TIL that grain direction actually matters, and I feel silly for arguing about it
I always figured grain direction was one of those old printer superstitions, like blowing on a hot print head to cool it down faster. Last Tuesday a customer brought back 500 brochures because the cover stock cracked along the fold on every single one, and I mean all 500, not just a few. The guy who runs the press next door took one look and asked if I'd loaded the 100lb gloss with the grain running the short way, and sure enough I had. He showed me how the paper bends way easier with the grain, and folding against it is basically asking for cracks. I re-ran the job with the grain going the long way and zero cracking, not one. So was I the only one who thought grain direction was nonsense until it cost me a full reprint?