[skrubol]

Thanks for your feedback !

It´s a welder friend of my brother´s who´ll charge just about USD 60 for labour, and if my calculations are right, a single bar of 20' is plenty steel (roughly another USD 30).
I think I'll have it made with 3mm thick all around, for peace of mind.

Regards !

Wow, either steel is a lot cheaper there or I'm getting quotes at the wrong place. If you can buy by the uncut 20' it's probably cheaper to go with all 3mm rather than mixing, and easier to weld to boot.

[jwatte]

It might work, especially if you use mist instead of flood cooling.

I'd be a little worried about load rating of the cart, mainly because the connectors seem to just be a couple of rivets?

Mill plus steel plate plus work and workholding could get to maybe 600 pounds?

Are you getting this to make parts for the local economy, or mainly for fun?

[Cvitanic]

It might work, especially if you use mist instead of flood cooling.

I'd be a little worried about load rating of the cart, mainly because the connectors seem to just be a couple of rivets?

Mill plus steel plate plus work and workholding could get to maybe 600 pounds?

Are you getting this to make parts for the local economy, or mainly for fun?

For fun, for prototyping, as an upgrow from 3D printing, but mainly introducing CNC machining to my area. AFAIK there are only CNC lathes around (just two of them) so this would be the first CNC mill available in a radius of over 1000 miles. I see it as an opportunity to evaluate the need for this kind of service, sort of in a "Lean Startup" way (Fail soon, Fail cheap).