I 3D printed these upgrades for my Logitech MX Master 3, and now I can’t live without them

If you ask creatives what their favorite computer mouse is, there's a good chance that the majority will pick a mouse from Logitech's MX Master series. This is mainly because the MX Master series features a range of useful tools that can significantly enhance your productivity when used daily. From multiple customizable buttons to quick gestures that trigger shortcuts, using an MX Master 3 or 3S for tasks such as photo and video editing, browsing the web, and number-crunching in Excel saves a considerable amount of time and effort. I've been using an MX Master 3 for a few years now, and it has certainly made my life easier. Notably, the ergonomic form factor also helps with better handling. That said—like most products—the mouse isn't perfect.

For starters, the outer layer is prone to dust, scratches, scuffs, and cuts. Additionally, the front of the mouse is also clickable, so it ends up registering random clicks if the edges of the mouse come in contact with other objects on your desk. While they may not be deal-breakers, they can get slightly annoying in the long run. So, I decided to fix a few of these shortcomings—with the help of my 3D printer. I scoured the internet for useful accessories for the MX Master 3 and found three interesting ones that have now become mainstays. If you, too, have a Logitech MX Master 3 or 3S mouse, here are some cool accessories you can 3D print.

A bumper to prevent accidental clicks

Saves a lot of frustration

The clickable area of the mouse buttons on the Logitech MX Master 3 and 3S stretches to the end of the mouse. To add to this, the switches to actuate the clicks are also rather sensitive to ensure the mouse is easy to use and doesn't make much noise. When combined, this leads to a lot of accidental clicks when the mouse is in use and either corner comes in contact with any object. For instance, my desk has several peripherals and accessories like a keyboard, speakers, a wireless charger for my phone, etc. When moving the mouse around, the edges often end up hitting those devices. This triggers an accidental click.

Depending on where the mouse cursor is at that time, this click can end up closing an important application or document, or trigger an unwanted action. To prevent this from happening, I 3D-printed a slim and light bumper that prevents accidental clicks. It attaches to the front of the mouse using the default screw used to keep the mouse together. If you don't wish to unscrew the mouse, you can also print the included USB-C attachment that keeps the bracket in place using a small plug that goes into the USB-C port.

A case to carry the mouse in a backpack

Increased lifespan

I often work from cafés or co-working spaces, which means I commute frequently with my laptop and mouse in a backpack. For the longest time, I used to throw my mouse into a random compartment in the bag. Owing to this, the rubbery external surface of the MX Master 3 started gathering dust and lint. Additionally, other accessories in my backpack, like chargers, cables, etc., started scratching the rubber surface. The condition had gotten so bad that I had to apply a skin to cover the rubber surface.

A quick search led to several case models that can be 3D-printed for the MX Master 3 and 3S. You can pick your favorite design and print it using PLA, PETG, or even TPU if you want a soft shell case. I printed one that can be used to hold the mouse on the desk when it's not in use. When you want to carry it with you, print a shell to cover the top.

A charging dock for convenience

Plug in the mouse with a simple push

The MX Master 3 has excellent battery life, with my unit lasting upwards of two months on a single charge. When it's time to juice it up, you can plug in a cable into the USB-C port at the front of the mouse. While it is a simple task, I decided to make it more convenient. I printed a tiny cable dock for the mouse that I stuck to my table using double-sided tape.

I passed a USB-C cable through it, and the dock holds it in place. Now, every time I need to charge the mouse, I just slide it to the top of my desk, and the cable plugs right into the mouse. More than the added convenience, it just looks and feels cool.

That's not it!

A simple search on any 3D-printing models repository will result in several accessories for the Logitech MX Master 3 and several other popular mouse models that can improve the functionality or fix small annoyances. There are models that can make the MX Master 3 better-suited for left-handed users; a holder that can be mounted on Ikea furniture, and even replacement scroll wheels or buttons in case the ones on the mouse go bad. If you're familiar with designing software, you can even make custom accessories based on your requirements.