56mm Wrench for M36 Nuts

Description

I designed and 3D printed a wrench with a 56 mm jaw size, intended for an M36 nut, after experiencing a leak in my underfloor heating manifold. I had several tools available, including an adjustable water pump pliers, but it could not be adjusted precisely enough.
As a result, I was unable to loosen the nut properly and the nut even became damaged.
It was already late in the evening, none of my neighbors had a suitable wrench, and all stores were closed.

Shutting off the main water supply until the next day was not an option.

Because of this, I decided to design and print a wrench immediately.
The wrench shown in the “video” is the first version.
Shortly after successfully loosening and tightening the nuts to fix the leak (replaced worn gasket), I decided to create a second, improved version with no play in the jaws and holes in the handle to reduce print time and material usage.
 

I recommend printing this wrench and securing it with a zip tie near your underfloor heating manifold.
you never know when you might need it!

Print Details

• Material: PLA
  (For this application, PETG would be my preferred material due to its higher durability,
  but PLA was the only material available at the time.)
• Infill: 100%
• Perimeters (Walls): 1
• Infill Pattern: Rectilinear