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

---
**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)

---
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) 

---
**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.  





Folding Scalpel Pocket Knife v2.1

Folding Scalpel 2v11d__Standard.stl

I have a significantly improved version of this knife which accepts a wide range of blades, version 2.0 posted here...
https://than.gs/m/1092890

-----------------------------------------------
This is a 100% printed and print-in-place folding scalpel.   No hardware or fasteners required.  The scalpel is small, super light (about 8g) and very convenient. I have added a pressure point on the top of the blade which conventional scalpels do not typically have. This helps to give you a safe place to put your index finger and also allows you to comfortably apply pressure when cutting. It is important to note this knife, like all scalpels, is designed to be held like a pencil.

There are 3 different STLs with varying tolerances so you can hopefully find the one that prints best for your setup.  The knife should be super tight after printing.  And, freeing the print-in-place parts is a little more onerous than usual so please take care to work the parts free carefully.  Once the parts are free the knife should work for a long time.  

Inserting and removing the #18 scalpel blade is normal.  The first time inserting a blade it will be a little tight but after that, it will be very smooth.

I have just added a modified version of this file which I think will accommodate a #24 blade as well as a #18 blade.  But I need someone to test it and let me know.  

---
**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 Pocket Knife v2.1](https://than.gs/m/1092890)
[Folding Scalpel XL v2.1 (for #60 Blades)](https://than.gs/m/1110703)
[Skeleton Utility Knife (original version)](https://than.gs/m/1063352)

---
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) 

---
**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.  







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Folding Scalpel Pocket Knife v2.1

Print-in-Place Folding Scalpel