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Linear rods vs linear rails  

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H20Slicer
(@h20slicer)
Active Member
Linear rods vs linear rails

For those of you who have upgraded your y-axis and possibly x-axis to linear rails, have you noticed any real benefits or drawbacks to doing so?

Posted : 21/01/2020 4:33 am
vintagepc
(@vintagepc)
Member
RE: Linear rods vs linear rails

Better bearings are reported to make an appreciable difference, but I've seen numerous folks (Toms3D, a couple r/prusa3d posts) make the step to linear rails (from bearings that already performed well, be they stock or 3rd party) and report marginal or no appreciable improvement. 

Personally I run vesconite bushings for the reduced noise over roller bearings; the surface finish in conjunction with 0.9 degree steppers is fantastic. 

From a purely financial perspective, there are probably better upgrades you can spend your money on before linear rails for more bang-for-buck improvements.

Posted : 21/01/2020 2:10 pm
Nikolai liked
x50arm
(@x50arm)
Estimable Member
RE: Linear rods vs linear rails

My linear bearings were running a little rough so I swapped them out for linear rails.  The linear rails are much smoother than my old bearings (new bearings would have been also), but I didn’t see any real change in print quality.

Posted : 22/01/2020 1:15 am
karl-herbert
(@karl-herbert)
Illustrious Member
RE: Linear rods vs linear rails

@allen-m2

Yes, much smoother, and i'm using these one: https://www.igus.at/product/1195 expensive, but much more quiet than the Prusa bearings.

Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen.

Posted : 24/01/2020 9:11 pm
Lichtjaeger
(@lichtjaeger)
Noble Member
RE: Linear rods vs linear rails

Posted : 24/01/2020 10:05 pm
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