I’ve never been one for fully graphical CAD programs, I’ve always designed things in OpenSCAD and left it at that, but I always found it a little on the limiting side, as my Maths is horrendous so I can’t do all the fancy stuff. With the advent of me building a MPCNC at some point in the future, was looking for a that starts of a new work flow chain that could do 3D Printing and CNC design that works on Linux. I’ve known about FreeCAD for a while and have looked at it before, but I couldn’t get my head around it. Somehow, today, though it just clicked. 7 or so hours later, I’ve ported the FB2020 Extruder carriage over and made a few improvements. It’s yet to be printed, I have it in S3D atm, there’s probably going to be a few weak spots but we shall see. I think from now on it’s FILLET AND CHAMFER ALL THE THINGS…
The more FreeCADers there are the better it works
It’s going to take a while but the rest of the FB2020 parts and my work designs will be moved over to FreeCAD. A lot of it is the fact it’s somehow become intuitive to use and my designs will no longer be blocky messes.
@Ax_Smith-Laffin sharing blocks and assemblies helps build a better world 
I’ve recently been playing with OnShape. It’s cloud based. Runs in any HTML 5 browser. However I experienced 2 crashes. Once in FireFox and once in Chrome. I still prefer FreeCAD.
Have you tried Autocad Fusion360?
freecad is awesome, just not overly intuitive to many views and its hard to know what to do in which view, i found the only way i could figure it out was to watch youtube videos after that it was quite easy 
Once you get beyond using basic shapes to construct objects and you use sketches to extrude and pocket faces then FreeCAD becomes more flexible.
The addition of property expressions using spreadsheet variables (introduced in 0.16) is a great leap forward for parametric design too.
It’s nice to see more people adopting FreeCAD for significant size designs. Well done Ax!
@Neil_Darlow - what helped me transition is the integration with OpenSCAD. In the past 12-15 hours, I’ve managed to convert half my work designs over due to this. The workflow is just so much quicker.
You have have seen the light!
Congratulations!
Now look at the FEM module of FreeCAD!
(Yes, FreeCAD still looks like a 1996 software with these icons)