Use this Torque Wrench Handle to tighten your bi-metal Bondtech CHT nozzles. More
Bondtech torque wrench handle for bi-metal nozzles
The main feature of the BiMetal nozzles is that they are made of two different metals: copper, which is a soft metal, and hardened Steel, which is a tough metal. The copper provides the nozzle with enhanced thermal performance, while the Vanadium Steel gives it strength and resistance to abrasive materials. However, the copper is the weaker link in this combination, making the nozzle more prone to breaking when tightened with too much torque.
To understand the problem better, we decided to test different versions of BiMetal nozzles to measure how much torque is necessary to break them. Our testing revealed that a regular torque wrench may apply too much torque to the nozzle, causing it to break.
The Solution
Our solution to this challenge was to design a torque wrench that delivered enough tightening torque to install and remove a nozzle without going over the breaking point. To do this, we printed several design iterations of the torque wrench and tested them to measure the delivered torque.
After testing several prototypes, we chose a design that provided the perfect torque and tightened the nozzle without breaking it. In our tests, we saw that the right amount of torque should be around 0,5 to 0,8 Nm. After creating the mesh and geometry files, we FFF printed and tested some torque wrenches samples, and we also did it with the SLS manufactured parts we’ll include in our purchasable tool.
By slicing, printing, and post-processing the parts, we created a torque wrench perfect for tightening BiMetal nozzles without breaking them – the optimal amount for proper tightening and longevity.
This products includes 4 plastic parts, 3D printed with SLS using the PA12 Glass Filled material.
Contains the following parts:
- Handle LID
- Handle KNOB
- ROTOR for male quarter inch SQUARE tool bits
- ROTOR for female quarter inch HEX tool bits
Always use a metal tool bit applied to this Torque Wrench Handle to tighten or untighten your nozzle.
Know more about this tool here:
How To Properly Tighten A Bondtech BiMetal CHT Nozzle
