sliding gantry or sliding Base ?

[Ricardoco]

Thanks for your answer Jonathan,
i'd rather spend a little more money for a sturdy machine, than being dissapointed afterwards, so that wont be a problem for me to justify a little more money.

I am not sure about the steel box section, i could only bolt them together, because I dont think I can weld good enough so that it wont distort and warp in every direction :)

Whats your opinion on that ?


Regards
Clemens

If i could i would like to comment on the welding question.

If you look in my gallery you will see i am using box section in my latest build, Like you i was worried about warp, a friend of mine who has been welding for years (surgical instruments) helped me, i made up a Jig with angle iron and used a single tack on all joint faces and from there i built up the joints gradually on each side untill i was finished, there was no measurable warpage. as long as the two pieces to be welded are held clamped in the Jig and you are in no hurry i dont see it as a problem.. and it taught me how to get some great mig welds as well...

Rick