Logitech MX Mechanical – Official CAD Keycap Reference Set

Official Reference CAD Keycaps for Logitech MX Mechanical

Provided as part of Logitech’s Adaptive & Accessibility Initiative, this package contains official 3D CAD reference models (dummy envelopes) for all keycap shapes used on the Logitech MX Mechanical (Full-Size) keyboard.

Whether you want to design custom textured keycaps for accessibility, raised tactile indicators, or personalized key legends, these starter files give you the exact outer dimensions and mounting geometry to build upon.

Included Files & Quantities Guide

To keep download sizes lightweight and easy to import into your CAD software or slicer, we provide one reference STEP file for each unique keycap geometry. Simply import the required keycap size and duplicate it in your slicer as needed!

Here is the breakdown of the 10 included files and where they go on a standard full-size layout:

• 1U Standard (89 copies): Logi_MX_Mechanical_Keycap_1U_Standard_x89.step — Used for Letters, Numbers, F1–F12, Arrows, Navigation, and most Numpad keys.

• 1U Homing (3 copies): Logi_MX_Mechanical_Keycap_1U_Homing_x3.step — Keys with tactile dots for finger placement (F, J, and Numpad 5).

• 1.25U Bottom Row (7 copies): Logi_MX_Mechanical_Keycap_1.25U_BottomRow_x7.step — Bottom row modifiers (Ctrl, Win/Opt, Cmd/Alt, Fn).

• 1.5U Tab / Slash (2 copies): Logi_MX_Mechanical_Keycap_1.5U_Tab_x2.step — Tab key and \ (Backslash).

• 1.75U Caps Lock (1 copy): Logi_MX_Mechanical_Keycap_1.75U_CapsLock_x1.step — Caps Lock key.

• 2U Horizontal (2 copies): Logi_MX_Mechanical_Keycap_2U_Horizontal_x2.step — Backspace and Numpad 0.

• 2.25U Left Shift / Enter (2 copies): Logi_MX_Mechanical_Keycap_2.25U_LeftShift_Enter_x2.step — Left Shift and the main Enter key.

• 2.75U Right Shift (1 copy): Logi_MX_Mechanical_Keycap_2.75U_RightShift_x1.step — Right Shift key.

• 2U Vertical (2 copies): Logi_MX_Mechanical_Keycap_2U_Vertical_Numpad_x2.step — Vertical Numpad + and Numpad Enter.

• 6.25U Spacebar (1 copy): Logi_MX_Mechanical_Keycap_6.25U_Spacebar_x1.step — Spacebar.

Design & Printing Tips:

• Non-Destructive & Reversible: Swapping keycaps on mechanical switches is a standard, fully reversible action. Always use proper keycap puller tools to avoid damaging the switch stems.

• Printing Material: PLA or PETG works great for custom keycaps. For ultra-smooth surface finishes or high-detail tactile icons, SLA/Resin printing is recommended.

• CAD Compatibility: All files are provided in standard STEP format for seamless editing in Fusion 360, SolidWorks, Rhino.

Logitech Legal Disclaimer:

By downloading any CAD files provided on this page or by submitting any entries to this competition, you agree to the terms of this disclaimer.

Summaries, links and CAD/3D printing files made available on these pages - including parts that you print yourself or have printed for you by a third party (such as mounts, supports, assistive attachments, add-ons and other accessories) are not official Logitech products and Logitech does not endorse, guarantee, or support any of these products, designs or files. Use or print these files entirely at your own risk.

Logitech disclaims all liability for any personal injury, property damage, or device damage resulting from the use or printing of these files.

Any permanent modifications made to your Logitech device could void the product warranty. Logitech also disclaims all warranties related to any third party designs, including all claims related to intellectual property infringement, such as copyright, trademark, and patent.

You are responsible for reviewing the terms, conditions and privacy policies of the sites where any independent designs are hosted, as these will govern their use.

By submitting ideas or files to this competition, you grant Logitech a non-exclusive, royalty-free license to display and share your submission for promotional and contest-related purposes.