AirArm
This is an articulated arm used to direct the flow of air on bench tools (such as scroll saws) to blow saw dust away from the blade. It was designed and initially installed on a low-cost Ryobi saw from Home Depot, but isn't limited to any particular manufacturer or type of tool. If there's a place to mount the base, it will work. Even if your tool doesn't have a built-in air pump, you could simply use an external pump like those used on aquariums.
The SCAD files can be used to modify the dimensions of the base and tweak some variables in the end effector (such as tubing diameter and arm length).
Assembly
Print "base.stl", "end_effector.stl", and as many of "BS_Joint.stl" as required to extend the arm to the desired length. Connect the pieces together, and use double sided tape to attach the base plate to a suitable location on the tool.
If the ball and socket joints are too lose when the tool is operating, they can be tightened by wrapping one or two layers of thin tape (such as packaging tape) around the ball ends. Alternately, shrink tubing can be used for a more robust result.
Credits
This project makes use of the ball and socket joint (BS_Joint.stl) from the "PCB Workstation with Articulated Arms" by Giuseppe Finizia.
License
This project inherits the Creative Commons Attribution-NonCommercial 3.0 Unported License from "PCB Workstation with Articulated Arms".
You are free to:
- Share — copy and redistribute the material in any medium or format
- Adapt — remix, transform, and build upon the material
Under the following terms:
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Attribution — You must give appropriate credit to all contributors to this project, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
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NonCommercial — You may not use the material for commercial purposes.
Notices:
You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation.
No warranties are given.