The bosstop mug press is assumed to have an 11oz capacity heat wrapper. This can be changed to a different heat wrapper size, but you will need to purchase the heat wrapper online (and hope that it is compatible).
There is another mug press in the hackspace, which has two heat wrappers.
The heat press seems to fit 15oz mugs with the same wrapper and a little adjustment.
The conical wrapper for the Chinese “meat press” does not work well with marrow-type mugs, see image. Maybe it would work better if it was properly taped on, as this image was not.