Utility Blade Handle - Tool-less Blade Changing

*UPDATED APRIL 2026*

V 05

Same basic design but with a spring-loaded locking retainer for the blade.  Two-piece design.
Just superglue the back end of the spring into the top of the handle (locate the peg on the spring into the hole in the handle recess). 

Now the blade retainer always locks into the blade and never loosens.  

In use, press your forefinger on the front part of the retainer and the blade will never move within the handle.

I've been using this handle with many hundreds of blade changes for a couple of years and nothing deteriorates.

Download the files that end in 05 for this new improved version.

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Blade Handle for Stanley type (utility knife) blades with no retaining screws.

I change blades very frequently and it takes a few minutes to do so (and a screwdriver or  coin or somefink).  So I woke up in the middle of the night with a thought bubble floating over the bed…

I used PTEG (Prusa recycled) filament at 0.2mm layer hieght (0.4mm nozzle) and 75% infill.  Brim on the Guard and Lock.  Support under the notch in the Handle.  No skirts.

The Handle must be aligned upright with the back on the printer bed, the Lock aligned with the grippy top on the bed and the Guard with its flat edge on the bed so the blade groove is upright.

You will need to file all the surfaces on the Handle and Lock that meet to enable a perfect fit without any play it should be a tight fit that will improve with usage.  I applied a smidgen of grease (the stuff that came with the printer.  This prevents the Lock from sticking.  There is NO play with the blade.

It uses sharp blades so, obviously enough, be carefull when squeezing the lock on.  Best done after you've applied the Guard.

Regards, Paul