Hi Hugo,
What kind of positional accuracy and stiffness are you aiming for with this machine? Also what is your working envelope?
If you are new to building precision machines having a look at a copy of "precision machine design" by Alexander Slocum would be a good idea, it covers quite a bit of the level of engineering involved.
I have been collecting parts for a potential linear motor mill for some time now, but am doing so for my hobby, so for me part selection is more down to what i can scrounge then what is best. Personally im doing this project for the fun of it, rather then to meet a work deadline, and if the case were different i would probably buy a machine even if it cost lots more. |