big budget cnc

[Desertboy]

i need the gantry to be this way because my workshop( ist at my parents house) and if i go home then my mothers car is parked in the garage so i this way i can still have a cnc .

3m's is just too long though and you will be creating yourself a world of trouble, there are plenty of machines out there with 3m gantries they are very very chunky and use serious slides the cost of the gantries are far beyond what most of us spend on our entire cnc machines.

If you build it like you suggest it will not work very well at all and you will spend a lot on a frame you can't use.

https://www.kickstarter.com/projects...foot-cnc-machi

This seems like it might be more useful to you although I would never consider this suitable for real production (I thought it looked crap but mate thought it was ideal for a small workshop for occasional jobs.) It might be something that ticks your boxes given the lack of space and tight budget.

There is another choice you could make the gantry 1.5m's and mount the CNC so it folds to the wall when not in use you can get more space and only use when the cars is not there.

You probably don't want to cover your mum's car in sawdust anyway if you still want the cnc machine their in a months time ;)