Share Posted December 4, 2016 I have been using Standard Ceramic Supply Company 365 English Porcelain, primarily for throwing. My local supplier recently ran out and started carrying Standard's 551 V.P. (very plastic) Porcelain instead. If anyone has experience with both, I would love to know what differences you noticed and which you preferred. Thanks! Link to comment Share on other sites More sharing options...
Saki Posted December 4, 2016 Author Report Share Posted December 4, 2016 Also, if I have trimming scraps from the 365, can I reprocess them with the scraps from the 551 while I transition from one clay body to the other? Link to comment Share on other sites More sharing options...
Saki Posted February 8, 2017 Author Report Share Posted February 8, 2017 Hi, it's been a couple months since I posted this, so I just wanted to check back to see if anyone familiar with these clays might be able to respond. Thanks! Link to comment Share on other sites More sharing options...
neilestrick Posted February 8, 2017 Report Share Posted February 8, 2017 Standard 551 does not feel anything like a typical grolleg porcelain. It feels like it has a bunch of ball clay in it. It is overly-plastic for a porcelain, and feels more like a white stoneware. If you like the non-plastic feel of a typical grolleg porcelain, you may not like the 551. You can mix clay bodies as long as they are formulated to mature at the same temp. Link to comment Share on other sites More sharing options...
glazenerd Posted February 8, 2017 Report Share Posted February 8, 2017 Porcelain trimmings can be mixed with little problems. You can also add a bit of EPK and Nep Sy to replace the fines lost during throwing. Standard is claiming no ball clay was used in their VP (very plastic) throwing body. Looking at the shrinkage and absorption, and reconciling that with their claim of no ball clay: I suspect they are using PV (plastic vitrox) and hectorite (light grey color) to produce this very plastic body. PV clay is white burning, so no harm done there. Hectorite is the natural (and much cheaper) version of macaloid. The combination would create a very plastic body: how well I know . That explains why some of my note cards on experimental bodies are missing.. Very Plastic also equates to high green strength, and 100% vitrification due to the very high SAS values. Nerd Link to comment Share on other sites More sharing options...
Guest Posted February 9, 2017 Report Share Posted February 9, 2017 I'm interested in hearing about other peoples experiences using this clay too. Link to comment Share on other sites More sharing options...
Saki Posted February 10, 2017 Author Report Share Posted February 10, 2017 Standard 551 does not feel anything like a typical grolleg porcelain. It feels like it has a bunch of ball clay in it. It is overly-plastic for a porcelain, and feels more like a white stoneware. If you like the non-plastic feel of a typical grolleg porcelain, you may not like the 551. You can mix clay bodies as long as they are formulated to mature at the same temp. Porcelain trimmings can be mixed with little problems. You can also add a bit of EPK and Nep Sy to replace the fines lost during throwing. Standard is claiming no ball clay was used in their VP (very plastic) throwing body. Looking at the shrinkage and absorption, and reconciling that with their claim of no ball clay: I suspect they are using PV (plastic vitrox) and hectorite (light grey color) to produce this very plastic body. PV clay is white burning, so no harm done there. Hectorite is the natural (and much cheaper) version of macaloid. The combination would create a very plastic body: how well I know . That explains why some of my note cards on experimental bodies are missing.. Very Plastic also equates to high green strength, and 100% vitrification due to the very high SAS values. Nerd Thank you both. I had misunderstood that greater plasticity would make it /easier/ to throw, and that the main trade-off would be increased shrinkage and warping. But it sounds like you find it less workable for throwing. If that's the case, I think I may want to look for another supplier of the 365, even if it means traveling a bit farther. Link to comment Share on other sites More sharing options...
irenepots Posted February 12, 2017 Report Share Posted February 12, 2017 I've tried those porcelains, and liked them both - but unfortunately I didn't keep good enough notes to tell you what it was I liked about them. I just finished up a box of Standard's 213 porcelain, which I didn't like at all and will never buy again. Hope this helps a bit. Link to comment Share on other sites More sharing options...
neilestrick Posted February 12, 2017 Report Share Posted February 12, 2017 To be honest, Standard's grolleg porcelains, #365 cone 6 and and #257 cone 10, are the only porcelains of theirs that I like. Link to comment Share on other sites More sharing options...
Guest Posted February 12, 2017 Report Share Posted February 12, 2017 To be honest, Standard's grolleg porcelains, #365 cone 6 and and #257 cone 10, are the only porcelains of theirs that I like. Is there another ^5-6 porcelain you like better? Link to comment Share on other sites More sharing options...
neilestrick Posted February 12, 2017 Report Share Posted February 12, 2017 Nope. 365 is awesome stuff. Link to comment Share on other sites More sharing options...
Guest Posted February 13, 2017 Report Share Posted February 13, 2017 Thanks Link to comment Share on other sites More sharing options...
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