Tandem t:slim X2 Rugged Case

Has your insulin pump screen ever shattered during sports or at a summer camp? Regular soft TPU cases are fine for everyday use, but they flex upon impact and fail to protect the screen from direct hits against sharp rocks.

This case is designed as an uncompromising "tank" for the harshest conditions utilizing the advantage of finally being able to control the pump from your mobile. It uses the concept of a hard outer shell combined with an inner floating shock mount, similar to professional protective cases (like Pelican) or heavy-duty helmets.

🛡️ Key Features:

• Hard-Shell Protection: Rigid plastic shields the screen from direct, piercing impacts.
• Inner Shock Mount: The case is designed with precise inner tolerances (5 mm on the sides, 2 mm on the top/bottom) to fit pieces of EVA foam (just cut up an old camping mat or similar). The foam absorbs the shockwave before it reaches the pump.
• Integrated Belt Loop: The belt passes directly through the back of the case. This acts as a massive structural reinforcement and physically separates the pump from sweaty clothes.
• Screw Assembly: No flimsy plastic hinges. The lid is secured using M3 heat-set inserts and stainless steel screws (Stainless (DIN912), M3, 4mm) for maximum durability.
• Barometric Breathing: The case intentionally features large cutouts for the tubing. It is NOT hermetically sealed, allowing the pump's barometric sensor to correctly measure air pressure and deliver insulin accurately.

⚙️ Printing Recommendations (Download my .3mf profile!):

• Material: Print preferably in ASA or ABS. These materials are ductile and absorb impact energy through slight plastic deformation. PETG is too brittle and will shatter. TPU won't prevent screen punctures.
• Orientation & Strength: The model is printed vertically. To prevent Z-axis layer delamination from the belt pulling, you must print hot (e.g., 265 °C for ASA), lower the part cooling fan (max 10-20%), and use at least 5 to 6 perimeters (walls) to turn this into a solid brick of plastic.

🛠️ Hardware Required:

• Pieces of EVA foam (old camping mat etc.)
• High-quality double-sided tape
• 4x Heat-set inserts (M3x3x4.2)
• 4x M3x4mm screws (DIN912, Allen/hex)

⚠️ IMPORTANT DISCLAIMER: This is NOT a certified medical device. It is a hobby project ("Accessibility Accessory") created for my son and shared with the community for non-commercial use. The case does not interfere with the medical treatment or the pump's functions. Print and use strictly at your own risk.