I just went to http://onshape.com and clicked on sign up and started another account.
And as usual for me I found it.
I realy haven’t spent time w/ OnShape yet so still new to it.
This is a great model to help me along 
@Javier_Prieto That is a problem, yes.
@Evan_Nguyen They seem to block certain domains. Previously I tried to use my normal email-adres, which obviously bounced, but just now I tried with my google mail-adres, and voila! I’m in. So it is open, just not open for the whole world.
Yeah I used my Gmail for my account.
So it’s not closed, but half open.
Now I just have to figure out how to break-up the plates to accommodate my 150mm diameter bed 
ho yes. sorry , we didn’t make plates for different sizes printers ( we didn’t do at all in fact because we use botqueue now and print parts one by one ).
I think we are going to make two or three assemblies for different plates , like 150 ,180,200 . It’s not so much work …and dynamic from the separated parts 
if you know a little blender , you can easy import the all stl, switch to edit (tab) , then p , then choose loose parts, then tab again. You will be with all separated parts and from top view, it’s easy to rearrange all.
Cool. I was able to download the plate as separate .stl files.
Nice, I can now make my own plates.
ho yes i forgot we could do that too. But , when separated they are not well oriented ( it takes the source part , not the assembly version). You will need to reorient them like in the assembly maybe.