I have had this problem so have to ask- with heavy card stock most of the time I do not get a clean fold. I get a rough looking edge when I fold, I have tried making a score line with a bone folder or scoring tool but with the heavy card stock I get the same results. It is so frustrating and I have some cards I folded and got this nasty looking edge so ended up cutting them apart and making card fronts, then glued those to different cards
That looked better but I felt so wasteful basically using 2 thickness of card stock on those cards. Please tell me what am I doing wrong to make the edge not fold smooth? Maybe I need to cut that card stock just for glue on embellishments or ATCs. Thanks for any suggestions.