YOU CAN BUY PATCH BLANKS, BUT I JUST USE A PIECE OF FABRIC WITH 3.0 CUTAWAY BACKING ABOUT THE SIZE PATCH I WANT, PUT "DAD" IN MIDDLE OF IT, THEN RUN A SATIN STITCH AROUND THE PERIMETER, TRIM AS CLOSE AS POSSIBLE OR WHEN SEWING TUCK MATERIAL UNDER AS SEWN. HOPE THIS HELPS. IF YOU NEED NAME OF PLACE TO BUY PATCHES JUST PM ME.
THANKS AND GOOD LUCK
DONNA