Linear sliders

[routercnc]

Hi Gorbo,

Welcome to the forum. I had a look at that link and the 'linear guideways' and 'minature linear guideways' are both tried and trusted parts for CNC use. Depends on what you had in mind, but good solutions.

'Easy to install rails systems' would take a bit more care to use. They are like reverse profile rails with the rail on the outside and the rotating part on the inside. Since they use wheels rather than ball bearings, their moment about one axis (local X) was low. Depends on where you wanted to use them on the CNC machine for their suitability. The main advantages were misalignment tolerance and low noise. Given that the machine you make is a one-off, and made by your fair hand(!), you'd hope to make it fairly true. As for noise, when the router or spindle is cutting the bearing noise will probably be inaudible, or certainly acceptable.

Personally I would therefore choose the 'linear guideway' type. Be warned though that all these sorts of bearing things are really for industrial use so tend to be expensive.

Did you have anything in mind from this link? Did you have a CNC design in mind?