Personally I wear a long (knee length) jacket from work, nylon mix material - chips fall off and "wrapping it round a tree" works on getting the dust out! That or a cotton boilersuitr (all in one thing) from the maintenance department - this lets me tuck my boots inside the legs - saves on getting chips in the steel toe cap boots I wear!
My friend-turner Jon wears a fisherman's smock on back-to-front. The pockets are then at the back, and there's a knitted / elasticated neck tight to your throat. He also keeps a golfing glove to stop chips burning his left hand, and a wooly hat in the other pocket! (he learnt about the wooly hat from me - because I suffer cold temperatures very badly).