1 Topic by slowjett

  • slowjett
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  • Registered: 2013-10-21
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Topic: Some general guidance needed.

Hello guys having some issues.. I have an SD3. Ive done the calibrations and such and Ive been experimenting with different methods to get filament to stick well. Im getting more successful, but I've run into another problem.

When printing somthing that curves outward from the base, or filling the top of a round hole the filament is not sticking or its dragging away from where it should be. I've tried slowing it down, adding other things to the bed to print because I thought it was just too hot, but the problem persists even at a super slow speed. So Im not sure whats doing it. Here is an example of whats happening. I was trying to print this tic tool, which I have printed before and its worked fine.

thingiverse com/thing:22786

But today the result is this and I cant figure out why...

I cant post links for some reason..

Youtube these:

BeszOeGq3ow

FddqY2HbSnQ

And; A previous print on the right, current try on the left.

i.imgur.com/xMPrldq.jpg

Any help for a noob would be great!

Thanks!

2 Reply by Shotline

  • Shotline
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  • Registered: 2013-06-12
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Re: Some general guidance needed.

The main problem I see is you are printing too fast.  The previous layer is not getting enough time to cool which is causing it to curl up.

You say you have printed it before and if that is true then you need to determine what has changed between then and now (different filament, etc.).  You may benefit from adding a nozzle fan to help cool the plastic faster.

3 Reply by slowjett

  • slowjett
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Re: Some general guidance needed.

Thats what I thought so I slowed it way down, still have the problem. Printed it two days ago, same filament no issues. have been playing with z height and my bed temp is a lot higher. Im lowering bed temp now to see if it makes a difference.

4 Reply by slowjett

  • slowjett
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Re: Some general guidance needed.

ok so I thought I slowed it down, apparently I dont know how to. I changed the speed settins before slicing but it is only wokring for the first 6 layers.... After about 6 layers it starts hauling ass again. Suggestions? Im not sure how to fix this?

5 Reply by muddtt

  • muddtt
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  • Registered: 2013-09-26
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Re: Some general guidance needed.

Can you take a screen shot of your speed settings?

Might want to look at cooling also. It'll automatically slow down the print speed if the layer time is shorter than a certain time you set.

6 Reply by slowjett

  • slowjett
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Re: Some general guidance needed.

I'll have to get that for you. Seems as though things are sticking after I had it mash the first layer into the bed. Seems to be working ok but now have a new problem.

Not sure what's causing this. Cooling to fast? These are top supports for a cover. I'm thinking no covert might be my issue? lifting still but only very slight on one corner. Im trying again but printing them standing up.

img.tapatalk.com/d/13/10/23/a4e3aput.jpg
img.tapatalk.com/d/13/10/23/gajebu9e.jpg

Why cant I add images with tags? I get;
"WARNING Too more links in message. Allowed 0 links. Reduce number of links and post it again."

7 Reply by COASTER19

  • COASTER19
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  • Registered: 2013-03-08
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Re: Some general guidance needed.

You need 10 posts before being allowed to post links.  It's an anti-spam feature.  What temperatures are you printing at?  It could be that the plastic is being pushed out faster than it can fully melt due to the higher speeds.  Another possibility could be slight underextrusion (although it doesn't look too much like it) causing poor bonding between layers.  I believe there are a few threads already about poor layer adherence. 

also check out this thread if you haven't seen it yet: http://www.soliforum.com/topic/3193/pri … ace-issue/