hantremmer Posted August 10, 2018 Report Share Posted August 10, 2018 I made a pot and covered it with terra sig. Whoever fired it used a stamp to put the firing date on the pot. Now it says in black letters' 2 August'. I assume they thought it was a straight bisque firing, rather than a single-fire pot. The instructor didn't tell us to leave any notes with the items we fired. There's no glaze or anything else on the pot. How do I get the ink off? I've tried rubbing it with my finger and a bit of water, but no joy. Do I need to take a lighter to it or what? Link to comment Share on other sites More sharing options...
LeeU Posted August 10, 2018 Report Share Posted August 10, 2018 If it's on the underside maybe it could be buzzed off with a Dremel. Link to comment Share on other sites More sharing options...
hantremmer Posted August 10, 2018 Author Report Share Posted August 10, 2018 Unfortunately it's on the body of the pot, prominently displayed in the middle. I made the pot on a course - where we also learned to make terra sig - so it's annoying that this wasn't anticipated by the technicians. Link to comment Share on other sites More sharing options...
Fred Sweet Posted August 10, 2018 Report Share Posted August 10, 2018 hantremmer- Even if it was a pot to be bisque fired, the person who did the stamping should be informed that their choice of stamp ink contains metallic oxide(s), assuming it was stamped prior to firing the piece. If it was stamped after the firing, and the ink contains no metal oxide(s), it may burn off in another firing. Try having it re-fired. After all, what do you have to lose? Regards, Fred Link to comment Share on other sites More sharing options...
hantremmer Posted August 10, 2018 Author Report Share Posted August 10, 2018 Thanks for the reply Fred. It must have been stamped after the first firing, to show the date of the bisque (although it wasn't actually a bisque firing). I will see if I can get it refired by the same place. I've got no idea what happens to terra sig if it's fired twice. It's not a pot I want to glaze. Link to comment Share on other sites More sharing options...
Fred Sweet Posted August 10, 2018 Report Share Posted August 10, 2018 Shouldn’t have any difference if you didn’t have other effects (i.e. metals or combustibles attached or in proximity). Link to comment Share on other sites More sharing options...
Babs Posted August 10, 2018 Report Share Posted August 10, 2018 You need to ask if applied post or pre firing and what is in the ink. That way you can act accordingly. Link to comment Share on other sites More sharing options...
hantremmer Posted August 11, 2018 Author Report Share Posted August 11, 2018 Thanks Babs. I'll make sure to ask that. Link to comment Share on other sites More sharing options...
preeta Posted August 12, 2018 Report Share Posted August 12, 2018 Hmmm doesn’t ink burn off (if it is the appropriate ink)? whether bisqueware or greenware or terra sig or slip should the ink not leave any residue? esp a clay studio I would imagine uses the appropriate ink. I would take a picture and fire and see. I am though concerned about the terra sig you rubbed. Might leave some mark. One time I used ink thinking underglaze. The result was bad. Nothing. So disappointed. Lesson learnt. Ask. Don’t assume! Link to comment Share on other sites More sharing options...
Rae Reich Posted August 12, 2018 Report Share Posted August 12, 2018 If the ink has iron or other metallics, it might not all burn out but leave a shadow. Very poor studio management, to let the pots be stamped that way, maybe the stamper was told not to handle the pots and, hopefully, the ink is made of non-metallics. Link to comment Share on other sites More sharing options...
hantremmer Posted August 15, 2018 Author Report Share Posted August 15, 2018 Thanks for the extra feedback. I've got questions to ask when I go to have other pots glazed. I'll report back with whatever happens. Link to comment Share on other sites More sharing options...
Babs Posted August 15, 2018 Report Share Posted August 15, 2018 Would think it would burn off given the circumstances. Prob stamped on body so kiln packer doesn' have to turn everybody over to read bisque date. Other folk with terra sig. Ware from that process? Maybe your pot placed on wrong trolley?? Good luck Wonder what temp bisque to Link to comment Share on other sites More sharing options...
curt Posted August 16, 2018 Report Share Posted August 16, 2018 Put it in a dishwasher? Link to comment Share on other sites More sharing options...
hantremmer Posted August 16, 2018 Author Report Share Posted August 16, 2018 One place I used to go to puts the firing date on pots using pricing stickers - you know the little ones that you get on products in your local grocery store. I think that's a good system. Link to comment Share on other sites More sharing options...
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