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Topic: 3d Print curls up after a few layers.. any suggestions?

Hey Folks,

I have been struggling with the press for a while now.  I am not a 3d printing expert, so please take it easy on me.  I've used blue masking tape and aquanet on the glass to try to make the print stick.

When the 3d print starts.. the first few layers seem to be sticking and nice and flat.  I then walk away, thinking everything is going well.  I then eventually find the object has dislodge from the glass or the edge has totally curled up.

Are there any suggestions?  More Aquanet, higher bed temp, a sacrifice and chicken bones?  I am frustrated that I have not yet printed a single object to completion.

Thanks in advance.

- Ton

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Re: 3d Print curls up after a few layers.. any suggestions?

What temperature are you printing at and bed?

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Re: 3d Print curls up after a few layers.. any suggestions?

hey qtoppa.

I believe its 230/95

- Ton

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Re: 3d Print curls up after a few layers.. any suggestions?

I use glue sticks and a temp of 100 and have no problems at all.

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Re: 3d Print curls up after a few layers.. any suggestions?

Goshdarnit,

Thanks.  I have read about using glue sticks.  I will go ahead and get some purple elmer glue stick and move up the bed temp to 100c.

I will post my results later.   Thanks for the help gues.

- Ton

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Re: 3d Print curls up after a few layers.. any suggestions?

For bigger objects or objects with little bed contact, you can also add a brim in the slicer settings.

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Re: 3d Print curls up after a few layers.. any suggestions?

Wohoo!!!  My prints are sticking now.. which is great.  The glue stick works well and actually much easier to apply then aquanet.  With the glue stick I can actually apply it to the area where the object will be located.  The purple color makes it easy to see where it is applied or missing.

Trayracing - thanks for the tip on the brim in slicer.  I haven't even been able to jump into slicer, but will take a look.  Thanks again.

Now I have two other annoying issues.  Going to hunt through the forum.  Have any of you guys encountered / fix these issues:

1.  Cable from Extruder head gets pinched during autoleveling.
2.  Extruder jams during printing. 

- Ton

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Re: 3d Print curls up after a few layers.. any suggestions?

2 things spring to mind.

1: That's a common issue. A lot of people use a rubber band, but I solved it just by putting a cable tie around the cable and looping it through the gap between the hinge in the back left corner of the Press. That forces the cable to lie sideways from left to right and stops it getting in between the extruder and the left hand side of the Press, which is what causes the problem.

2: I am going through this too. I suspect it is down to the ABS absorbing moisture, as I have been running the printer so much that I just left the filament in it. It's been in there since I got it, so not stored in a closed box with desiccant. The last couple of days I am getting really bad extruder jams, which wasn't happening before. I'll try with some new filament once my desiccant arrives. Don't want to open my new filament until I've got a means to store it properly. Desiccant is due for delivery within the next couple of days.

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Re: 3d Print curls up after a few layers.. any suggestions?

You can dry filament in the oven, must be below 100c.

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Re: 3d Print curls up after a few layers.. any suggestions?

Hey. .Goshdarnit,

Thanks for the response.  I have been seeing reference to the rubberband trick for the cable being pinched, but I have not see a picture of it being used.  Do you have a picture of your cable tie trick?

Goshdarnit & Trayracing,

Is moist ABS really an issue?  I am in SoCal, so its not to humid down here.

- Ton

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Re: 3d Print curls up after a few layers.. any suggestions?

I'm not aware of moisture causing extuder jamming during printing. (I should have labelled my addition as a side comment to Goshdarnit.)

Moisture impacts warping a bit in ABS. Drying the filament did let me finish one print that was getting enough shell warping that the nozzle knocked the part loose from the platform. (The filament in my Press was shipped unsealed across the ocean, so in those weeks it picked up some moisture.)

Moisture can cause other problems, but if you live in a dry area and aren't making structurally demanding parts, then it's not too much of an issue for ABS.

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Re: 3d Print curls up after a few layers.. any suggestions?

I'm drying my stock filament out now. I'll let you know if it changes things. I've also taken my extruder off and given it an acetone bath.

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Re: 3d Print curls up after a few layers.. any suggestions?

trayracing wrote:

I'm not aware of moisture causing extuder jamming during printing. (I should have labelled my addition as a side comment to Goshdarnit.)

Moisture impacts warping a bit in ABS. Drying the filament did let me finish one print that was getting enough shell warping that the nozzle knocked the part loose from the platform. (The filament in my Press was shipped unsealed across the ocean, so in those weeks it picked up some moisture.)

Moisture can cause other problems, but if you live in a dry area and aren't making structurally demanding parts, then it's not too much of an issue for ABS.

In the name of clarity for others reading this...
Moisture in ABS filament can and does cause extruder jamming issues.  As the moisture boils off it creates back pressure in the nozzle making it harder for the filament to extrude.  That isn't smoke coming out of the nozzle it is steam.  If you don't see it, look closer. 
I have had moisture in filament cause an extruder jam in a BulldogXL which is near impossible to jam.

Printit Industries Model 8.10 fully enclosed CoreXY, Chamber heat
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions

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Re: 3d Print curls up after a few layers.. any suggestions?

wardjr wrote:

I have had moisture in filament cause an extruder jam in a BulldogXL which is near impossible to jam.

Wow, that sounds like pretty soggy ABS - I take it you're not near TiTON?  If your filament is *that* moist, it'll also probably come out bubbly and bumpy from steam pockets, like moist nylon. (nylon picks up a lot of moisture easily.)

I haven't had that problem with ABS, but it's pretty dry here and I keep my filament boxed up.  It's interesting - on reprap.org, I've seen people post on both extremes - some swear that they print flawlessy in sweaty seaside summers leaving their filament hanging on their printer, while others store their filament under vaccuum and heat their bowden tube to pre-dry filament. Makes me wonder if different plastic recipes behave differently within a plastic family such as ABS.

I will note that professional injection molders carefully pre-dry their pellets before molding, (especially for PLA), where the heat and dwell time, combined with moisture, can partially decompose the plastic, making it brittle and weak.  Reprap opinions are all over the map as to how much that applies to FDM, due to the differences in temp and dwell time. (Nice topic for a college paper, someone out there?) I have yet to see a post on measured moisture level for filament stored over dessicant. (Nice science fair project?) I use dessicant anyhow because it's easy.

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Re: 3d Print curls up after a few layers.. any suggestions?

I have learned that there is a difference in ABS filament and how different brands react differently.  I also know that it can be too dry as well.

Printit Industries Model 8.10 fully enclosed CoreXY, Chamber heat
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions

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Re: 3d Print curls up after a few layers.. any suggestions?

Wow.. I am learning so much.  I just wanted to comment on the last two issues I had, and what I did to fix it.

1. Pinching Issue with Cable.  I was using a rubber band.. but it kept on slipping off.  It wasn't thick enough to securely sit in the slot for the wire.  All it did was put a knot in the rubberband and jammed it in the slit.  Now it is not coming loose.

2.  Extruder Jamming - Well.. I was looking through the forum and I guess my extruder isn't jamming in the sense of being clogged.  I think my issue is referred to as the "Thumping" issue.  I took the advice of other forum members and tweaked the pot.  I only needed an 1/8 of a turn, and now no more thumping sound.

I was actually able to successfully print an object to completion!!  I am pretty stoked.  My press was part of the second batch that arrived.  I have been so busy that I havne't had time to really tackle these problems.  Thank you everyone for your help!!  Just to let you know.. in this time span.. I only received 2 responses from Solidoodle support tongue

- Ton

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Re: 3d Print curls up after a few layers.. any suggestions?

Sorry for the delay. Here are a couple of pics of my cable tie bodge.

http://soliforum.com/i/?QvxUk3r.jpg
http://soliforum.com/i/?6DczWnG.jpg

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Re: 3d Print curls up after a few layers.. any suggestions?

Awesome.  Thank you for the picture.  I really do appreciate.  I have to try to secure it to that location.

19 (edited by madfalcon81 2015-03-31 19:24:42)

Re: 3d Print curls up after a few layers.. any suggestions?

I totaly removed the plastic cover of those cables. So far so good, but I hope my cables wont fry.

Fat kids are harder to kidnap!

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Re: 3d Print curls up after a few layers.. any suggestions?

On the filament discussion, I have had success. I did 2 things, and am not sure which of them did the trick.

1: I dismantled my extruder and put the hot end in an acetone bath for a couple of days.

2: I put the filament in the oven at 95 degrees C for an hour and then stored it in a sealed container with some desiccant.

As I say, not sure which one fixed it, but I suspect it was drying the filament out. Either way, the continual extruder jams stopped once I did these things.