Qidi Plus4 adjustable belt tensioner

This design utilizes the stock spring itself but allows the user to adjust the tension with a screw. I have remolded the original model so that there is more material near the top and have added the correct hole size and depth for the M5 insert. 

I want to Thank Jerky_FPV for their time and hard work creating the original models!

I feel that this should be a required mod for the Qidi Plus 4. You may agree with me when you start having layer shift from loose belts. 

Please leave me a "like" and Thank you for downloading!

Pre-Assembly Notes:

• The models were designed to be printed upright at 0.2 LH, 30% 3D Honeycomb infill. 
• I used supports, Tree/Slim. Super easy to remove. 
• I used an insert press at 330°C. Be careful at this temperature and press slowly.
• You can use the stock push piece instead of the included “insert” model.
• The tension starts at zero and allows up to 20 mm of pressure to be applied to the spring.
• I printed this model out of ASA. ABS, Nylon, PET(G) should also be suitable. 
• Be aware and pay attention when removing the stock tensioners. They are spring loaded so things can go flying fast and far.

I have a belt tension meter. You can print one or buy one. There are many of both to choose from. The most important part is that the belts are the same tension (which is why I don't like the springs)

Hardware required for each tensioner assembly:
 

  M5 x 35mm (socket or button head)
  Two M5 x 10mm threaded inserts
  Two M3 x 16mm (socket or button head)