Fine tuning the construction/assembly of a Delta 3d printer (Rostock MAX early rev 2)

[Russ]

An update:

I measured the effector arms, and WOW they're accurately made! I need to look elsewhere. When I measured by hand using a tape and a steel rule, I thought I might have been seeing nearly 0.5mm error, and I measured a few times to confirm, I guess that says a lot about the accuracy you can expect when measuring things by hand/eye like that.

I would guess I have 3 pairs of arms from 3 different batches, or perhaps they're injection moulded in pairs and each pair is ever so slightly different due to temp variations etc.

My machines resolution is 5 micron (not as I previously stated) in US imperial, that's 0.0002" resolution - accuracy is 10 per million. I trust these figures and measured at least twice

269.065
269.055
269.020
269.020
269.000
269.000

Photo 20-10-2015, 15 43 48.jpg