last one for today better get on with my real work. I added the X bearings and bits and ran the simulation. Looking good. So now to think it through again and detail the parts a bit better. Add some internal shear webs to the gantry and make the Z plate much stiffer. I used the mini z plates for the X axis as they were there. But they do need to be longer and better braced in Round 2.Probably drop the nominal design load to 50kgf as well. Cheers Peter S