AWPottery Posted September 18, 2015 Report Share Posted September 18, 2015 I have been making pots and using a lot of bisque stamps to decorate them after they have stiffened up a little. Now I wanted to combine for example a bowl with bisque stamp designs near the rim of the bowl where I have also created a double split rim. The problem I am running into is cracking with the split rims. This is occurring after I place the stamp decorations near the rim, which has already been split. Any suggestions on how I can get the rims not to crack? I am thinking maybe if I place the stamp designs further down from the rim, but some have been a half inch or so from the rim and still crack. I would like some close to the rim and have seen examples of Gary Jackson's stamped and split rims so it is possible. Suggestions appreciated. Link to comment Share on other sites More sharing options...
GiselleNo5 Posted September 18, 2015 Report Share Posted September 18, 2015 Hi there! Okay this is what I got. 1. Do not stamp too dry. The clay even on the other side of the piece can crack later. 2. Make sure the piece is drying evenly. Fo example, I turn my stuff upside down or the rim dries way faster. This is worst with my B-Mix. Link to comment Share on other sites More sharing options...
GiselleNo5 Posted September 18, 2015 Report Share Posted September 18, 2015 Oh and 3. Make sure you properly support the wall behind the stamping area. I've seen people use pieces of foam for other stuff,I think it would work for this too. Link to comment Share on other sites More sharing options...
Marcia Selsor Posted September 18, 2015 Report Share Posted September 18, 2015 As Clay Addict says, use pressure opposite the stamp. A hand sized round river stone works well. Marcia Link to comment Share on other sites More sharing options...
rakukuku Posted September 18, 2015 Report Share Posted September 18, 2015 you might try paining the area with wax resist after stamping. it slows down the drying. I have done this with connections on handbuilt stuff and it seems to work for that. rakuku Link to comment Share on other sites More sharing options...
neilestrick Posted September 18, 2015 Report Share Posted September 18, 2015 I think you're stamping too dry, causing hairline cracks that aren't visible until later. If you want to stamp wetter but have trouble with the stamp sticking, put a little corn starch on the clay before stamping. Link to comment Share on other sites More sharing options...
GiselleNo5 Posted September 19, 2015 Report Share Posted September 19, 2015 Or you can rub a little oil on the stamp too. Link to comment Share on other sites More sharing options...
earthfan Posted September 19, 2015 Report Share Posted September 19, 2015 Instead of stamping, could you get the same effect with a sprig? Link to comment Share on other sites More sharing options...
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