[QUOTE=JAZZCNC;27824]Ah ok slightly better than feared thou at this width extra bracing would be my prefered choice.

Hi the gantry back support on this model is 30x180mm heavy gauge we have several gantry options available for the customer to choose from
30x180mm
30x200mm
30x300mm
40x200mm
40x300mm
60x320mm

we also have a range of gantry uprights available
40x120mm
40x160mm
40x320mm
60x320mm
80x320mm

Our machines do weigh a great deal even our standard models are very heavy which is why they are so rigid no additional bracing is needed on this model they really are solid, but i do understand your concern as you just cannot see from the pictures but once you see them in the flesh "so to speak" its only then you get some idea of how rigid they are customers are always surprised by the weight of the machines.
As the customer you can virtually design your own custom CNC we us by choosing from our range of components to get a truly customised CNC router to your own spec. We have supplied a customised M series of the PRO 660x660 CNC to 2 engineering firms to replace there small CNC mills once they seen what our metal range of CNC routers can produce & for a fraction of the price of a CNC mill there sold ,our 3 phase 5HP & 7HP water cooled spindles chew through aluminium like butter & you can high speed machine with them too cutting production runs down significantly ,one client has been running his older one for the past 26 months machining aluminium all day 6 days a week & its still going strong the customer has since purchased another unit this time with full enclosure i do have permission from the company to use pictures of the components they machine with the CNC if anyone's interested seeing them we are currently archiving a selection of customers work to be placed on our new website the only draw back with the M series of machines is they are incredibly heavy even the small models are obscenely heavy to give you a idea 4 people cannot even pick up the small STK M series & this only has a 660x660 cutting bed & stands 1700mm tall
best wishes
all the best
best wishes