Thank you

I have a similar module but has different size.

in general, your 3D print is good, but i found your dimensions of TinyRTC-Ds1307 was different from my real module.
however, it was not a fatal proble...

The module I have is 27x28mm. The model is 25x28mm. Holes ar 1mm more apart. 
This model is from aliexpres

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Good model.

Excelente trabajo.