Since I prefer to print the whole negative and get a black border, I’ve made negative carriers for the larger negatives (6×4.5, 6×6, 6×7). The carriers are made of aluminum, and are cut out at a workshop (the have precision milling machines ) and are carefully trimmed to the desired size using a standard file, always using a original negative, e.g. from my Pentax 67, as a template. Each half is polished so there are no sharp edges or dust that can harm the negative. The two aluminum halves are put together using a good adhesive tape. To prevent light to leak out from the Fujimoto enlarger, a simple frame of wood and paper is made. Very simple but reliable negative carriers.