1 Topic by caswal

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Topic: SD2 - Print Issues

It's been a while since I have done any 3D printing, so decided to get back into it. My SD2 has had a lot of modifications along the way.

Custom Z Lead Screw (0.1mm pitch)
New PSU
Custom Heatbed
Glass Bed
Lawsy's carriages
Various Bearing mods
E3D Extruder V5 (0.4mm nozzle)
DRV8825 Stepper driver for the Extruder

Now I was having issues with prints, and searched around the forums and found some people had issues after converting over to the E3D head, that the standard A4988 controller for the Extruder wasn't really up the task. So have just recently got and installed the DRV8825 for the Extruder. Recalibrated the Extruder steps per mm.

But I'm still getting issues with my prints:

Here are a couple of pictures:

A 40x10 single wall test print:

http://i.imgur.com/4rjbRDZ.jpg

a 20x20x10mm cuboid:

http://i.imgur.com/N8BGzET.jpg

As you can see, it's pretty good. But after a few layers get a weird overextruded layer.

I am using Repetier Host V1.5.3

These are my settings:

http://i.imgur.com/7V5vQ4s.png
http://i.imgur.com/gEQS1ZJ.png
http://i.imgur.com/qEzdMFk.png
http://i.imgur.com/PnwuZoF.png

Any help would be greatly appreciated.

Lead Programmer & Co-Owner of Camshaft Software - Creators of Automation - The Car Company Tycoon Game

caswal's Website

2 Reply by heartless

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Re: SD2 - Print Issues

judging by the moire in those prints, you definitely need to adjust the trimpot on that stepper driver.

and maybe try changing the temp just a little? I have found that the light colors like it just a little cooler than darker colors...

also, what size nozzle are you running on that E3d? if it is the stock nozzle (0.4), default extrusion width should be 0.48, not 0.42

SD4 #1 & #2 - Lawsy carriages, E3D v6, Rumba controller board, mirror bed plate, X motor fan, upgraded PSU & Mica bed heater
SD4 #3 - in the works ~ Folgertech FT-5, rev 1
Printit Industries Beta Tester - Horizon H1

3 Reply by caswal

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Re: SD2 - Print Issues

Thanks heartless, I have adjusted the trimpot and the prints are better now. Does also still seem to be a touch too hot, got a few strings.

I'm running 0.4mm nozzle. Should I just set it to 0.48 across the board, including the couple set to 0 (such as the 2 infills).

Lead Programmer & Co-Owner of Camshaft Software - Creators of Automation - The Car Company Tycoon Game

caswal's Website

4 Reply by wardjr

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Re: SD2 - Print Issues

If they are at zero you can leave them at zero.

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5 Reply by caswal (edited by caswal 2015-07-29 11:31:02)

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Re: SD2 - Print Issues

So adjusted up to 0.48, and a little more trimpot adjustment.

0.3mm Single Wall
http://i.imgur.com/QjcWOxQ.jpg
20mm cube
http://i.imgur.com/BvaUllB.jpg

I thought I might try and give 0.2mm a go. As I want to get up to to that resolution.
0.2mm Single Wall
http://i.imgur.com/KxkhzOV.jpg

20mm cube
http://i.imgur.com/K2QEeDC.jpg



Might still be running the filament a bit too hot? Still running at 235.

Also would a Hobb-Goblin help? Is this still an filament/extrude resolution issue?

Thanks for the help so far.

Lead Programmer & Co-Owner of Camshaft Software - Creators of Automation - The Car Company Tycoon Game

caswal's Website

6 Reply by heartless (edited by heartless 2015-07-29 12:00:05)

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Re: SD2 - Print Issues

definitely looking better, might still be a little bit too hot, but it also looks like you may have a moisture issue happening as well...

in your first 20mm cube pic, it looks like little popped bubbles in several places - that indicates moisture in the filament.

not really sure what to say about the 0.2 layer height cube... the single wall piece looks good, but the cube - not so much.
a bit of backlash perhaps? are the belts tensioned evenly? no slop? i dunno...

SD4 #1 & #2 - Lawsy carriages, E3D v6, Rumba controller board, mirror bed plate, X motor fan, upgraded PSU & Mica bed heater
SD4 #3 - in the works ~ Folgertech FT-5, rev 1
Printit Industries Beta Tester - Horizon H1

7 Reply by caswal

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Re: SD2 - Print Issues

The belts are well tensioned, with no slop. I'll check over them again.

Moisture will be a constant battle, is winter here, so a bit damp and humid.

Lead Programmer & Co-Owner of Camshaft Software - Creators of Automation - The Car Company Tycoon Game

caswal's Website

8 Reply by AZERATE

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Re: SD2 - Print Issues

caswal wrote:

Also would a Hobb-Goblin help? Is this still an filament/extrude resolution issue?

I would recommend the Hobb Goblin even if everything looked good wink
It would help resolution for sure, but I can wager your temp settings are still a bit high. I've been printing black ABS at 232c recently. So 235 for white seems like it may be a little much. However, it does not look like temp is entirely to blame. How old is the filament? Have you tried baking any potential moisture out?

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Multiple SD2s- Bulldog XL, E3D v5/v6/Lite6, Volcano, Hobb Goblin, Titan, .9 motor, Lawsy carriages, direct Y drive, fishing line...the list goes on
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9 Reply by caswal

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Re: SD2 - Print Issues

The filament is only a couple of weeks old. Was vacuum sealed with desiccant before I opened it.

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10 Reply by Morganism

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Re: SD2 - Print Issues

I am going with the temperature too high as well. That is still looking like over-extrusion. With everything calibrated correctly, too high a temperature can cause that. I know the recommended temperature for ABS is 220-240 degrees C. However, Solidoodles are notorious for displaying temperature wrong. Such that, most of the time when I am running ABS my temperature is set around 200-205, and PLA can go as low as 175, but usually 185-190 to work best.

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11 Reply by EagleSeven

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Re: SD2 - Print Issues

Could the Nozzle size be Larger than it's supposed to be ?
Do you have a way to measure or compare the hole size ?

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Modifications Added

12 Reply by caswal

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Re: SD2 - Print Issues

Morganism wrote:

I am going with the temperature too high as well. That is still looking like over-extrusion. With everything calibrated correctly, too high a temperature can cause that. I know the recommended temperature for ABS is 220-240 degrees C. However, Solidoodles are notorious for displaying temperature wrong. Such that, most of the time when I am running ABS my temperature is set around 200-205, and PLA can go as low as 175, but usually 185-190 to work best.

On the weekend I'll spend a bit more time on it. I was suffering really bad from delamination from being too cold (at sort of 210-220 temps).

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13 Reply by heartless

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Re: SD2 - Print Issues

temp really does depend on the printer/hotend setup. On my first SD4, stock hotend, I could run ABS at 185-190 with no problems and PLA was in the 160-165 range, second one is similar in temp range with the stock hotend, with only minor differences (+/- a degree or 2)

On the filament - you may want to try baking it at very low temp for a couple of hours to dry it out, and when you aren't actually printing, put it in some sort of sealed, airtight container with some desiccant to reduce moisture absorption. Large zipper type storage bags may work (double bag it) depending on spool size. If you have multiple spools, like I do, go find a container large enough to hold them all that is airtight. Ziplock makes some really nice ones that come in several sizes. Iris is another brand - same basic boxes.

SD4 #1 & #2 - Lawsy carriages, E3D v6, Rumba controller board, mirror bed plate, X motor fan, upgraded PSU & Mica bed heater
SD4 #3 - in the works ~ Folgertech FT-5, rev 1
Printit Industries Beta Tester - Horizon H1

14 Reply by caswal

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Re: SD2 - Print Issues

heartless wrote:

temp really does depend on the printer/hotend setup. On my first SD4, stock hotend, I could run ABS at 185-190 with no problems and PLA was in the 160-165 range, second one is similar in temp range with the stock hotend, with only minor differences (+/- a degree or 2)

On the filament - you may want to try baking it at very low temp for a couple of hours to dry it out, and when you aren't actually printing, put it in some sort of sealed, airtight container with some desiccant to reduce moisture absorption. Large zipper type storage bags may work (double bag it) depending on spool size. If you have multiple spools, like I do, go find a container large enough to hold them all that is airtight. Ziplock makes some really nice ones that come in several sizes. Iris is another brand - same basic boxes.

That stuff is all on my agenda to do. And I have a couple of other ideas relating to that.

With oven baking? How low sort of temperatures? 80 deg C?

Lead Programmer & Co-Owner of Camshaft Software - Creators of Automation - The Car Company Tycoon Game

caswal's Website

15 Reply by heartless

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Re: SD2 - Print Issues

as low as you can possibly set it. If you can get lower than 80C I would do it. And keep an eye on things - have heard of the spools deforming.

SD4 #1 & #2 - Lawsy carriages, E3D v6, Rumba controller board, mirror bed plate, X motor fan, upgraded PSU & Mica bed heater
SD4 #3 - in the works ~ Folgertech FT-5, rev 1
Printit Industries Beta Tester - Horizon H1

16 Reply by carl_m1968 (edited by carl_m1968 2015-08-01 01:14:44)

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Re: SD2 - Print Issues

heartless wrote:

as low as you can possibly set it. If you can get lower than 80C I would do it. And keep an eye on things - have heard of the spools deforming.


Raised hand here..

I had mine at 80. Put the filament in for 4 hours as a website advised. Filament came out fine, but the side of the spool that was on the rack turned all wavy... I can no longer use that spool on my edge riding on bearings spool holder.

I would suggest maybe putting the spool/s on a cookie sheet. May not warp then.

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