no problem thanks for the help

i know this is not easy to build but i think ist the only way i can have a cnc in the garage.

if i was to change the machine 90 °( making the machine 3 meters long and the gantry 1600 mm long) could it work then?

what do you mean with :
you add triangulation - a support from end to end raised in the middle and joined with a strut, this will not stop twist?

and how hard will it drop and twist?
if the cnc is accurate to about 1 mm on the 3 meter then its ok i can live with that
i am using it for shelfholes( 5 mm holes like ikea cabinets) and making some MDF doors , some holes for blum hinges etc.