Hi. The missus using the hubby’s login here.
I am having really good outcomes removing/reducing charring and soot by swirling the cut pieces in a tub of clean kitty litter (unscented, clumping). I peel the protective paper after the litter “bath.” My crevices and corners are cleaned and other than needing to lotion my hands at the end of a project I’m happier with this method to reduce char than any other I’ve tried.
I’ve gotten a lot of help from the other GF users and hope my contribution saves someone else some time and bother.