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Taper attachment build

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rowbare:
Nice job! How did you do the pivot? Is it a tapered pivot like the Hardinge?

bob

WeldingRod:
No, it's a shoulder bolt in a matching reamed hole.

On the subject of 3D printing heights, I've been happy with the results when I measured it.  Quantization errors shouldn't be cumulative (unless somebody blew it on the coding/math). Microstepping doesn't change the fundamental mm/turn, just electrically divides it.  Surface finish on the top layer adds uncertainty.
I could run out some test pieces...  knowing I run my printer on freakishly thick layers. ;-)

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ddmckee54:
WeldingRod:

I don't see how the slicing software can get a part height that will be consistently accurate.  It's going to get really close, but I don't see how the part height couldn't help but vary by up to +/- one half the layer thickness.  I guess it would depend on the slicing software you're using.  I have a Prusa I3 clone so I'm using Slic3r that's been optimized for the Prusa machines, I don't print enough to be able to justify shelling out a couple of hundred bucks for slicing software. 

Don

WeldingRod:
Ah, right!  Unless your slicer is able to do partial height layers, you are going to get an integral number of them.  I haven't heard of partial height layers as an option anyway.  When your later height is small fraction as of a mm, it's not an issue relative to the xy accuracy.  When you do like me and use 0.6mm layers, you've got to be a bit more tolerant.
I'll see about some z axis tests tonight.

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