We purchased a no frills food vacuum sealer not only to keep our Costco meat purchases from frostbite  but also to vacuum seal my filament reels. Though the more expensive sealers come with roll holders and bag cutters, our base line model did not. Once again, time to call up FreeCAD and create a useful kitchen appliance. 

My first pass produced a bag cutter that requires keeping a separate Exacto knife around to perform the bag cutting. I decided not to go hunting around for the knife every time I wanted to bag my food, so using a spare blade, I created a blade holder that slides along a modified top guide. Now the cutter is ready to go whenever needed without any other part.

I used SUNLU PLA+ and therefore could not snap the jaws closed, but just deflecting the top guide over the bottom's lip works perfectly. 

If you want to keep a knife handy just print the top and bottom, snap them together and you are good to go. 

If you want to take extra time and make the full blown cutter, print out bottom, top slider, left & right blade holder and the blade cap. Snap a blade into the holder, position the holder parts over the top slider and slip the blade cap on. You may need to clear out string in the slider grooves but after a few times back and forth the cutter assembly will slide smoothly over the top guide.