Ya know, I just had my builder ask me if I could sand down the building peels for him, he said he is getting splinters when placing it in its storage between uses spot.
I had him grab a new green 3M scuff pad and had him smooth out the edges that are biting him so no more splinters.
Other than that, I have never done anything to a peel before use.
To clean them, we just use a dough knife/table scraper to scrape it down when needed, we dust our building/launching peels with semolina to get the dough to slide into the oven easier, We did use corn meal for a while, but the burning and smoke generated by it was obnoxious, we found that the semolina isn’t as acrid if the oven does not get brushed immediately after each pie comes out and it burns.