Made some progress on the mill, decided to fix the gantry as I believe it will give more rigidity than a moving one! So now the table will move not the gantry. Unfortunately lost 20 cm or travel but I think its worth it. Hopefully not long before its cutting!
Nice!
Thanks!! @Eugenio_Villaverde hope you are having a lovely weekend! 
I would add some ribs to stiffen the upgrights or make them box sections. Same for the blocks that you have the steppers on.
Interesting design choice. This kind of setup works well for 3D printers. However, this will be moving much heavier materials. You may need to beef up the motors moving the bed (or add gears?) to make it work well.
@David_Kirtley nice idea! I’ve got double plywood on the uprights but I thing they could benefit from some more! Running out of wood at the moment! 
@SirGeekALot I am somewhat concerned that the motors are a little too small to hack this job! I bought them years ago to CNC my proxxon mill and decided to use them for this now. The green motor on top is the largest that exists to my knowledge before going up to nema 23s. I am almost certain that I’m going to need a lot bigger ones for the steel version after this!
Oh wow. I hadn’t noticed how long it is–that’s ridiculous! You might be ok with that if you keep the speed low.
You should be good with those. The yellows are real beasts when wired in bi-polar parallel. I’m running greens on mine and its moving a steel frame with 3 sheets of 3/4" MDF for spoil board and then whatever its cutting.
@Joe_Spanier thanks! Haven’t used these yet in this sort of situation but glad to hear they should be able to do it!!
travel is nice but accuracy is more critical.
@Sam_De_La_Haye Unless you are just trying to use up plywood, the idea is to change direction rather than adding more material. The real load is carried by the surface and not the material in the middle. Think of an I-beam, tubing, or angle iron.
@Paul_Frederick couldn’t agree more!
You have used plywood and the vertical pillars for the gantry don’t seem to have a lot of contact with the base. Plus you are moving your rig around Don’t you think you might loosen up the attachments and the you may get some wobble down the line? just a thought