sliding gantry or sliding Base ?

[Ricardoco]

Hello Folks,

sorry if this question has been discussed before, if so, i couldnt find it :)

I am currently thinking out my Design and I am not sure how to make the X Axis.

Either the whole Gantry slides, or the Gantry is fixed and the "Baseplate" slides (lack of the right english word, sry) ?

Ok sliding Gantry will give you almost double the working X travel for a given length of rail so how much workable area do you need

I will probably use 600mm TBR20 supported round rails for x and y, so thats what the size will be.

Anybody has empiric experience comparing the two methods ??

With Moving Gantry you will get 600mm travel and 600mm working X axis minus the thickness of the gantry and the spindle offset, i can do pics if you need them, with the moving X worksurface you will get 300mm workable area/length if you want 600mm workable area then you will need 1200mm rails. and possibly a bigger area to put the machine in than you have..

Regards Rick