startaro Posted November 23, 2014 Report Share Posted November 23, 2014 I'm slip casting porcelain and I am wondering if it is possible to attach casted parts to each other after one or both pieces are dry. Is dampening the dry clay and adding slip to attach them okay? Or will that cause problems when firing? Any help is appreciated Link to comment Share on other sites More sharing options...
Judith B Posted November 24, 2014 Report Share Posted November 24, 2014 If you just score the clay with a tool on both pieces, where they will touch, and then brush with water / slip, it should be fine. But you need to score the clay. If it is well done, it should stay together even after the firing. Link to comment Share on other sites More sharing options...
Evelyne Schoenmann Posted November 24, 2014 Report Share Posted November 24, 2014 If you use Paperclay-Porcelain, what you want to do is ok. With just porcelain.... I don't know. I wouldn't try it with dry pieces. They can/will break. Why not attach them in the just-before-leatherhard-stage? You don't have to wait until your piece is completely dry in the cast to take it out. You can take it out when it's still malleable. And Judith is right: scoring, and maybe using the magical mix of water (or slip) and sodium silicate. Fingers crossed for your project, startaro! Evelyne Link to comment Share on other sites More sharing options...
neilestrick Posted November 24, 2014 Report Share Posted November 24, 2014 Since they are cast pieces, it may work if you wet them a bit and use more casting slip to join them. Typically, porcelain would not do well joining dry pieces. Link to comment Share on other sites More sharing options...
startaro Posted November 24, 2014 Author Report Share Posted November 24, 2014 If you use Paperclay-Porcelain, what you want to do is ok. With just porcelain.... I don't know. I wouldn't try it with dry pieces. They can/will break. Why not attach them in the just-before-leatherhard-stage? You don't have to wait until your piece is completely dry in the cast to take it out. You can take it out when it's still malleable. And Judith is right: scoring, and maybe using the magical mix of water (or slip) and sodium silicate. Fingers crossed for your project, startaro! Evelyne this is stuff ive been working on in other materials (resin, plaster, cement) and im trying to replicate these kinds of results with clay. http://s3images.coroflot.com/user_files/individual_files/original_364685_hlkgdutli7e4hrwjoc5fzwf5k.jpg http://s3images.coroflot.com/user_files/individual_files/original_364685_0l00vtktehdoqo2eph_uyzy66.jpg so even though each mold has a bunch of hands/fingers/toes i cant cast enough before the base shape (usually a hemisphere) dries... either that or i cast a ton of little parts before i create the base shape, in which case most of the parts have dried by the time everything is ready to assemble. any suggestions? thanks! Link to comment Share on other sites More sharing options...
Chilly Posted November 24, 2014 Report Share Posted November 24, 2014 Use a magic box to keep everything damp after casting, then assemble them? Link to comment Share on other sites More sharing options...
Evelyne Schoenmann Posted November 24, 2014 Report Share Posted November 24, 2014 Yes, use plastic containers to keep the different casted pieces from drying out until you have everything together. And I would strongly suggest to use Paperclay-Porcelain for sculptures like that (if you want to use porcelain that is). Funny sculpture! Lots of work.... Evelyne Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.