Chilly Posted June 28, 2015 Report Share Posted June 28, 2015 My partner Steve helped me roll out and cut 88 terracotta tiles, which are slowly drying to leather-hard. I forgot to take the WD40 with me, so we used talcum powder (someone's cast-off - the scent was awful) to dust the tile-cutter between cuts. Now most of the tiles have white on them. Given the timescales, I can't get a sample fired before the scout camp where the youngsters are going to scribe them. Should I wipe each one and remove the talc, or will it completely fire away? There will be no other decoration, colour or glaze used on the finished tiles. Thanks Link to comment Share on other sites More sharing options...
High Bridge Pottery Posted June 28, 2015 Report Share Posted June 28, 2015 I would think the MgO and SiO2 would merge with the body any there wouldn't really be any noticeable white left but this is a guess, who knows what is in actually talcum powder. Will most not lightly tap off once bone dry? Link to comment Share on other sites More sharing options...
Chris Campbell Posted June 28, 2015 Report Share Posted June 28, 2015 I don't know what type of talcum you used, but I've used cheap talcum powder and it all burned off. Link to comment Share on other sites More sharing options...
Callie Beller Diesel Posted June 28, 2015 Report Share Posted June 28, 2015 Talcum powder in my area doesn't actually contain talc anymore. It's cornstarch. Something about some talc sources being contaminated with asbestos, and people not wanting to put that on themselves. Link to comment Share on other sites More sharing options...
Mark C. Posted June 29, 2015 Report Share Posted June 29, 2015 Yes. Mark Link to comment Share on other sites More sharing options...
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