Poured/casted metal door handles

Dear all,

i came across these beautiful door knobs and handles by Alfred Sahlen.

I am now looking for a solution to get this poured/liquid metal structure based on 1 point for the knob/ 2 points for the handle. Ideally something with random seed. I have tried a lot with metaball, but it didnt work very well.

Thank you so much in advance!