JuKu wrote:
I would be confident that in our application, microstepping will get you to the right quadrant and maybe in the right 1/8 region. I'm not sure about the latter and I wouldn't bet that 1:16 would be any more accurate, even if it would be available.
Yep, that's my assessment too.
The one exception would be a feedback loop involving the camera -- there are situations where I can imagine getting extreme resolution by using the camera for positioning rather than counting steps.
mrandt wrote:
I think that might also be an answer to the Z-limit-switch with Juki nozzle quest... I need to check how I could connect to that spring at the tip. Or just integrate a coil into the nozzle holder; it's inductance would also change when the inner nozzle tube moves upwards.
Honestly in my opinion the headache with the evil !@*#%^!(*%^ Juki z-switch mechanism has more to do with how tiny the components involved are. It's like a freaking Swiss wristwatch in there. Whatever facility manufactures the nozzle holder itself clearly has the ability to make precise stuff on that scale, so I really think that the electrical contact for the nozzle tip ought to be part of the nozzle holder in the first place, or at least a component that is produced together with the main holder and sold as a package.
Regardless, if you do ever get the z-switch situation solved I don't mind buying another nozzle holder. And I've got a few other random quibbles (from the past two-ish months of using one) if you're still serious about producing an improved version of it.