Voron Life , for anyone going into 3D printing !

I've had one for 6 months now and have resisted the upgrade/mod disease up until this week.  A pi zero 2 and Klipper are on the healing bench at this moment.

Every time I see youtube printer vids I start thinking "these 3D printer people don't know #($%&@) about REAL motion control" and I start shopping for granite surface plates, linear motors and 1um scales on FleaBay...

I've even got some Parker 404XR's with scales and non-cogging servos I could repurpose to be the most accurate Ender 3 on the planet...

Must. Not. Go. There..

In the real world micron accuracy and repeatability and are not going to happen unless you have controlled conditions. Hoping to achieve it with an aluminium structure and a high heat source is folly IMHO. I call recall a thread, time & place are mystery, but they were trying to achieve an accuracy that below the thermal expansion of cast iron, the machine was in a environment with no temperature control.

Oh I have seen some youtube videos trying to get that kind of accuracy with just common chinese trapezoidal screws.

If you were to achieve that we are dealing with a medium that goes from a molten to solid state. I guess it may be possible to control that, but at what cost.

If I get a print that is close and doesn't require rework to fit I'm happy. If I need accuracy I use a another medium.

But in saying all that by some freak of nature or some yet unbeknown quantum feature I'm getting sub quark repeatability & accuracy on all tools in my shed, even the 10lb lump hammer. Except the 3D printer, I'm only getting molecule ratings.

1.  I have a machinist friend who spent thousands of dollars chasing .005" accuracy with an FDM printer.  Never gonna happen.  At best, you have the equivalent of a really good sandcast, ready for post processing.
2  I've long since stopped grading my 3D printers on speed.  For one thing, PETG & polycarbonate** are my main materials, and they simply don't print well at high speed.  For another, I seem to get just as impatient with a 2 hour print as a 24-hour print. Maybe more, because on the really long prints I can ignore the printer.

** maybe nylon, now that I've moved out of the swamp that is Central Texas...

I hope nobody got the impression that I thought a printer was anything but a swank hot melt glue gun, regardless of how much money/time is spent on the motion components.  My earlier post was intended to be tongue-in-cheek.

I, too, have stopped chasing higher speeds.  But I'm pretty happy with the larger nozzles, heaters, and so forth I added to put out more plastic per time unit.  Print times are shorter and I really don't care about surface finish - and parts seem stronger.