TZ hotend Mellow ADXL345 mount

I liked the hotend heater block clamp design of the original model, so I adapted the TZ hotend ADXL345 mount to the Mellow/BTT ADXL345 accelerometer with 44 mm mounting hole spacing. For these I have added two holes for M3 threaded inserts (max. 6 mm height). The two existing mounting holes (also for M3 inserts) can be used to mount the accelerometer to the printer bed. I have drilled an extra hole into my spring steel sheet. Note that drilling into these spring steel sheets is difficult! It did not work with a regular handheld power drill and metal drills I had available. It only worked with a carbide tipped stone/tile drill. 

Both, the mounting on the TZ hotend heater block and on the spring steel print bed works perfectly and I got excellent acceleration data for resonance compensation. 

Printed in PETG, but other rigid filaments should work fine as well. 

You can tweak and further adapt the changes I made using the public Onshape project:

https://cad.onshape.com/documents/c420bbc7a147a80c4c0fd796/w/cccdbb0fe8097e9e1bd784e2/e/9d1b9f0db6c231340fd99884?renderMode=0&rightPanel=variableTablePanel&uiState=690f73af3dfed9e8c7917e36

🔓 **Open Design Reminder** 🔓 

If you remix this project, please share it in full:  

•  🖨 **STL/3MF** — for printing
•  📐 **STEP** — cross-platform geometry for editing  
•  🛠 **CAD** — full (parametric) design source (e.g. native file or Onshape link)  

Because real maker culture is about passing the torch, not locking it in plastic.