Search found 528 matches

by zemlin
Sun May 03, 2020 1:42 am
Forum: Printing Settings
Topic: Resumed paused print after loading a new roll - resulted in air print - Ideas?
Replies: 6
Views: 1547

Re: Resumed paused print after loading a new roll - resulted in air print - Ideas?

But what i did: I stop the motors with the button on the display and moved the head in xy direction to have more space. That's your mistake. The vast majority of 3D printers are using open-loop position control. The assumption is made that the steppers are not missing steps and so all the moves are...
by zemlin
Tue Apr 28, 2020 2:30 am
Forum: Pro2 Series
Topic: Pro2: Print finish screen, wrong filament usage
Replies: 5
Views: 962

Re: Pro2: Print finish screen, wrong filament usage

Where does the filament density come from for this calculation. It would have to be in the gcode. Make sure you have the density set properly in your slicer.
by zemlin
Mon Apr 27, 2020 7:53 pm
Forum: Hardware
Topic: Octoprint and hacking the touch screen?
Replies: 8
Views: 2012

Re: Octoprint and hacking the touch screen?

I finally got around to digging into this. My end-goal has changed - going to install a DUET 2 WIFI board, but the requirement on the touch screen is pretty much the same. I downloaded the IMG file you linked to and dumped it on an SD card. Flipped switches accordingly, and a desktop appears. The di...
by zemlin
Thu Apr 23, 2020 7:35 pm
Forum: Hardware
Topic: Funky Flute Song from N2 Plus Motor/XY Rods
Replies: 6
Views: 774

Re: Funky Flute Song from N2 Plus Motor/XY Rods

Stepper motors move in steps. The X and Y motors are moving at different speeds depending on the angle of the segment being printed. STL files have no curves, so curved edges are printed as segments of straight lines. The motors moving at different frequencies will play different 'chords' depending ...
by zemlin
Sat Apr 18, 2020 11:50 pm
Forum: N Series
Topic: CAD model of N2 head assembly
Replies: 4
Views: 2262

Re: CAD model of N2 head assembly

Great job and thanks for sharing :-) Have you ever thought about water cooling? I know the Pro can be short on cooling, but I haven't had any problems with my N2/N2+. I've redesigned my cooling arrangement to (I believe) improve cooling with fans, and added programmable part cooling - a dubious on ...
by zemlin
Fri Apr 17, 2020 5:55 pm
Forum: Hardware
Topic: Autocalibrator
Replies: 2
Views: 3437

Re: Autocalibrator

There are already probes that can map out the surface of the bed. IMHO, a better solution that attempting to "calibrate" in real time while printing. A sensor that can measure your extrusion in real time, that would see all different materials and colors on all different build surfaces at ...
by zemlin
Fri Apr 17, 2020 1:56 am
Forum: Hardware
Topic: N2 Y Axis not working
Replies: 15
Views: 2578

Re: N2 Y Axis not working

How 'bout if you swap X and Y motor cables on the controller board. It could be a wiring issue. I gave that a try and still got no response from the Y-axis. Can you clarify? You swapped the X and Y motor cables on the controller board. You say no response from the Y axis - do you mean the MOTOR on ...
by zemlin
Tue Apr 14, 2020 12:54 am
Forum: N Series
Topic: Another Quad Fan Plan - now Penta Fan
Replies: 7
Views: 2015

Re: Another Quad Fan Plan - now Penta Fan

Markus64 wrote:Respect, great job!

Thank you.
by zemlin
Mon Apr 13, 2020 5:24 pm
Forum: N Series
Topic: Another Quad Fan Plan - now Penta Fan
Replies: 7
Views: 2015

Re: Another Quad Fan Plan - now Penta Fan

Interesting arrangement. If fan #5 is cooling the cold end heatsinks, do you still need the two inboard fans? What is the noise level like? I changed my 30mm cold end fans for 40mm Noctua fans to reduce the noise, but I'm guessing your 5up squirrel cage design is loud. Valid questions - I can't say...
by zemlin
Fri Apr 10, 2020 1:20 am
Forum: N Series
Topic: Another Quad Fan Plan - now Penta Fan
Replies: 7
Views: 2015

Re: Another Quad Fan Plan - now Penta Fan

My MO is not generally to take an inadequate design and throw more stuff at it to solve the problem, but that's what I'm trying here. There is enough about this concept that I like, plus i have the fans. I think the issue with the hot end cooling is just that I'm drawing in the hot air rising up fro...
by zemlin
Tue Mar 31, 2020 2:39 am
Forum: General
Topic: How thick can a layer be?
Replies: 9
Views: 1488

Re: How thick can a layer be?

Just did a few slices on that one - that one looks like a candidate for a .8mm nozzle - run time might drop below an hour.
by zemlin
Tue Mar 31, 2020 2:05 am
Forum: General
Topic: How thick can a layer be?
Replies: 9
Views: 1488

Re: How thick can a layer be?

I ran one piece with the settings above. I set the extrusion width to .63mm as that eliminated the gap between shells and didn't require any fill. Printed one part in about 1 hour 20 minutes. It isn't the prettiest part I've ever made, but it looks perfectly functional, and the integrity seems great...
by zemlin
Mon Mar 30, 2020 11:53 am
Forum: General
Topic: How thick can a layer be?
Replies: 9
Views: 1488

Re: How thick can a layer be?

I'll be able to run a test print this evening.
I'm able to fit three of these on the N2 print bed, and it looks like I can run the build in under 4 hours without pushing the speed (60 mm/s), .6mm nozzle, .3mm layer.
Capture.JPG
by zemlin
Mon Mar 30, 2020 1:11 am
Forum: General
Topic: How thick can a layer be?
Replies: 9
Views: 1488

Re: How thick can a layer be?

What material are you running? I could run a couple test parts to see how they build. I think it looks fine with a .6mm nozzle. Based on what I can see here, PETG would be my material of choice.

Capture.JPG
by zemlin
Sun Mar 29, 2020 10:59 pm
Forum: General
Topic: How thick can a layer be?
Replies: 9
Views: 1488

Re: How thick can a layer be?

I generally go no more than 50% of the nozzle diameter, especially where there is overhang. I can't say I've run test prints with a very thick layer, but if layer bonding is important to you, it doesn't seem like a good idea. I could be wrong. Larger nozzles make a huge difference in print speed. I ...
by zemlin
Sun Mar 29, 2020 6:49 pm
Forum: Hardware
Topic: Replacing print head linear bearings ?!?
Replies: 6
Views: 1392

Re: Replacing print head linear bearings ?!?

This is an N series. Is the carrier different on the Pro?
by zemlin
Sun Mar 29, 2020 3:13 pm
Forum: N Series
Topic: Another Quad Fan Plan - now Penta Fan
Replies: 7
Views: 2015

Re: Another Quad Fan Plan

Machine is running with the new fan arrangement. The hot-end cooling appears to be a bit inferior to the factory setup. I may try to find a spot to place one more fan to feed cool air to the heat sinks - might just be pulling in hot air from the heat blocks. The air flow seems good. The print coolin...
by zemlin
Sat Mar 28, 2020 12:24 am
Forum: Pro2 Series
Topic: Print Plate deforms strongly
Replies: 13
Views: 2257

Re: Print Plate deforms strongly

I thought you were saying the bed before printing was off by 2-3mm. What you're saying is that you're getting 2-3mm of warp in an ABS print. That is believable. ABS can be tricky material, and not all ABS filaments are created equal. I've had some that I've never been able to print with and others t...
by zemlin
Sat Mar 28, 2020 12:15 am
Forum: Hardware
Topic: Replacing print head linear bearings ?!?
Replies: 6
Views: 1392

Replacing print head linear bearings ?!?

Who's the poor, unfortunate, sadistic soul who designed the bearing retention for these things? The X-Axis bearing isn't a big deal, but the Y-Axis has two circlips - one practically inaccessible due to the filament tubes, the other is locked in place in a narrow groove because there's no clearance ...
by zemlin
Fri Mar 27, 2020 6:33 pm
Forum: Pro2 Series
Topic: Print Plate deforms strongly
Replies: 13
Views: 2257

Re: Print Plate deforms strongly

Are you sure you're not missing a decimal on your measurements? A 2-3mm deviation from flat would be huge. .2mm is still a lot, but more understandable. If you are seeing a rise in the center, I'm guessing it's actually slight sag of the cross rods supporting the print head. The simply supported rod...

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