u/PsychologicalDrag439

For those in the UK, where do you get your grit from? I’m new to this (very addictive) hobby and part way through stage 1 but will need to stock up soon. My first lot of grit is from Polly Plastics which seems fine so far but was looking at ordering my next batch from Polished Rocks. Has anyone used these before? Can’t see many reviews online.