My 1st DIY build

[qwertyjon]

As promised, I've been working on my design. I've decided to go slightly larger as it works out at only a few £ more. So overall size is nearer 1100x1100mm now.

Can anyone point out any obvious faults before I carry on? I've designed it with twin X ballscrews, probably going to be belt driven. I'll apologise now that the screws, don't look like screws. And I've not worked out the Z axis yet. Hopefully its a good starting point though.

The base runs on 20mm supported rail, and the gantry on 16mm. The brackets that I will need to make are out of 12mm aluminium. Will that be strong enough?

[JAZZCNC]

Can anyone point out any obvious faults before I carry on?

Yes I can point out a few things. The gantry is a little flimsy with just one piece of 90x90 but worse is the connection to the X axis bearings. Relying just on the bolts in profile won't be enough and it will need much more bracing than that other wise you'll get resonance and chatter at the cutter.
I would increase the plate thickness on the ballnut mounts and bearing plates.

Presume those Angle brackets are just for stiffening and your not relying on them to hold profile together, if you are they won't be good enough.

To be honest I would re-think the gantry single profile piece and beef it up a little.