Questions tagged [slicing]

Questions about slicing. Problems and challenges in the slicing process of models should use this tag.

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1answer
887 views

Ultimaker Cura is not always retracting in exported G-Code

TL;DR: Upper layers of a stringing pyramid test are missing retractions in the G-code. Edit 1: added printer info and additional settings. Edit 2: Clearing up confusing wording. Update: I wrote a ...
2
votes
1answer
411 views

How do slicers convert an STL file to G-Code?

I was wondering how slicers work, how their code runs to generate a G-Code file. How is an STL file interpreted through a slicer. How does the math work for generating supports, build plate adhesion? ...
5
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3answers
782 views

Strange walls/faces when importing self made model from Blender to Cura 3

I wanted to create a coin stacking device similar to this one: https://www.thingiverse.com/thing:499177 But I wanted to only 3 coins, 5c, 2c, and 1c. Unfortunately the STL came in pretty messy after ...
6
votes
3answers
4k views

Messy top layer with PETG filament?

I'm having issues getting PETG to print nicely. I have encountered pretty much every issue because when I fix one thing another issue pops up. I see people saying that you should "just copy your ...
3
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1answer
382 views

Do SLA printers have open source slicers available to use?

Does anyone know of a (manufacturer independent) software that supports different types of SLA printers? Since there are many different SLA type printers around, I was wondering if there are any ...
13
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4answers
7k views

Why do some models appear broken in slicing software?

In my slicing software (Slic3r) some of the vertices/walls of my model seem to have disappeared, so that the inside of the model - which should be solid - is visible, while the surface appears as a ...
0
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1answer
625 views

Deactivate combing in first layer

I noticed a problem with the combing feature. When I print the first layer with combing set to “not in skin” the extruder does not retract on the first layer. That leads to ugly oozing strings in the ...
0
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0answers
215 views

weird part slices with horizontally printed holes

I just made a remix of that mod to have a more rigid chassis for Z axis. While the parts are a little too heavy to my taste, I did import the STL to FreeCAD and made some adjustments before printing. ...
4
votes
1answer
337 views

How to resume an unfinished project

I was printing a lid for a box in my Ender 3 pro printer. But I don't know why it stopped printing and moved aside when it does in finished printings. This happened at midnight and I didn't see it ...
0
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2answers
619 views

Brim around just one section

I'm looking to print this item: https://www.thingiverse.com/thing:4274950 I want to lay it flat on the bed, 90° to how it's shown on Thingiverse. The problem is there's the one little corner on ...
2
votes
1answer
253 views

Alternating number of lines for the shell between layers

Is is possible to have alternating numbers of lines for the outer wall between each layer? So, say, one layer will have 3 lines for the wall, the next layer, 2, then the next layer 3, then 2 again, ...
2
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0answers
90 views

Weird solid infill for chamfer

I am very frustrated with some weird solid infill issue, mostly due to sloped wall such as chamfer for fillet. Here is an example. I have a 20x20x20 mm cube with 2 mm rounded chamfer at the ...
1
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1answer
2k views

CubePro Alternative Slicer

So, having bought this cube pro duo 3d printer a few days ago I have come to see how significantly limiting the default slicer software that comes with the machine is. For the prints that I am doing I'...
0
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1answer
169 views

Big cracks on the Layer view in the Preview mode of Cura

I designed a part on Fusion 360 that looks like this: The part is very small, about 20 mm for 10 mm. I'm then importing it to Cura and I notice they are huge cracks on the part when ...
0
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2answers
41 views

Simplify3D, connection disapear after slice

I have a problem with some models like this (trim_tabs version) : https://www.thingiverse.com/thing:3401852 When I import the model on simplify, the tabs are sticky to the model (see pic3.png) but ...
5
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2answers
602 views

Which 3D design softwares make multi-material amf or other design files that slic3r will slice?

I'm looking for suggestions for 3D design software which support designing multi-material parts. I will be printing on a multi-extruder machine based on RepRap firmware. The printer will handle the ...
1
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1answer
321 views

Why are skirts designed the way they are?

I understand the purpose of printing with a skirt (or at least, I think I do): it gets the filament warmed up and flowing properly, in order to avoid extrusion problems while starting to print the ...
3
votes
1answer
432 views

How to slice thin curved wall

I'm trying to print a part with thin walls. I've designed it with wall 1.2 mm thick, so that I should get three 0.4 mm lines. This works just fine for the straight lines, but for the ...
4
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2answers
2k views

Failing slow extrusion after upgrade to E3D hotend

I recently upgraded to a E3D full hotend and I started to have problems with slowly printed parts. After I print first object and start next one, then the first layer has serious issue. The first two ...
2
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0answers
65 views

Seeking documentation for Apex slicer on AirWolf 3D printer

I have been, unsuccessfully, in contact with AirWolf and have concluded that there is no formal documentation available for their Apex slicer software that would explain what all the various ...
2
votes
2answers
200 views

How to slice a model to ensure at least a certain amount of filament per layer?

I am designing a part with a material which can bear up to a certain stress. To keep the stress within the design limits, I need to ensure a certain surface of solid material per layer, in other ...
0
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0answers
324 views

Tuning time estimates in Cura

Cura consistently under-estimates my print times. I know I'm not alone here, but I've also noticed it seems most of the difference comes from travel and retraction times... that is, if I re-slice an ...
3
votes
2answers
659 views

Smaller outer layer height?

I am printing minis and other very detailes stuff and I find that 0.04 mm layer height gives the best looking (smoothest) result. However it takes a long time, so I am looking for ways to speed it up. ...
2
votes
2answers
1k views

Gaps in Cura's Slicing for Monoprice Select Mini V2

Why does this happen (circled in red), and how can I fix it? It is making my prints come out horrible. Not shown in the picture, but the option "Coasting" was Enabled: Coasting Volume 0.064 mm3 ...
2
votes
2answers
1k views

How to determine real printing speed (TEVO Tarantula/Cura)?

Recently I noticed that Cura always is giving me less printing time than the print itself takes on my TEVO Tarantula with Marlin firmware. The time difference is about 15 %, at requested 50 ...
5
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2answers
129 views

Does CuraEngine get some advantage slicing cylinders to move the head back to the center twice on each layer?

To date I have used RepG and Repetier with CuraEngine to do my slicing. In various instances when printing a layer of a cylinder it will start in the middle and head out toward either side. Then it ...
4
votes
3answers
330 views

Slicing directly from non-mesh data?

This is a bit of a weird question, and I imagine the answer might simply be "no." But here goes anyway: I'm writing some code that generates shapes for 3D printing via "implicit surfaces," i.e. a ...
6
votes
3answers
178 views

PLA printings always ~0.22% larger

I was trying to print parts for a small CD-ROM drive based plotter based on this thing https://www.thingiverse.com/thing:3521286 But as tolerances are very small and need to match the existing parts, ...
9
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1answer
3k views

Slicer line width vs. extrusion multiplier for layer adhesion?

My question would like to address what would be better for adhesion and general quality and possibly strength: either increase the slicer line width option or increase the slicer extrusion multiplier ...
2
votes
1answer
246 views

Why and how am I supposed to change the extrusion multiplier? [duplicate]

The slicing software knows exactly (given accurate E-step, filament diameter, nozzle diameter values) how much cold plastic is pushed in the extruder and how much mass is extruded. Why should the ...
3
votes
2answers
290 views

Understanding water soluble support structures

I've just done my first print on an Ultimaker 3 Extended and I'm slightly disappointed with the results, so I'm trying to understand how I can do better next time. My first print Preparing for ...
0
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1answer
70 views

Problem with first and last layers

I bought Ender-5 and if I print sample model in bundle SD, it’s just perfect. But when I tested basic cube with raft, its base and top is just ugly. Even thought its 4 sides are perfect. Ultimaker ...
4
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2answers
1k views

Slow down first layer above infill in Ultimaker Cura

In Ultimaker Cura, is there a setting to slow down just the first layer (or two layers) covering over the infill? I'm not talking about the top layers, since you may have infill covered over during ...
7
votes
4answers
8k views

How can I create PNG image files from STL files?

I need to add some simple image renders of STL files to a document. I currently open the STL files in Preview or one of the slicers and grab a screen shot. Is there an easier or automatic way to ...
13
votes
4answers
28k views

Why is it conventional to set line width > nozzle diameter?

I recently became curious about the Line Width setting in Cura and why one might change it if they aren't using different size nozzle. Since I've gotten my Ender 3, I've always kept the line width ...
3
votes
2answers
216 views

What slicer settings would produce the strongest part?

If a part is wanted to be made the strongest possible, what slicer settings should be used? 3-5 shells vs all shells, no infill? 100% infill vs some other % infill? Thin layer height vs thick ...
1
vote
1answer
212 views

Bevel gears 3D model

Goal : create a pair of bevel gears for 90 degrees angle axles. Context : the gears are designed with an OpenSCAD library (https://www.thingiverse.com/thing:1604369, function 'pfeilkegelradpaar'), ...
1
vote
2answers
1k views

Using maximum width when slicing in Ultimaker Cura

I am trying to slice a model that is half a mm less than max width, but not successful. What am I missing? Is there some minimum value less than maximum allowed, or something? Edit: after changing ...
3
votes
1answer
420 views

Object's height not a multiple of layer height

This basic question has been bothering me for a while. Let's say I'm printing an object of height 20.1 mm with 0.2 mm layers. What will the slicer do? in other words, how will it print the last layer?...
18
votes
1answer
8k views

How does one use a heat tower?

I've been asking around on how to choose the right temperature for a given filament. I noticed that with two different brands of pla I have to print at different temperatures, and the manufacturer ...
6
votes
1answer
270 views

Do Cura's self-crossing infill patterns account for excess material from self-crossing?

As far as I can tell, Cura's infill patterns which are self-crossing, such as triangles, don't do anything special to account for extruding material over the ...
5
votes
2answers
713 views

How to avoid collisions with already printed objects?

When printing several objects, I recently encountered a problem that arises when the structure in itself is relatively thin or the support towers have a small surface: the printhead would in motion ...
3
votes
2answers
785 views

Inconsistent inner/outer dimensions

Using CuraEngine with my Ender 3, I'm getting what I'd call inconsistent inner and outer dimensions - for example, a nominally 3 mm peg is significantly larger than a 3 mm hole, and it takes ...
6
votes
1answer
1k views

How is E value calculated in Slic3r?

I want to know the math behind how Slic3r calculates E values. $E_{value}$ represents amount of filament in mm (unless volumetric extrusion is selected) that has to be fed into the hotend to obtain a ...
4
votes
1answer
762 views

Hemispherical Bowl : how is it possible?

I was reading up about how to extrusion print an overhang greater than 45 degrees, when something weird stuck me. I see lots and lots of 3D extrusion printed bowls that have perfectly printed ...
2
votes
1answer
46 views

Minimum material deposit threshold in slic3r

I've been using Slic3r for a while now, and for the most part am happy with the results it produces. I mostly use the standard profiles provided by Prusa for my i3 mk3. However, when watching the 3D ...
6
votes
2answers
930 views

Uniform squishy infill

I try to print a stamp with flexible filaments. The problem I encounter is that the filament is flexible, but not soft. This leads to small differences in height to parts of the stamp not working. ...
6
votes
4answers
3k views

Relation between layer height and bond strength

I've seen many references to a FDM print being weakest in the Z axis, due to poor bonding between layers compared to the extruded walls. Thinking about optimising this for a specific material (...
0
votes
1answer
444 views

Good profile for slicing ABS in Slic3r?

Does anyone know of a good slicer profile (i.e., an .ini file.) for Slic3r for printing ABS for a Prusa i3 MK3S printer?
5
votes
2answers
169 views

Which software do I need to start print something?

I'm still new to 3D printing and I want to print something. I expect that I'll mess it up since I find nothing to adjust it but it is now laying around for 4 months and I'm sick of it. So my question ...