esun petg

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Matt_Sharkey
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Re: esun petg

Post by Matt_Sharkey » Mon Jul 27, 2015 8:05 pm

Thanks for the tip JSC, put that way, it does seem more out of line. I think I have the machine calibrated well as i now get a height of 2.004mm for a 2.00 mm tall block. I went for an extrusion multiplier of 1.04 Does that seem reasonable? its the only way I get the desired 0.40 thinwall thickness, so I guess the science doesn't lie....

Now for the dreaded topic of...stringing:
I'm trying out multiple methods that Slic3r will do with only a light improvement in stringing. I retract 1mm at 100mm/s crossing perimeters and z-height change. z-lift for crossing perimeters is 0.1mm.

any wise words?

Bratag
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Re: esun petg

Post by Bratag » Mon Jul 27, 2015 8:14 pm

Matt_Sharkey wrote:Thanks for the tip JSC, put that way, it does seem more out of line. I think I have the machine calibrated well as i now get a height of 2.004mm for a 2.00 mm tall block. I went for an extrusion multiplier of 1.04 Does that seem reasonable? its the only way I get the desired 0.40 thinwall thickness, so I guess the science doesn't lie....

Now for the dreaded topic of...stringing:
I'm trying out multiple methods that Slic3r will do with only a light improvement in stringing. I retract 1mm at 100mm/s crossing perimeters and z-height change. z-lift for crossing perimeters is 0.1mm.

any wise words?
That retraction seems really aggressive. I get very little stringing (at least with white, black, orange etc) with much less retraction.

What is the diameter of your filament? EM over 1 seems strange.

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Matt_Sharkey
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Re: esun petg

Post by Matt_Sharkey » Mon Jul 27, 2015 9:00 pm

Bratag wrote: That retraction seems really aggressive. I get very little stringing (at least with white, black, orange etc) with much less retraction.

What is the diameter of your filament? EM over 1 seems strange.
I had picked up those retraction numbers somewhere online[citation needed]

I thought the same, but for what it's worth, the extruder assembly that I'm printing right now is coming out wonderfully. (also has 100% cooling fan)

The filament dia is ~1.78 it is also a textured surface to make things more difficult, I have never printed with textured filament before.
Last edited by Matt_Sharkey on Mon Jul 27, 2015 9:17 pm, edited 2 times in total.

Bratag
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Re: esun petg

Post by Bratag » Mon Jul 27, 2015 9:08 pm

Matt_Sharkey wrote:
Bratag wrote:
Matt_Sharkey wrote: That retraction seems really aggressive. I get very little stringing (at least with white, black, orange etc) with much less retraction.

What is the diameter of your filament? EM over 1 seems strange.
I had picked up those retraction numbers somewhere online[citation needed]

I thought the same, but for what it's worth, the extruder assembly that I'm printing right now is coming out wonderfully. (also has 100% cooling fan)

The filament dia is ~1.78 it is also a textured surface to make things more difficult, I have never printed with textured filament before.
Well I guess if its working ... :)

For me 1.78 gives me about at .88-.92 EM. I am amazed when people say they are printing PETG with cooling. Every time I try it I get insane delamination.

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Matt_Sharkey
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Re: esun petg

Post by Matt_Sharkey » Mon Jul 27, 2015 9:11 pm

Matt_Sharkey wrote: I had picked up those retraction numbers somewhere online[citation needed]

I thought the same, but for what it's worth, the extruder assembly that I'm printing right now is coming out wonderfully. (also has 100% cooling fan)

The filament dia is ~1.78 it is also a textured surface to make things more difficult, I have never printed with textured filament before.
EDIT: as I typed this a thread pulled from a perimeter and wrecked the print
Does the Filament Drive need supports to print?

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Jules
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Re: esun petg

Post by Jules » Mon Jul 27, 2015 10:21 pm

Matt_Sharkey wrote:Does the Filament Drive need supports to print?
Yes, it does need some manual supports. (Not in the hole that the filament passes through, which is why you add it manually.) The filament holes will need to be reamed out a bit with a 2mm drill bit. (Twirled between your fingers, not on a drill.) :D

jim's post on the bits here:

viewtopic.php?f=3&t=162&hilit=hot+end+tools

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Matt_Sharkey
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Re: esun petg

Post by Matt_Sharkey » Mon Jul 27, 2015 11:37 pm

Jules wrote: Yes, it does need some manual supports.
I think you're speaking S3D language... curse you Slic3r and your open-source-short-comings.

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Jules
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Re: esun petg

Post by Jules » Mon Jul 27, 2015 11:43 pm

Matt_Sharkey wrote:
Jules wrote: Yes, it does need some manual supports.
I think you're speaking S3D language... curse you Slic3r and your open-source-short-comings.
Ooh, sorry.....yes i was. :oops: But Slic3r has to have some way of putting in some support. (Just don't fill that filament hole.)

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PcS
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Re: esun petg

Post by PcS » Tue Jul 28, 2015 1:43 am

I use s3d auto supports on everything ....they just snap right off. :D

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jimc
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Re: esun petg

Post by jimc » Tue Jul 28, 2015 1:46 am

just a heads up, william has solid red petg in stock. its the first air shipment here so as usual on 1 roll allowed per person for now. he also got in the esun polycarb which i have tried a sample of awhile back. it was really nice. it only warps about the same as abs which is pretty amazing for pc.

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