Steel framed fixed gantry draw slide build super cheap

[Steel]

For all those who don't read entire threads and have no idea what this machine will be used for, I posted this 2 weeks ago
"finished off the z axis today, i finally gave up on having supported bearings on the lead screw and mounted it directly to the motor as ill only be using this machine for wood/plastics it wont be a problem"
Wood and Plastics !!!

A_Camera, I asked for you to show me a draw slide cnc machine made of STEAL and all you posted was videos of ones made of wood !!!
"BTW, I seriously doubt you will achieve 1 micron over 12". It was a question not a referral to my cheap draw slide build.

Zeeflyboy, "You clearly aim to create a cheap machine, on that front you are succeeding" "Hopefully it's just a fun project for you, and you enjoy making stuff - which is great imo". yes your 100 % correct,
This build is not about saving money its about making something off the top of my head no plans to follow just using parts you wouldn't use in a high end cnc machine.
"Though how anyone on here is supposed to know what your end goals are when you haven't stated them is ridiculous". read the 5th post i made it clearly states I'm going to cut wood and plastics.
"By the way were you actually trying to infer that your creation will be capable of holding 0.001mm over a 12 inch disc or did I misunderstand that?". No i was just asking a question if there was a cnc
machine capable of .001mm as I make telescope mirrors for a hobby and i can produce by hand mirrors with a surface accuracy of 0.000125mm so just wondering if a machine could get anywhere near that.


As to the Axial loads in Nm on my z axis can anyone tell me what you think it will be lets say cutting pine at a feed rate of say 700mm pm with a 2 flute 6.35mm end mill and a pass depth of 4mm ? just a approximate estimate will do