Assembly questions and answers for the Shapeoko 3 CNC Mill
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Chembro
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by Chembro » Fri Sep 11, 2015 8:06 pm
Today is a tragic day for machine #48
A V wheel decided to come apart rendering my z axis useless.
Are these the same as the makerslide wheel so I can order a bunch of them? I didn't realize these things were plastic.

Last edited by
Chembro on Thu Feb 11, 2016 1:55 am, edited 1 time in total.
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WillAdams
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by WillAdams » Fri Sep 11, 2015 8:15 pm
Chembro wrote:Today is a tragic day for machine #47
A V wheel decided to come apart rendering my z axis useless.
Are these the same as the makerslide wheel so I can order a bunch of them? I didn't realize these things were plastic.
Yes. Delrin as noted on the wiki:
http://www.shapeoko.com/wiki/index.php/Parts#All_Axes --- there’s a list of sources / vendors --- anyone know of any others?
Shapeoko 3XL #0006 w/ Carbide Compact Router w/0.125″ and ¼″ Carbide 3D precision collets
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CastIrony
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by CastIrony » Fri Sep 11, 2015 9:24 pm
Any idea what caused that?
Shapeoko 3 #192 - Complete! Needs limit switches.
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Brian Stone
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by Brian Stone » Fri Sep 11, 2015 9:31 pm
That's what I'm wondering, too. Unless it fell off and got caught by the end mill. I don't see how it could get chipped like that, otherwise. Interesting case.
Shapeoko 2 #7353
1500x1000mm Shapeoko/X-Carve Hybrid, Nema-23's, Belt-Driven Z-Axis /w ACME Screw, Dewalt 611, Soundproof Enclosure
[Fusion 360 | Illustrator] -> Universal G-Code Sender
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WillAdams
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by WillAdams » Fri Sep 11, 2015 9:34 pm
Molding flaw when the rod was formed?
Send the picture to
support@carbide3d.com
Shapeoko 3XL #0006 w/ Carbide Compact Router w/0.125″ and ¼″ Carbide 3D precision collets
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Chembro
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by Chembro » Sat Sep 12, 2015 1:53 am
Well it's somewhat of a freak accident.
So I was milling holes into a sheet of phenolic when the machine didn't lift up far enough on one of the hole exists, it dug through 3/8in thick CE phenolic at warp speeds. It was a quick movement to the next hole which broke the material free from the supports and caused the z axis to experience some major forces.Since the material was now bouncing around on the mill and the z axis, for some god awful reason, made a crucial plunge into one of my threaded t-nuts in the bottom of the wasteboard doing tons of damage.
Luckily I was able to patch up the wasteboard with some wood filler till someone starts selling an upgraded wasteboard but the v-wheels took a lot of hell.
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TomO
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by TomO » Tue Oct 13, 2015 8:03 pm
I broke a v wheel on my z axis today - looks almost identical to the OP's photo. Anyone have concerns using these wheels with the expansion kit, with the added weight/stress?
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AnonymousPerson
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by AnonymousPerson » Tue Oct 13, 2015 8:11 pm
Might be time for some anodized titanium bearings (with thin Delrin coating) instead.

Shapeoko 3 #516
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whimmel
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by whimmel » Thu Oct 15, 2015 2:50 pm
Openbuilds still offers the steel v-wheels too. You'll probably want to hard-anodize your rails though.
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WillAdams
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by WillAdams » Thu Oct 15, 2015 3:01 pm
Hard anodization won't stand up to steel wheels. It's a nice idea, and in theory should work, but in practice, doesn't --- at least I've not found anyone reporting long-term success.
The best option seems to be increasing the number of V-wheels --- a couple of people have reported improvements doing thus.
Shapeoko 3XL #0006 w/ Carbide Compact Router w/0.125″ and ¼″ Carbide 3D precision collets