In an effort to make publicly available what should be, I am sharing the Fusion 360 source file for the Solenoid Gryphon. I also exported the pieces that appeared relevant to a STEP file for CAD interoperability.
Note that this source predates Egghebrecht contributions - all changes made after this release by Egghebrecht were done in TinkerCAD and no source is available.
It is up to you to sort through these files and make any necessary adjustments - I am just the messenger.
The author remixed this model.