1 Topic by thecure

  • thecure
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Topic: Delamination confirmation

Here's a 24 hour print job that used a good 1/2kg of black ABS.
I retrieved to find many cracks in the sides of the print.
I understand that I should maybe have insulated the entire machine to keep the interior warm.
Any other techniques to prevent this ugly result?

What is the best substance to use to fill in the gaps, and instill strength to the comparatively weak print? Maybe a ABS/acetone mixture, heavy on the ABS to create a slow flowing goop?


I included the 2nd picture to show a real close call - I mad maybe 1-2 meters left on the spool after the print.

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2 Reply by boxcarmib

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Re: Delamination confirmation

it's rare to get a delamination problem that severe on a stock Da Vinci machine. What's your setup?

3 Reply by thecure

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Re: Delamination confirmation

Nothing special on my 1.0a, just printing with Hatchbox black ABS @218C/70C.   do have a 100cfm fan exiting exhaust from one of the side oval openings.  Everything else is stock.
I also printed a tall item only 3m thick with black ABS on my Duo, and experienced close to the same phenomenon.

4 Reply by rockosmodlife

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Re: Delamination confirmation

I have found that I cant use any ventilation or circulation fans during my prints in ABS. I also use a blanket to insulate the machine. If I don't follow that I get peeling corners off the print bed.

The inside of the print area is nice and toasty during printing. On my next print ill take a temperature probe to it.

Repinci 1.0 + Repetier host

5 Reply by rforeman

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Re: Delamination confirmation

thecure wrote:

Nothing special on my 1.0a, just printing with Hatchbox black ABS @218C/70C.   do have a 100cfm fan exiting exhaust from one of the side oval openings.  Everything else is stock.
I also printed a tall item only 3m thick with black ABS on my Duo, and experienced close to the same phenomenon.

I use Hatchbox white ABS and I always have to print with the temp at 230c/100c

6 Reply by georgehine

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Re: Delamination confirmation

my parts spit if they are aver 3 inch tall in my da vinci. also my corners always seem to bow up even on smaller parts.

Da Vinci 1.0 stock firmware and stock xyzware.
3D printer Noob.
Stock ABS filaments

7 Reply by thecure

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Re: Delamination confirmation

I never have troubles with parts not sticking, or very rarely corners that curl.
If I print at 100C bed temp, this results:
http://voltivo.com/media/kunena/attachments/690/20141227_203347.jpg
70C tends to stick better for me.  Actually it's more difficult to remove the prints after cooled down than when printing at 100C.

I don't think the cold air outside makes it's way inside the unit since the fan is blowing hard.  I have yet to setup a temp sensor.  I may try to insulate the inside, and/or put a small heater inside to elevate the temperature gently.

8 Reply by boxcarmib

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Re: Delamination confirmation

in my experience i've adopted the following as my rule of them: delamination = filament not hot enough; edges curling = bed not hot enough and/or not enough adhesive; warping = object not cooled enough and/or printing speed too fast. The only ongoing problem that I've had difficulty mastering is warping but only in the first 10 mm of the print. I try to run a stock machine, but fixing this is too complicated for XYZware. I've been using simplify3d with success by running with the extruder temp constant but dropping the bed temp 10~20 degrees for the first 50 layers (at .2 resolution), and then cranking it up again when that time has passed. I also use the simply3d feature to reduce the printing speed when any layer is under 30 seconds of printing. It would be nice if simplify3d had the ability to set different print speeds as setpoints, but unfortunately that is not a feature it currently offers.