Quote Originally Posted by Jonathan View Post
Have you considered using steel box section instead of aluminium extrusion? It's much cheaper. Can cause problems with resonance, but there's ways round that.

Try:

http://www.kjnltd.co.uk/
tanks a lot Jonathan,for your reply . i went to the web page, that you mentioned,and there prices do seem fair. have you used this material yourself ? and can you explain what you mean , that you can have problems with resonance ? and how do you get around this problem ? as i say , i am a complete novice to all things CNC . i am trying to learn as much as possible ,before i start building this machine. it seems like a daunting task, to a novice. have you built your own CNC MACHINE, if i need any more help and advice , can i keep in touch with you.

yours kindly paul