New Build Log ... 2440 X 1220 X 300

[Wobblybootie]

Thanks for the pointers.

Okay, let me get this right. Minimum 80X80X5 steel box ... Build frame with bed set to give max Z needed directly off the top of the frame (I haven't worded it very well but I know what you mean).

R & P for X and Y with Lead/Ballscrew for Z. Hewin rails on all Axis. 15 or 20mm or what?

Rails mounted on face of Gantry or top and bottom, which would keep Z close to Gantry?

I thought thick Ply for the bed with replaceable MDF as a spoil board.

The machine will only be used to cut Ply, MDF(Ugh!!!) and natural Timber.

Good thinking re running the gantry past cutting area for edging etc.

I already know the maximum dimensions/diameter that the 4th axis work requires so maybe I can build it into the walls of the frame parallel with the Gantry(the work is not complex or detailed, imagine an egg timer but with a spheroid shape of smaller diameter instead of a narrow neck with a tenon and slot at each end They are the upright supports of the Rocking Horse frame).

Is there a way to work out what size motors/ gearing I will need to get good accuracy/repeatability/resolution?

Tim