This folding scalpel handle is stronger and stiffer and can accommodate all #4 scalpel handle blades (up to 60mm in total length).  I have tested it with #18, #20, #21, #22, #23, #24 and SwitchBack blades.  

The pivot utilizes an offset radii design allowing it to print easily and still rotate tight in the open and closed positions.  Check it out!

100% printed - no hardware, fasteners, or adhesives required.  No support required

Print Settings:

I have tested this design on multiple printers using PETG, ABS+ and PLA.  Print settings can vary significantly between users so please note my settings and let me know if you are having difficulty.  I am committed to helping everyone get great print results to the extent I can so please contact me if you are having issues.
  
Nozzle = 0.4mm
Layer height = 0.2mm
Line width = 0.4mm
Wall count = 4 (1.6mm)
Top and Bottom Layer Count = 5
Detect Thin Walls = ON    (Print thin walls in Cura)
Wall Generator = Arachne
Infill = 40% Cubic
Ironing = ON
Support = All required support is designed into this product  
Print Orientation = As per the STL files

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**Related Links**
[Logical Utility Knife version 2.0](https://than.gs/m/1448655)
[Scalpel Station Widget - with Auto Blade Removal and Capture](https://than.gs/m/1089744)
[Folding Scalpel XL v2.1 (for #60 Blades)](https://than.gs/m/1110703)
[Skeleton Utility Knife (original version)](https://than.gs/m/1063352)

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Please [join the LogicalPlanet Discord community via my linktree](https://linktr.ee/logicalplanet) to discuss this and any other LogicalPlanet projects, upcoming projects, ideas and anything else related to LogicalPlanet.   

**[https://www.logicalplanet.com/](https://www.logicalplanet.com/)**
email me at [logicalplanet3d@gmail.com](mailto:logicalplanet3d@gmail.com) 

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**Revisions and Updates**
I occasionally update and revise my designs. When I do, I’ll document the changes here. Check back periodically for the latest revision notes or if you’re experiencing any issues with a model.  

2024-07-26 Update: This is now version 2.1 of this knife which now has improved geometry to help keep the blade closed and or opened as well as a detent on the closed side to minimize the chances of it partially opening in your pocket.  





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Folding Scalpel Pocket Knife v2.1