Medusa-Toolhead (Apex Mod)

This project adds several features to Ch4rlesB's Medusa Toolhead.

• New clip-in belt mount design
• Optional bottom support brace
• Added support for ebb36 toolhead board (keeps original support for umbilical and Hartk board)
• Lowered X endstop so that it activates against the Y carriage block (removes need for endstop flag)
• Strengthened zip tie slots
• Added right-side support arm
• Resized heat insert slots from 3.9D -> 3.8D

medusa-apex-changes.mp4

New files are under the ./Apex_Mod folder:

• STLs
• CAD

All other STLs (not modified by me) can be found in the original ./stls directory

New clip-in belt mount design

I'm not a fan of most toolhead belt mounting designs. I designed this solution to be:

• Light-weight
• Strong
• Semi-toolless
• Easy to assemble

Insert the belt into the cavity, and slide in a printable clip to hold it in place.

23-06-08.12-34-25.3243.mp4

Installation tip: The two front clips sit between the belt and X gantry, and might be difficult to install if you have big fingers. I use a screwdriver or thin wrench to keep the clip aligned while sliding it into the cavity.

(optional) Bottom support block

UNTESTED

The original toolhead seemed to have excessive Y wobble during fast printing. The fan duct provides some support, but the duct itself is cantilevered from the back and seemed to result in a "diving board" board effect.

This support block aims to reinforce the front of the toolhead and minimize any bouncing/wobbling.

The block is attached using two m3x35mm screws, so it does add some weight. More testing is needed to determine if it provides any real improvement.

CAD

I tried to keep a tidy f360 timeline on this project. With some exceptions, most features are contained in their own group and labeled accordingly. You should be able to delete/change most features without affecting the rest of the model.

BOM

Uses the same hardware from the original project, plus:

• 2x m3x35mm screws (optional - bottom support block)
• +2 heat inserts (bottom support block)
• +2 heat inserts (for ebb36 + hartk/umbilical support)

TODO

• Input shaper testing (with and without bottom support block)
• Add support for 1515 gantry
• Beta testing - any volunteers? 🙂

LICENSE

All files released under the same GNU General Public License v3.0 as the original project.