Steel Frame 8' x 5' CNC - Advice Sought

[Boyan Silyavski]

No. Either do it like it is or redesign it completely for the other type of machine, where the bed is raised.

There is a reason most strong DIY builds use raised sides on the bed and the bed is bellow.

For a first build is not advisable to make the bed raised cause most possibly you will finish with a machine having a weak link somewhere at the gantry. Not that is not doable, just needs some careful considerations.

If you look at forums you will see all machines of these type are weak or crappy, even if they have ton of steel in it. Especially this is the case if you want to do aluminum.

Not to speak of the difficulties you wil encounter of aligning properly the long rails