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Questions tagged [slicing]

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

4
votes
2answers
164 views

How Do Tool Path Algorithms Decide Which Direction to Print a Closed-Loop Polygon

I understand how slicer programs create sets of closed-loop polygons to print on a layer-by-layer basis. For a given closed loop polygon which needs to be printed, the tool path generator will know ...
4
votes
4answers
255 views

Printing rectangular grid

I am trying to print an item with a rectangular grid (using PLA on Ultimaker 2+): Holes are 4x4 mm, distance between holes (wall thickness): 1mm. I am printing with 0.4 mm nozzle. Unfortunately, ...
3
votes
2answers
68 views

Internal wall does not print in horizontal print orientation

I have an object that has cutouts in it (alignment pins fit in the cutouts). The shape of the hole is a right triangle with the point clipped off to create a flat surface in the deep part of the hole. ...
0
votes
4answers
136 views

Need help to only print one small part

I'm in dire need to reprint a small chunk of a print that got messed up during print because the support for it broke which I cannot explain whatsoever. Anyway. I need to edit the STL file and I don'...
2
votes
1answer
56 views

How could I print a large sphere-like object?

I have a STL file with a rather large roughly-spherical object. I'd like to 3D print it to be fairly large, and hollow inside. Since the printer I'd be using has a max size of (18–20 cm)^3, I'd have ...
2
votes
2answers
82 views

What should the underside of a bridge look like?

I tried out printing a "bridge" for the first time using this Bridge Calibration model. The model creator suggests printing, tweaking settings, and printing again until it works "properly." My first ...
3
votes
1answer
66 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 PLA ...
3
votes
2answers
139 views

Help to reconcile nozzle diameter, deposited line width, and wall thickness in Cura

I need help resolving some conflicting logic between the nozzle width and shell thickness--parameters in Cura 16.021--and the physical deposited line width (width on x-y plane). DEFINITIONS For ...
7
votes
1answer
121 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 ...
2
votes
2answers
106 views

Hollow wing for rc plane

I am trying to print a wing for a rc plane with my 3D printer. In order to make the wing as light as possible I need to hollow it (and afterwards put some stable structure there). I've tried the ...
3
votes
1answer
192 views

Ultimaker Cura not always telling extruder to retract when traveling

I'm having a problem with Ultimaker Cura (v3.4.0) where it doesn't always tell the extruder to retract when performing a travel, which causes the hotend to leave a "trail" as it's moving and not start ...
3
votes
1answer
103 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 ...
5
votes
3answers
464 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 ...
3
votes
1answer
50 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 ...
8
votes
2answers
270 views

slic3r: Can I vary the infill percentage for different heights of my model?

How can I vary the infill percentage for different layer heights of my model? Context: The bottom part of my model needs about 20% infill. The geometry of the top part of the model (mostly cones of ...
3
votes
1answer
443 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 ...
5
votes
2answers
2k 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 ...
4
votes
2answers
101 views

How are infill paths connect to form an efficient path that respect the object's geometry?

I am attempting to write a basic slicer for some objects I am working with. I need to write a custom slicer as the objects are not polygonal based (they are implicit objects) and therefore cannot be ...
6
votes
1answer
116 views

Slicing problem - Slic3r prusa

I'm trying to slice this model: https://www.shapeways.com/product/VVNUVZ6JL/dread-warrior?optionId=66361748&li=user-profile I'm using a .4mm nozzle and .1mm layer height. When using slic3r some ...
5
votes
3answers
415 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 (...
8
votes
2answers
865 views

Different infill in the same part

I´ve have read an article to change different pattern depending on amount of layers, but my question is if is possible to have diferent infill in the same part?, for example: Base: has the infill of ...
4
votes
2answers
2k views

How to center my prints on the build platform?

When I print large prints close to the maximum dimensions of the heated build platform on my Anet A8, the brim or skirt or the print itself is printed outside the heated bed. Why is the print not ...
3
votes
2answers
242 views

Cura slicer, enforce Z move before layer change

I am slicing with Cura and Slic3r and one important thing that I recently took my attention is that cura positions head in start point of the new layer and then lifts the nozzle. That caused my few ...
2
votes
2answers
227 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
135 views

See G-code before exporting

When using Slic3r I noticed that Slice now and Export G-Code do different things. While ...
6
votes
1answer
81 views

Slic3r: How can I automatically modify the STL filename?

When generating STL files with slic3r I would like to automatically prefix the filename with strings such as PLA or PET before uploading to my printer. How can I specify this in the filament settings?...
6
votes
1answer
103 views

Easy way to refine a 3D-model for 3D printing by removing internal geometry

I have been given a proprietary 3D file of a real world item from an item manufacturer with the obligations not to hand it out to anyone to produce a print in a low single digit percentge scale of the ...
3
votes
3answers
890 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 ...
3
votes
1answer
333 views

Only generate supports between object and bed (for a brain model)

I would like to print a model of my brain (figure 1), it requires supports (figure 2). The supports also get generated between the brain folds/wrinkles of the brain by Slic3r. I only want the supports ...
5
votes
1answer
2k views

Adding extra Z-offset to bed for PETG in Slic3r

Having printed exclusively in PLA for the past year, I'm now looking at trying out PETG in order to print a set of spare parts for my new Prusa i3 mk3. I have bought a roll of PETG from Rigid.ink and ...
2
votes
2answers
220 views

How to determine real printing speed (tarantula/cura)?

Recently I noticed that cura always is giving me less printing time than the print itself takes on my tevo tarantula with Marvin firmware. The time difference is about 15%, at requested 50mm/s ...
5
votes
1answer
220 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 ...
5
votes
3answers
94 views

Over-hangs in prints

I would like to ask this in more of a general sense than anything, just for people to make note. I am printing out things for people and some files have some edges hanging out the side. I always ...
2
votes
1answer
274 views

Supports for dense Voronoi pieces

I have printed 1 voronoi piece before. I was able to get the supports that were inside the structure out with tweezers because the holes were big enough. This one (pic below) I do not think I can do ...
4
votes
2answers
2k views

Combing and Coasting

Here is my understanding of Coasting: Coasting stops extruding early in a move so that the string itself will finish the layer. Here is my understanding of Combing: Combing reduces the need to ...
4
votes
1answer
137 views

Using KISSlicer from command line on Linux?

Is there a way to use KISSlicer from the Linux command line? Or convert KISSlicer settings/profile to Slic3r/CuraEngine?
1
vote
2answers
147 views

Fusion 360 M3D Slicer

I have created a design with fusion 360. I tried to print it with my M3D Pro printer but it seems the designs have a flaw. If I try to print the bottom part, the second layer is wrong. It seems to ...
2
votes
1answer
147 views

How to increase the printing quality when using abs (slicer config)?

I have checked several different sites giving different configurations for the slicer. Let's say that the average extruder temperature is 230°C. I know that the complexity of the object matters a lot ...
4
votes
2answers
102 views

My print did not turn out as I expected. Where can I start troubleshooting?

I am trying to modify this thing. It's prints OK, but there are some design choices I don't like, so, since the previous makers uploaded their source files, I tried my hand at Sketchup. My latest ...
5
votes
2answers
370 views

Slicing adds holes/cracks to my object

I recently got started in 3D printing but here's an issue I can't seem to find a solution for (I don't know what exactly to look for). Here's what I did: I used InkScape to convert an emoji in to a ...
3
votes
2answers
120 views

Layer height issues creating partial top layer

Cura is slicing my object (a gear with text) with a partial top layer, and I believe it has to do with layer height and rounding issues. I have been able to solve this at specific heights 10-14mm ...
4
votes
1answer
178 views

commandline remeshing and simplifying tools

I'm currently trying to remesh and simplify some protein structure models (very large) to reduce the file size of the STLs I need to print from. The raw file before manipulation is ~4.9GB. I'm ...
3
votes
1answer
87 views

How do I convert point cloud data to DICOM?

How can I convert 3D point cloud data to DICOM format (specifying slice width) or an equally scrollable sharp 2D image format? Which software (preferably opensource or free) can I use to do this? I'...
1
vote
2answers
123 views

How is the print time of an object to be printed estimated?

I am curious about the algorithm/principles behind the estimates that the slicing softwares provide. Is there a standard technique behind this and how accurate is it ?
9
votes
1answer
1k views

How to print a two color part with only one extruder

I'm planning my first project. I want to print an iPhone case with a flush letter on the back, but I want the letter in a different color (single extruder printer). The thing is the two colors will be ...
4
votes
2answers
3k views

Why is the bottom of my part not smooth

I printed Planetary Gears and the top looks great but the bottom doesn't I am printing on a TronXY X3 (Prusa i3 metal frame clone) using eSun PLA+ and sliced using Cura 2.4. I print on glass and do ...
5
votes
2answers
472 views

How to slice this wing so it has a smooth infill like perimeters

I have this wing design that I want to print: You can notice that its walls have a thickness, which is 1.0 mm. I want to print it so that the perimeters are inside that thickness. Here is the ...
3
votes
1answer
1k views

Slic3r not interpreting STL correctly

I'm very new to 3D printing, I purchased a Monoprice Maker Select Plus last week and I'm just getting started with printing my own models. I can create fairly simple models in Sketchup without a ...
5
votes
2answers
390 views

Slic3r settings for flat slopes on top

I am having trouble printing a hollow object using Slic3r. On flat slopes on top, there are gaps that I cannot get fixed. The perimeters of successive layers just don't cover each other. Cura however ...
5
votes
1answer
234 views

Parts of my (apparently manifold) model aren't appearing in my Slic3r preview

I have an STL file that, when I load it in Slic3r, looks fine, but somewhere in the actual slicing process, something goes wrong and parts of the model disappear. That's the render on the left, and ...