I needed a cover to protect my chisels and I didn't see the sized I wanted.  These can be adjusted in Fusion 360 under modify > change parameters.  They can be customized to length, height, and chisel width.  I created a version for both metric and SAE chisel widths, though all other dimensions are still in metric.  Fusion 360 can do the conversion if you put in .5 inch, it'll do the conversion for you.  I've included the files for a 5/8" and 5/16" chisels.

Print with the insertion hole upward to minimize overhanging problems.  The only real difference between the two files is the text printout, which is tied to the chisel width.  If the text doesn't update, you might need this add-in for Fusion 360:

https://apps.autodesk.com/FUSION/en/Detail/HelpDoc?appId=2114937992453312456&appLang=en&os=Win64#generalinfo

This was my first attempt and modifying parameters in Fusion 360.

Printed in PETG with 0.4mm nozzle at 0.2mm layer height.