Ohem Posted February 1, 2018 Report Share Posted February 1, 2018 Hi there, I’m very new to pottery. My wheel keeps putting black (grease?) onto all of my pots and sponges! It might be normal but it’s making me a bit worried! Link to comment Share on other sites More sharing options...
neilestrick Posted February 1, 2018 Report Share Posted February 1, 2018 Clay is abrasive, so as you run your sponge over the wheel head you're essentially sanding off a tiny bit of the aluminum, which appears black. No worries. Link to comment Share on other sites More sharing options...
Pieter Mostert Posted February 1, 2018 Report Share Posted February 1, 2018 This has come up before; see this topic. Link to comment Share on other sites More sharing options...
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