The mouse needed a name, so it is now called the Lil Magnum!  Because it is small!

Be sure to check out the tips on successfully printing a good, light Li'l Magnum!

NOTE: I don't have an R1 to test.  The R1 has the same screw pattern and button locations as my R1 SE, but it is definitely possible that I have accidentally blocked the camera with the front end of the lens holder.  When I see a photo of the bottom of an R1 looking correct, I will post the info here!  The R1 should come in about 0.6 grams lighter than the SE.

This is obviously inspired by Optimum Tech's Zeromouse and Zeromouse Blade, but using FDM and a more affordable donor mouse.

The thumb and finger rests are in a reasonable spot for me, and the buttons are lined up well.  The shell requires A LOT of bending and finagling of the button paddles to get the donor PCB installed.

The model is parametric, but it needs cleaning up.  I want to make it easy to adjust the offsets of the finger grabbies, but it is too messy for that so far.  I will post the OpenSCAD after I get it cleaned up.

My setup printed in PLA comes in at 22.04 grams for the R1 SE with grip tape.  Add 4.3 grams for the bigger 520 mAh battery in the R1 SE+.

The button flapper paddles have less spring tension when printed with one perimeter instead of two, and the length of the plunger has been adjusted to make up for this.  I am using lightning infill, and I had to lower the “minimum sparse infill threshold” in Orcaslicer to 1 cubic mm to make sure the button arms would be hollow.  The width and thickness of the arms is dialed in for the springiness of PLA.

• v0.1 - Added a lens holder to the R1 Pro files
  • Moved the screw holes by 2mm to fit the new PCB
• v0.2 - Lowered the PCB so the sensor actually works correctly and well!
  •    Lowered the buttons to match the PCB
• v0.3 - Unimportant tweak to match the PCB height of the R1 Pro
• v0.4 - Add chamfers to buttons for durability and longevity
• v1.0 - Lots of changes that didn't manage to get uploaded until now!
  • Arms for the side grips are angled up off the mousepad
    • Arms are a bit sturdier, but removing the support material is more persnickety
  • Lens holder went on a diet
    • Lens holder now works with the R1 (fingers crossed) and R1 SE
    • Lens holder is now identical on the R1 Pro STL
• v1.2 - Reduced weight by more than 0.25 grams
  • Removed chunky undercarriage parts
    • Should be easier to support other mouse PCBs
  • Added parametric side braces

• Li'l Magnum! shell for the VXE Dragonfly R1 Pro / Pro Max

• Li'l Magnum! 22-Gram 3D-Printed Fingertip Mouse Mod For The VXE Dragonfly R1 and R1 SE at patshead.com
• Can We Compete With The Zeromouse For Under $25? at patshead.com
• Ultralight Fingertip Gaming Mice - Two Weeks With My 21-Gram L'il Magnum at butterwhat.com