About this 3D model
This is a small coffe tamper i made for my capuchino machine, it has a 49.3 diameter in the top of the stamp, (which is like .2mm smaller than the cup itself) you can scale it on the X and Y axis to make it fit nicely.i suggest using a higher infill for the handle, i printed mine with 50% on the stamp and 80% on the handle with two separated procesess on S3D.