Shower Curtain hook, 52x32mm and actually printable

Rationale:

I found a couple of hooks here but they were fully round and unprintable because of too low contact area with the printer bed.

OR, they didn't state their dimensions and I could not immediately see if they were useable or not.

SO,

Here is my version. 

If you have trouble with warping there is also a version with a small easy to remove tab.

Print Settings

I printed these with a 0.6mm nozzle but they are perfectly suitable for 0.4mm nozzles too.

My first layer is 0.3mm and other layers 0.24mm. That is why the ‘antiwarp’ tab is exactly 0.3mm high.

Otherwise, both PLA and PETG work fine.

Onshape document: Click Here