I wanted a cheaper alternative to regular boxcutter blades and had a bunch of spare razors lying around, so I got an idea to make a small utility knife that uses them. 

Each razor can be placed in 4 orientations, so when one side gets dull you can switch it to another 3 more times. I used the RK shaving razors that I got from Henson Shaving.

Parts 1/2 are the main body, 3/4 & 5/6 are different sleeves and lids. 

For best quality, the sleeves and lids are best printed horizontally with no brim. I recommend reducing outer wall printing speed a bit too. If you want to have your baseplate pattern visible on both sides of the main body don't forget to flip Part 2 in the slicer like I did three times.

Maybe this will be useful to someone, if so - enjoy.