Passive Pen Tool
This is a pen tool for drawing with pens up to 13mm in diameter. It does not have any active components, which means the machine's Z axis can be adjusted to "lift" and "lower" the pen. This tool has a built in laser cut flexure, allowing you to increase the pen tip pressure by increasing the push distance slightly, for about 2mm total travel.
Parts to Buy
All parts to buy are in this spreadsheet.
Assembly Tools
TODO
Laser Cut Parts
All Laser Cut Parts should be cut from 3.175mm (0.125in.) Delrin. If you are certain that your laser cutter applies automatic kerf compensation (rare), cut the original DXFs. Otherwise, cut the offset DXFs. (If you are uncertain, cut the offset DXFs.)
To download the file, right click, and select "Save Link As."
| Quantity | Name | Original DXF | Offset DXF |
|---|---|---|---|
| 2 | Compression Flexure | Original | Offset |
| 2 | Pen Flexure | Original | Offset |
3D Printed Parts and Settings
Common Settings
- PLA
- 0.4mm nozzle
- No supports
- 0.2mm layer height
- 6 perimters
- 20% infill (any pattern)
Parts and Special Settings
Pen Tool
| Quantity | Part Source | Note |
|---|---|---|
| 1 | Pen Tool Base Tool Plate | print with support material |
| 1 | Left Parking Wing | |
| 1 | Right Parking Wing | |
| 1 | Pen Holder |
Parking Post
| Quantity | Part Source | Note |
|---|---|---|
| 1 | Parking Post Base 47mm | |
| 1 | Tool Holder 47mm |
Assembly Instructions
TODO
Wiring
None!
Software Configuration
There are a host of software projects that can generate GCode (using Z for pen up-and-down), many of which are listed on [1]