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jacobs

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Posts posted by jacobs

  1. http://www.ebay.com.au/itm/2pcs-OD-8mm-x-400mm-Cylinder-Liner-Rail-Linear-Shaft-Optical-Axis-/290765610622?pt=LH_DefaultDomain_15&hash=item43b2fb1e7e&_uhb=1

    that is the chinese supplier I found. The australian supplier wrote the following regarding precision tolerance:

    Asia tolerance standard g6(um): -5-14

    Europe tolerance standard h6(um): 0-9

    which made me think they might mean the same thing.

     

  2. Thanks for that, I just thought I could get away with something a bit cheaper. I didn't see any with high enough precision and specs on ebay, so if nothing else I'll get the ones snowygrouch suggested, but 140dollars ouch....

    Otherwise the ones I was looking at, were these ones:

    http://www.smallparts.com.au/store/item/sh08000x037500c1060/shaftinggroundprecisionchromesteel/

    They are a bit cheaper, but still the same specs, I think.

    -Diameter 8.000mm

    -Length 375.0mm

    -Straightness 0.0003 mm/mm

    -Surface finish 0.25-0.4 um

    -Hardness 60-63HRC

    -Diameter tolerance -0.000/-0.009 (which i think is h6)

    I was thinking if I get these I might not need to cut them down, as I lack proper equipment for this... or is that a bit of a gamble?

     

  3. Hey everyone,

    I've been wanting to do this mod for quite a while, but am having a bit of trouble finding a supplier for the shafts. I was looking at the ones snowygrouch suggested from conrad.de, but they charge 40euros to ship to australia, which is a bit steep considering the shafts are only 10.

    The only local ones i have found that meet the specs are a bit overkill, costing around 50dollars each. Or maybe I just don't know where to look.

    Someone suggested one of the rod sets from ultimachine, maybe this one:

    https://ultimachine.com/content/prusa-mendel-smooth-rod-set

    I could get this while ordering some other things, but are they suitable?

    So, If anyone could point me in the right direction, that would be fantastic...

    Cheers,

    Jacob

     

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