1 (edited by brianthorsal 2014-12-07 21:10:57)

Topic: Weird Print Problem.

On some sides of the prints its not smooth, well thats not the right word, so look at these pictures to see the issue. Big air holes inbetween.

Anyone know what is causing this?


Solidoodle 4 1 month old.

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2

Re: Weird Print Problem.

It looks like layer separation(cracking).

SD3, E3D hotend,linear bearing on x/y axis',pillow block bearing on y conneting rod, ball bearngs on front y axis, fan on y stepper motor.

3

Re: Weird Print Problem.

+1
You are having delamination. This is typically caused from lower heat than need:
*No enclosure
*Openings in the enclosure
*Lower heat settings than required

I have even seen bad filament do this (dirt/dust/moisture)
Any time this happens to me, which is rare, I change the layer height and it eliminates the problem.

Printit Mason and Printit Horizon printers
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
Filawinder and Filastruder #1870.....worth every penny!

4

Re: Weird Print Problem.

AZERATE wrote:

+1
You are having delamination. This is typically caused from lower heat than need:
*No enclosure
*Openings in the enclosure
*Lower heat settings than required

+1, also try a lower infill

SD2 - Glass Bed, Fans on PCB and Y motor, Custom enclosure
Slicer - Simplify3D

5

Re: Weird Print Problem.

Thank you for the information. Also, this mostly only happens on one side.

6

Re: Weird Print Problem.

Have you properly leveled your bed lately? May need to be more dialed in.
You could have good adhesion on the first layer, but as it builds higher and the infill cools and tugs, it is possible it is giving this result.

Printit Mason and Printit Horizon printers
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
Filawinder and Filastruder #1870.....worth every penny!

7

Re: Weird Print Problem.

Dont know what machine you have, but if it is an open frame, try some cardboard sides on it to see how it will do.

SD2 - Glass Bed, Fans on PCB and Y motor, Custom enclosure
Slicer - Simplify3D

8

Re: Weird Print Problem.

Its a Solidoodle 4. Also, yes the bed is calibrated/leveled.

9 (edited by n2ri 2014-12-08 00:03:46)

Re: Weird Print Problem.

AZERATE wrote:

+1
You are having delamination. This is typically caused from lower heat than need:
*No enclosure
*Openings in the enclosure
*Lower heat settings than required

I have even seen bad filament do this (dirt/dust/moisture)
Any time this happens to me, which is rare, I change the layer height and it eliminates the problem.


thanks for this post. got in a big debate over this with the devinci guys last week they all claim you need a parts fan to cool the layers as they extrude to prevent this. I said ABS has to have heated bed til finished printing so how does fast cooling upper layers keep this from happening. they have inclosures but still issues on long prints.

geez them guys where hard headed. thought I was going nuts lol. finally saw I was in the devinci forum so just left it.

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

10

Re: Weird Print Problem.

I attached another photo. Still can not resolve this. Any more ideas?

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11

Re: Weird Print Problem.

1) What brand filament are you using?
2) What are your heat settings?
3) Have you modified the print speeds?
4) Have you added a fan to cool the print?
5) Have you installed a slop nut or well nut to prevent Z backlash? I had this problem constantly when first printing until I installed something. And it always happened on one side as well now that I think of it.

@n2ri- A fan is pretty much required for PLA. You will rarely have good PLA results if you have an enclosure without a cooling fan. With ABS, since it cools too fast, will require a chamber to keep the heat in. A fan for ABS is a wonderful tool is you are:
1) Printing something very small
2) Bridging gaps
3) Have harsh overhangs

You are correct that ABS needs to be heated until the end of the job. In extreme occasions while printing with ABS slurry, I needed to turn off the bed heat because the temp under the slurry began to bubble, causing warping not on the first layers, but on the current tool paths.

Printit Mason and Printit Horizon printers
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
Filawinder and Filastruder #1870.....worth every penny!

12

Re: Weird Print Problem.

yep, them xyz devenci guys sware they have to cool ABS as it prints. the opposite of what we have all found. I verifide they didnt mean PLA. let em bang their hard heads on the wall I say lol

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

13

Re: Weird Print Problem.

brianthorsal wrote:

I attached another photo. Still can not resolve this. Any more ideas?

How big is this print?

SD2 with E3D, SD Press, Form 1+
Filastruder
NYLON (taulman): http://www.soliforum.com/topic/466/nylon/

14

Re: Weird Print Problem.

if it dont have to be hollow. use honeycomb infill and it will help hold it together better while being stronger.. that what I do with cylinder shaped items not used as a container or needing to be hollow for use. more time and material is better than all the wasted attempts

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

15 (edited by wire10ga 2014-12-09 12:53:45)

Re: Weird Print Problem.

Since you have an SD4, try you letting your bed get to temp then letting it heat soak for 10-15 min with the door closed for before starting larger prints.

SD2 - Glass Bed, Fans on PCB and Y motor, Custom enclosure
Slicer - Simplify3D