I've an Espresso Machine Delonghi dedica EC685.
I bought cheap ceramic blade grinder. It has own container.
But it's really annoying step to transfer grounded coffe from container to portafilter.
So I've preapare a stand for my 51mm portafilter and grinder.
I hope it will be useful for you too.
Bottom and top stand only needs 2pcs 3mm screw to assembly.