This is a new one... Pock marks

Re: This is a new one... Pock marks

MrDoctorDIV — Thu, 07 Aug 2014 09:40:29 -0400

The extrusion width and nozzle diameter are two different numbers. Your extrusion width, by rule of thumb, should be 1.2X your nozzle diameter.

I typically use 3-7 top/bottom layers depending on my layer height.

Re: This is a new one... Pock marks

isonoob — Thu, 07 Aug 2014 09:28:04 -0400

Im thinking you could proabbly get away with less solid top & bottom layers. extruder width in my experience has always been set to manual and is the same size as the nozzle diameter, it's very odd it was at .42, what is the setting for the nozzle diameter on the process vs your machine's nozzle diameter? Once you fine tune your extrusion multiplier, it's always good to measure the diameter of the filament you buy before printing and adjust it accordingly. The extrusion multiplier and filament diameter usually go hand in hand.

Re: This is a new one... Pock marks

tmorris9 — Thu, 07 Aug 2014 04:44:17 -0400

OK, I think I have it nailed down. I changed a few things

Extruder Width was set to manual & .42mm I changed to Automatic. <--- Just seemed odd

Infill was set to "Use random infill placement" turned that off.

Layers, set top layers to 12

And under "Other" (odd placement) I set Filament Diameter to 2.97mm (my filament diameter).

First print with these settings came out perfect!

Don't know of it was a combination of these settings or just one. I suspect Filament Diameter was mostly to blame.

Re: This is a new one... Pock marks

tmorris9 — Thu, 07 Aug 2014 01:06:40 -0400

So the one I just printed with 25 top layers looks perfect it's almost solid as it only had like 2 layers of infill.

Re: This is a new one... Pock marks

tmorris9 — Thu, 07 Aug 2014 01:04:05 -0400

This is just the handle of the object (sorry the rest is proprietary) and it's the part that looks bad anyway.

Now, I wanted to use the "Best" setting which is for .1mm layer height. my infill this time was 20% but the tape from above was 30%.

Now, I used the default setting for TAZ 3 (they did not have one for TAZ 4)

I got to thinking about the filament diameter setting as I did not set it myself. Took me a while to find it but it was set to 3.00mm while my filament is actually 2.87mm so that might be an issue.

Re: This is a new one... Pock marks

MrDoctorDIV — Thu, 07 Aug 2014 00:38:46 -0400

I used S3D exclusively now [for slicing, still use Repetier Host]. I've had no major issues, clean, sharp prints, and any small issues I've had I've easily fixed except one: thin walls cause problems with S3D. Slic3r had its limits, but S3D's seems to be thicker in its limit. It just trashes the wall and will not print it. The 0.5mm calibration cube prints as nothing when sliced with S3D. I have a 0.3mm nozzle. I haven't run into anything that this poses a real threat to, so I haven't bothered to figure out why or how to get around it if possible.
Beyond that, on the slicer side it's the best I've used, better by far than the printer I've used it with. My new printer I'm building will truly tell its tales.

Re: This is a new one... Pock marks

isonoob — Thu, 07 Aug 2014 00:04:11 -0400

care to share the model? I've had nothing but great prints, I know mrdoctordiv is a fellow s3d user on this board and has been getting great prints as well.

here we both printed a t-rex shower head:
[forums.reprap.org]

Re: This is a new one... Pock marks

tmorris9 — Wed, 06 Aug 2014 23:52:37 -0400

Quote
MrDoctorDIV
Just throwing out my potentially useless thought:
You were using the same temp on both, correct? I've noticed in my limited tests that ABS will parse like that along bridging areas when temp is too low.

Yes, same temp but not a useless post because you never know.

I did a different model tonight with 12 top layers and it's terrible. 2 of the same parts, one had holes in it with some infill sticking up a tiny amount. The other has bubbles where the top layer is sticking up a bit. I am beginning to wonder if there is an issue with the infill, it's really ugly. Printing another right now with 25 top layers but turns out that is nearly solid with only a few layers of infill.

Re: This is a new one... Pock marks

MrDoctorDIV — Wed, 06 Aug 2014 23:46:56 -0400

Just throwing out my potentially useless thought:
You were using the same temp on both, correct? I've noticed in my limited tests that ABS will parse like that along bridging areas when temp is too low.

Re: This is a new one... Pock marks

isonoob — Wed, 06 Aug 2014 20:35:53 -0400

Quote
tmorris9

The text problem was actually a failure in the file, it had errors that even netfabb basic could not fix. I guess Simplify3D was more forgiving in that respect.

ahh I see, If it was missing manifolds/triangles in the STL file, I know s3d does mesh repair, believe the setting for errors is in the advanced or other tab forget which one. Been using it for a few months now.

Re: This is a new one... Pock marks

tmorris9 — Wed, 06 Aug 2014 15:01:14 -0400

Quote
isonoob

Quote
tmorris9
So I remade it using Slic3r and the results are perfect... Hope I didn't waste $140 on Simplify3D, it's suppose to be way better than Slic3r.
I wouldn't say "perfect". It seems like the text came out much nicer in your s3d print. Higher infill + more top layers, as I'm sure you've already gathered...

The text problem was actually a failure in the file, it had errors that even netfabb basic could not fix. I guess Simplify3D was more forgiving in that respect.

Re: This is a new one... Pock marks

isonoob — Wed, 06 Aug 2014 11:24:20 -0400

Quote
tmorris9
So I remade it using Slic3r and the results are perfect... Hope I didn't waste $140 on Simplify3D, it's suppose to be way better than Slic3r.

I wouldn't say "perfect". It seems like the text came out much nicer in your s3d print. Higher infill + more top layers, as I'm sure you've already gathered...

Re: This is a new one... Pock marks

Sublime — Sat, 02 Aug 2014 02:04:09 -0400

Glad I could help.

Quote
tmorris9
By the way I am a logical thinker and I like to understand why something needs to be set the way it is rather than someone just saying set it at this with no explanation. Sublime you showed me with the calculation something I had not considered before (layer height x layer numbers = thickness) it seems so simple now and I feel a little stupid for not thinking of it that way. So thank you.

Re: This is a new one... Pock marks

tmorris9 — Fri, 01 Aug 2014 22:55:49 -0400

By the way I am a logical thinker and I like to understand why something needs to be set the way it is rather than someone just saying set it at this with no explanation. Sublime you showed me with the calculation something I had not considered before (layer height x layer numbers = thickness) it seems so simple now and I feel a little stupid for not thinking of it that way. So thank you.

Re: This is a new one... Pock marks

brucehvn — Fri, 01 Aug 2014 22:55:38 -0400

Try printing something smaller and less time consuming first with your current settings and see if you can duplicate the problem. Maybe a 20mm calibration cube or something, then you can test a lot of different settings without waiting 5 hours every time :)

Re: This is a new one... Pock marks

tmorris9 — Fri, 01 Aug 2014 22:42:51 -0400

OK, if I try Silmplify3D again I will just double it to 8 layers and see what happens.

Thanks!

Re: This is a new one... Pock marks

Sublime — Fri, 01 Aug 2014 21:59:34 -0400

With that said you were printing 0.14 * 4 = 0.56 mm's so at 0.1mm layers you should have at least 6 layers to have the same top and bottom thickness. But with 0.1mm layers you may find you need even more since 0.1mm layers do not bridge well and take a few extra to make a solid base for the final layers.

Re: This is a new one... Pock marks

tmorris9 — Fri, 01 Aug 2014 21:47:23 -0400

Oh, and both were set to 30% infill

Re: This is a new one... Pock marks

tmorris9 — Fri, 01 Aug 2014 21:46:37 -0400

It was the default TAZ high quality setting. It was .1 layer height. On my old printer I always used either 3 or 4 top layers. Just checked the Slic3r (with Lulzbot supplied settings) and it was .14 layer height with 4 top layers.

I am not going to test this model again as it took over 5 hours to print.

Re: This is a new one... Pock marks

Sublime — Fri, 01 Aug 2014 21:40:10 -0400

You say "4 top layers so that's not it" but sometimes for certain infill percentages and layer heights you may need 20 layers to make a solid top. My rule is usually I try and make the top and bottom 1mm - 1.5mm thick (thickness is also the way Kisslicer and Cura set the the top and bottom since layer count means very little without layer thickness being taken in to account). So if you are setting it based on layer count and you are using 0.1mm layers and medium to dense infill you will want at least 10 layers. If you are using 0.1mm layers and low infill I would set it to at least 15 layers.

Re: This is a new one... Pock marks

waitaki — Fri, 01 Aug 2014 21:33:00 -0400

Just shows you what effect different slicers can have!
Thanks

Re: This is a new one... Pock marks

tmorris9 — Fri, 01 Aug 2014 21:01:31 -0400

So I remade it using Slic3r and the results are perfect... Hope I didn't waste $140 on Simplify3D, it's suppose to be way better than Slic3r.

This is a new one... Pock marks

tmorris9 — Fri, 01 Aug 2014 17:22:37 -0400

So I am using my new TAZ 4 and I bought Simplify3D and used it's TAZ setting with highest quality for this print. Oh and it took like 6 hours.

Looks like it had chicken pocks or something.

4 top layers so that's not it and ABS filament that I have great prints with in the past.

The preview looked good. Printed at 230c