Metric or Fractional T-Slot material?

[jeffmorris]

Plans for Joe's Hybrid 4X4 CNC router called for metric T-Slot material. Why metric instead of fractional?

[joecnc2006]

does not matter, the metric was cheaper, and the machine has tolerances built in that will let either work, the distance differences are not that much.

[jeffmorris]

I looked through the online catalog from the company called "80/20 Inc". I couldn't believe it that they have almost everything but the kitchen sink for building anything.