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Small & Simple Bolt Action Pen for Parker Refills
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Mostly a demonstration of a refined bolt action geometry, this pen is compact and nicely fits Parker refills.
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Model information
- Source
- Printables
- Category
- Tools
- License
- GNU General Public License v3.0
This is a simple pen! It's light small, and feels great in the hand. It's about the size and diameter of a Parker Jotter, but much much lighter.
The CAM for the bolt action has been refined over a plethora of iterations to create something that feels smooth with a nice click!
To assemble this pen you'll need…
- A Parker G2 style refill or similar
- An M3x6 or M3x8 bolt & Allen key
- A Parker spring, or similar (I used a spring from a pilot precise that I stretched a bit)
- (OPTIONAL) An M3 Tap - You can just thread the screw into the plastic carefully.
To assemble:
- Print out the STL, both parts are merged and in correct orientation. Some printers may benefit from support around the bolt action geometry.
- Remove any elephants foot from both pieces using a hobby knife, file, or similar
- (OPTIONAL) You may need to run a ¼" drill bit through the back of the pen body if you cannot slide in the button body.
- Tap the 2.5mm hole on the button body
- Remove any plastic end cap from Ink refill
- Slide spring into pen body, followed by refill
- Insert the cylindrical button body with tapped M3 hole into the pen body. Make sure that the side closest to the hole is down.
- Screw the M3 bolt into button body through the “J" on the pen body (This makes up the CAM mechanism for retraction)
- Make sure action is smooth and try different springs if you feel binding.
- Test it out and write something!