Toilet lid shock absorber (parametric)

I was amazed that manufacturers try to save money even on these small stuff. I noticed the other day that 3 of the 4 shock absorbers on the bottom side of the toilet lid were broken, after only 2 years of usage. They are originally a hollow and thin cheap piece of PLASTIC, not even rubber (anymore), so I decided to quickly design my own piece to replace it and do it properly this time. I only made the default overhang size smaller to avoid the need of supports, that's why you see on the comparison image that the model is slightly smaller.

I don't know if there are multiple types and sizes (probably there are), mine is regular toilet seat you can buy at multiple places in Europe. If someone wants to customize it, I also provided the Fusion 360 file, so you can adjust the height, width and length and other dimensions via parameters (CTRL-ALT-SHIFT-C on Windows or Modify → Change parameters) and create your own variation within a few seconds. The default parameters are:

• width of inlay part (which goes into the hole): 13.25 mm
• length of inlay part: 37.2 mm
• overhang width (if too large, you may need supports): 1.5 mm
• total height, including inlay: 16 mm
• height of the overhang part: 10.5 mm

Brim not required if you don't have issues with bed adhesion. If you have the same size or adjust the size of your own pieces properly, they doesn't even require any glue, mines fit just firmly and don't fall out.

Since this must carry weight (depends on your physical properties :)), I recommend to print it with lots of walls, top and bottom layers and high infill percentage. The best would be probably TPU, but since I'm already testing some sample PLA and wanted to put it under a weight test, I printed these from transparent PLA this time to see how well it will perform.

My demo pieces are printed with the following properties:

• Wall count: 5
• Resolution: 0.20 mm
• Infill type: grid
• Infill percentage: 35%
• Top and bottom layer count: 5

After more than 2 weeks, it performs well. However, I will print them from TPU, too, to fit the purpose better and to have a permanent solution, and also for less impact noise when switching modes of the toilet. :) 

Edit: after a few months, the PLA versions broke on the front part. I reprinted them from TPU, I guess it will now last for eternity and beyond.

I also included a 4 set project for PLA and BambuLab printers.

If you have any questions or notes, let me know!

Happy printing! :)