Anything I should be concerned about here? (overhangs and stuff)
 
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Rick Lohr
(@rick-lohr)
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Topic starter answered:
RE: Anything I should be concerned about here? (overhangs and stuff)

 

Posted by: @sylviatrilling

 

Posted by: @rick-lohr

As a learning tool, here is the .3mf for the cup holder.  What would I change to address the bulge problem and the artifacts around the handle?

The artifacts around the handle are seams. You can preview where the seams will land (any many other useful things) by using the menu at the bottom of the page where you see your sliced item and then compare to the print. You already read the article about seams. You have options for controlling where they land. Depending on the filament you can take them off with sandpaper but test the sandpapering first to see how it affects the finish. 

Thanks.  That's a great tool.  I changed the seams to rear and I much prefer how it looks.

 

Posted : 14/01/2022 9:25 pm
Rick Lohr
(@rick-lohr)
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Topic starter answered:
RE: Anything I should be concerned about here? (overhangs and stuff)

Much, much, much better!  Thanks.

Posted : 15/01/2022 2:45 pm
Rick Lohr
(@rick-lohr)
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Topic starter answered:
RE: Anything I should be concerned about here? (overhangs and stuff)

Now, what's up with this little beauty?

Posted : 15/01/2022 2:48 pm
sylviatrilling
(@sylviatrilling)
Honorable Member
RE:

 

Posted by: @rick-lohr

Good to know.  You are telling me exactly what was expected.  You got some great links to start me on that journey? (extrusion width and layer heights)

I believe I found a useful post from @Swiss_Cheese about lines and bulges and extrusion widths. https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-how-do-i-print-this-printing-help/lines-and-bulges-in-printed-object/paged/2/

Mk3S+,SL1S

Posted : 15/01/2022 4:08 pm
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Rick Lohr
(@rick-lohr)
Trusted Member
Topic starter answered:
RE: Anything I should be concerned about here? (overhangs and stuff)

 

Posted by: @rick-lohr

Now, what's up with this little beauty?

It does not show up in the slicer but it's in my print.

Posted : 15/01/2022 4:20 pm
sylviatrilling
(@sylviatrilling)
Honorable Member
RE: Anything I should be concerned about here? (overhangs and stuff)

I don't know what that is, but I suggest you ZIP your .3mf (it must be ZIPPED or it won't attach) and post it to the forum and see if anyone has an answer.

Mk3S+,SL1S

Posted : 15/01/2022 4:36 pm
Rick Lohr
(@rick-lohr)
Trusted Member
Topic starter answered:
RE: Anything I should be concerned about here? (overhangs and stuff)

 

Posted by: @sylviatrilling

I don't know what that is, but I suggest you ZIP your .3mf (it must be ZIPPED or it won't attach) and post it to the forum and see if anyone has an answer.

Attached.

Posted : 15/01/2022 6:49 pm
Rick Lohr
(@rick-lohr)
Trusted Member
Topic starter answered:
RE:

No bulge.  No artifact inside by the handle.  Seams need some cleanup. Still have the one z line near the bottom.

 

Downloaded Cura and sliced it with that.  Figured I should have that option anyhow.

That rules out printer and STL file problems.  It's something with the Prusa Slicer.

I did notice the infill was a cross hatch pattern rather than the circley thingys.

 

Rick

 

 

 

This post was modified 4 months ago by Rick Lohr
Posted : 16/01/2022 2:19 pm
Rick Lohr
(@rick-lohr)
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Topic starter answered:
RE: Anything I should be concerned about here? (overhangs and stuff)

What is the general consensus on Cura vs the Prusa Slicer?  Is there reason to use one over the other?  

Posted : 16/01/2022 8:04 pm
Swiss_Cheese
(@swiss_cheese)
Noble Member
RE: Anything I should be concerned about here? (overhangs and stuff)

No, use what works best for you, I do prefer PrusaSlicer, but I will use Cura and Ideamaker  and SuperSlicer if they can do what I need. I get the impression that many of the more serious users are of the same mind set, Use what works.

I will add this caveat, spend the time to learn one really well first, regardless of what one you pick, jumping back and forth as a new user to printing tech & software can stunt your development.

 

Regards

 

Swiss_Cheese

The Filament Whisperer

Posted : 16/01/2022 8:29 pm
Rick Lohr
(@rick-lohr)
Trusted Member
Topic starter answered:
RE: Anything I should be concerned about here? (overhangs and stuff)

 

Posted by: @swiss_cheese

No, use what works best for you, I do prefer PrusaSlicer, but I will use Cura and Ideamaker  and SuperSlicer if they can do what I need. I get the impression that many of the more serious users are of the same mind set, Use what works.

I will add this caveat, spend the time to learn one really well first, regardless of what one you pick, jumping back and forth as a new user to printing tech & software can stunt your development.

 

Regards

 

Swiss_Cheese

Thanks.  I would like to do exactly that and become knowledgeable on the Prusa Slicer since I may well go to the MMU at some point and my understanding is that I would need to use the Prusa Slicer for that.  (Correct me if I am wrong here)

That having been said, I'm not sure where to go with the couple issues I have.  Most of them go away with default Cura settings but seams look nicer with the Pruser Slicer.

Posted : 16/01/2022 8:47 pm
Rick Lohr
(@rick-lohr)
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Topic starter answered:
RE: Anything I should be concerned about here? (overhangs and stuff)

It's been two days with no response, so I've either not posted this in the right place or asked the wrong questions, lol.  

1) Is the bulge problem I am having a Prusa Slicer problem or a settings problem?

2) If it is settings, what settings would impact this?

If this is the wrong place to be posting these questions, what is the right place?

Posted : 18/01/2022 2:06 pm
sylviatrilling
(@sylviatrilling)
Honorable Member
RE: Anything I should be concerned about here? (overhangs and stuff)

Did you read this thread that I posted on the 15th? https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-how-do-i-print-this-printing-help/lines-and-bulges-in-printed-object/paged/2/

Mk3S+,SL1S

Posted : 18/01/2022 2:42 pm
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Rick Lohr
(@rick-lohr)
Trusted Member
Topic starter answered:
RE: Anything I should be concerned about here? (overhangs and stuff)

 When I originally read that I didn't think it applied to my test case because I thought that area isn't an especially thin wall and the bulge does not show up at all in the preview like the link shows.  Thanks for reminding me.  I will try that tonight regardless.  

Posted : 18/01/2022 8:32 pm
Swiss_Cheese
(@swiss_cheese)
Noble Member
RE: Anything I should be concerned about here? (overhangs and stuff)

@rick-lohr

It's been two days with no response, so I've either not posted this in the right place or asked the wrong questions, lol.  

just to be clear, and I mean this in a friendly way, we don't work for Prusa, we are users just like yourself, even the moderators here are users volunteering time to help those like minded persons. when sharing what we have learned, sometimes it takes a while to get answers and sometimes they come fast, please keep this in mind.

(Admins work for Prusa)

 

Now for this bulge thing,

I will not direct persons to that thread, I cringe when I see another user refer someone to that thread. There is no one problem that creates the types of blemishes seen in that thread, the problems reported in that thread are numerous and come from different sources, even different slicers. I have been through the thread and see at least 20 or so different issues that can be corrected. However that thread got to be the way it is because we have a lot of the blind leading the blind that happens here, they just don't know any better. Now it's grown to the point that so many people that didn't know how to fix their prints or even that they could fix them, have banded together and some have taken to devoting themselves to solving the mystery, still others give up and blame Prusa, occasionally you will see a user touting that they have solved it! Just do this, and it will go away, but all they have really done is inadvertently stumbled upon a way to tune a very specific issue for a very specific model with a very specific problem, and they are soon shot down as someone else will join with yet another set of specific issues that needs to be tuned away, and saying that didn't work for me. I have tried to explain this in the thread. You might as well run into a church and tell the parishioners god is a lie, there are to many of them and they won't believe you unless you literally fix every single one of their problems for them individually, and most of them think they are sharing the same problem.

So in order to keep this short, every single print is different, each has it's own challenges, PrusaSlicer and the like are Tool Boxes, it's up to you to learn how and when to use those tools, there is no make perfect print button, there is no mapped out way, and "We" The users try to help each other (as much as we can) to move forward in this process, it takes time, years to learn all this, pace yourself, your not going to learn it all in a couple months, but you can get up and running. In your particular case Sylvia sent you to one of the best threads that is available to help you to understand the use of extrusion width and your model will benefit from it, this is a good one for your education even though the admins deleted the project files that went with it.

 

Regards

 

Swiss_Cheese

 

The Filament Whisperer

Posted : 19/01/2022 12:25 am
Rick Lohr
(@rick-lohr)
Trusted Member
Topic starter answered:
RE: Anything I should be concerned about here? (overhangs and stuff)

Thanks, I didn't mean to be impatient and I appreciate the support.  I guess I'm just now starting to realize that the bulge problem is common and has more than one underlying reason.  I was under the misconception that a Prusa Admin or a seasoned user would be able to solve my problem in a heartbeat since they have the required knowledge.  It's a bit frustrating to me that Cura defaults solve my problem but with the Prusa Slicer its going to take a multi month journey.  Not that I don't like journeys, but I didn't really expect to happen on to Mt Everest on my first handful of prints, lol.

Posted : 19/01/2022 12:41 am
Rick Lohr
(@rick-lohr)
Trusted Member
Topic starter answered:
RE:

 

Posted by: @sylviatrilling

Did you read this thread that I posted on the 15th? https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-how-do-i-print-this-printing-help/lines-and-bulges-in-printed-object/paged/2/

Woohoo!  It turns out the link you pointed me to which I stupidly did not try did clear my bulge.  I'm quite sure the print in progress is passed the bulge stage.  Thank you both!

The changes I made were:

Perimeters = .39

External Perimeters = .39

Perimeters = 2  (Doubt that had anything to do with it)

==============================================

Next problem, is there a way to fix the artifact on the top edge of the round window tops on the Benchy?

 

This post was modified 4 months ago by Rick Lohr
Posted : 19/01/2022 1:53 am
Rick Lohr
(@rick-lohr)
Trusted Member
Topic starter answered:
RE:

 

I'm pretty happy with that print.  What are the down sides to those mods or can I just use them for most prints?

This post was modified 4 months ago by Rick Lohr
Posted : 19/01/2022 12:21 pm
Rick Lohr
(@rick-lohr)
Trusted Member
Topic starter answered:
RE: Anything I should be concerned about here? (overhangs and stuff)

So I did what Sylvia pointed out and shifted my attention from the printer to actually printing.

My brother-in-law asked me to make him a replacement part for his RC helicopter.  It turned out to be a great way to learn Blender. I went from not knowing how to do something as basic as cutting an object in half to making a half way decent model of his part.  I'm not saying it wasn't painful.   I put quite a few late nights into getting it right but he is very happy with the result and I acquired a mountain of knowledge.  I'm quite sure there were easier ways to do things but that will come over time.

I'm pretty happy with the print quality.  I left in the fixes I used for the cup holder and moved the seams to the rear.  That seems like a winning combination for me so far.  This was also a chance for me to try the "support" functionality and it worked quite well.  (not on these pictures though).

I've officially burned through my first roll of filament.  I ordered more from Prusa and have to wait till Thursday for not having the foresight to get it on order earlier.

 

Thanks for the great help you guys gave me getting started.  I couldn't have accomplished so much without it!

 

 

 

 

Posted : 24/01/2022 8:38 pm
Rick Lohr
(@rick-lohr)
Trusted Member
Topic starter answered:
RE:

The bright side of starting with a hard model in Blender is it put me in a position where it was really easy design and print an easy part.  I designed and printed this tool for leveling the swash on a helicopter in a single evening.

 

IMG_2042

 

 

 

 

This post was modified 4 months ago by Rick Lohr
Posted : 24/01/2022 8:42 pm
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