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Topic: How do some printers achieve 20micron Z resolution?

Is it through micro stepping? If so, does micro stepping have good precision? And how does the extruder handle such high resolutions?

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Re: How do some printers achieve 20micron Z resolution?

I have yet to see an FFF type printer claim to do this. Do you have link to one? I would like to check one out. I doubt microstepping would help much in the Z. It is usually used on the X and Y to make things more round and smoother at the cost of torque.

Printing since 2009 and still love it!
Anycubic 4MAX best $225 ever invested.
Voxelabs Proxima SLA. 6 inch 2k Mono LCD.
Anycubic Predator, massive Delta machine. 450 x 370 print envelope.

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Re: How do some printers achieve 20micron Z resolution?

the top 2 claim 20 micron from wanhao, im not sure how good wanhao is though.

http://wanhaousa.com/pages/3d-printers

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Re: How do some printers achieve 20micron Z resolution?

TheNeck wrote:

the top 2 claim 20 micron from wanhao, im not sure how good wanhao is though.

http://wanhaousa.com/pages/3d-printers

Wanhao is a copycat of CT'c there parts are identical as I buy parts from a Wanhao distributor for my CT'c. I can do .1 on my CT'c but not sure I could go smaller.

Printing since 2009 and still love it!
Anycubic 4MAX best $225 ever invested.
Voxelabs Proxima SLA. 6 inch 2k Mono LCD.
Anycubic Predator, massive Delta machine. 450 x 370 print envelope.

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Re: How do some printers achieve 20micron Z resolution?

Most Z lead screws would be able to handle 20 micron theoretically; one of the more standard screws is 8mm x 1.25 pitch.  With 1/16 micro stepping the resultant steps / mm would be 2560.  1mm / 2560 = .00039mm per step...so about 50 steps would give you 20 micron.

BUT, this assumes that the structural integrity of the entire Z platform can handle this accuracy...

Beside that 1/32 on the extruder motor coupled with a 0.9 Stepper Motor and a HobGoblin might give the extrusion control necessary.

Bear in mind this is 5 TIMES a smaller layer height than .1...even smaller prints could take hours!  I think I'll stick with .1 when necessary...

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6 (edited by carl_m1968 2016-03-10 00:51:56)

Re: How do some printers achieve 20micron Z resolution?

I am trying .02 now on my CT'c which is the same as a Wanhao. I'll let you know how it comes out as a 20mm cal cube is going to take many hours. According to Simplify3d the projected time for a .02 layer 20mm cal cube is 10 hours and 20 minutes. Thats with a 20% infill.

Printing since 2009 and still love it!
Anycubic 4MAX best $225 ever invested.
Voxelabs Proxima SLA. 6 inch 2k Mono LCD.
Anycubic Predator, massive Delta machine. 450 x 370 print envelope.

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Re: How do some printers achieve 20micron Z resolution?

I printed a companion cube on our R-530 printer at .05mm and .14mm layer heights. The difference between the two is really noticeable but it did take much longer. I can't imagine ever needing to reduce the layer height below .1 other then to see if its possible.

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Re: How do some printers achieve 20micron Z resolution?

flow calibration is key

Solidoodle 2 with Deluxe kit cover & glass bed with heater. and 2nd board SD2 used not 3rd and alum platform not installed yet still wood. also need cooling fan installed to board. use Repetier Host couple vers. Slic3r also have all free ware STL programs