3x6

[natchez]

wich rod should i use for my cnc they have several hardening methods to chose from

[Ken_Shea]

Natches,
If you are talking about drill rod, either the oil/water hardening, it won't matter, since if you want them straight as possible you won't harden them anyway. This stuff looks really nice but does not make for particularly durable linear rails, although it would sure get you going cheap enough and you could upgrade at a later time.


Ken

[Chagrin]

metalexpress.net sells chromed 1045 steel that you might want to look into. It's only a little more expensive than drill rod.