Coverslide Holder

Cover slide holder
20 slides, 24x60x0.015 mm
Let me know if you use and have any suggestion about how to improve this simple, but very useful holder that can be used to store or clean your cover slides.
I would be happy to contribute more if requested and improve this things. That's the very first design.
**Update
Use the version 2.0, since the first one is ~1mm smaller than it suppose to be. I will keep the file anyway for development references.