IMPELLER for Intex 638RM pump - (cartridge 28638)

This is a impeller replacement for the Intex 638RM water pump (REF.28638) .

However if your pump makes the humming noise, the ceramic shaft needs to be replaced. 

Printing the shaft is not recommended since it bends, I've tried with PLA and PETG-CF. 

How I fix it for cheap: 

By cutting the larger end of this small screw driver and facing it down since, it has the same size of the original ceramic shaft: 

I don't know how long it will last but it worked. 

Please notice: The pump will be making more noise than usual.