Questions tagged [slicing]

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

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24
votes
5answers
38k 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 different infill in the same part? For example: Base: has the infill of ...
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 ...
13
votes
4answers
26k 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 ...
13
votes
4answers
6k 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 ...
13
votes
1answer
3k views

How to build CuraEngine?

I've been trying to build CuraEngine on Ubuntu following the Github instructions. The problem is that it lists some requirements: Clone the CuraEngine repository; Install Protobuf (see below); ...
12
votes
1answer
21k views

How to configure Cura to run the Z probe before heating

I'm using Cura as my slicing/printing software and I just started using the BuildTak printing surface. The BuildTak is damaged by pushing a hot nozzle into it and my printer's (Robo3D R1+) ...
10
votes
2answers
6k 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 ...
9
votes
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 ...
9
votes
1answer
1k views

Turning off heatbed for the last few layers. Good idea or not?

My heatbed won't let go off the prints until it considerably cools down. The cooling process takes decent amount of time. I was considering putting the M140 S0 (...
8
votes
1answer
2k 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 ...
8
votes
1answer
94 views

Cooling for big layers

There is an option in Slic3r to disable cooling for layers that take more than n seconds. What would be the disadvantages of having cooling on big layers ?
8
votes
3answers
3k views

Missing top layers in Cura

I've just tried to make some small labels with embossed lettering. Base is 1.5 mm, with letters and a perimeter protruding by another 1 mm. After printing, I realised that Cura is not giving me a top ...
8
votes
1answer
1k views

Skipping Y-steps, only when using Ultimaker Cura

In order to find out why my printer sometimes skips Y-steps (always in the same direction) only in Ultimaker Cura, I am digging into the G-code to understand the problem better. However, thousands of ...
7
votes
1answer
475 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 ...
7
votes
1answer
3k views

Extrusion adjustment

I recently started to use Simplify3D! It is great software, but I have a problem with adjustment of amount of plastic extruded. I have a slight under extrusion after I adjusted amount of plastic ...
7
votes
1answer
504 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?...
7
votes
3answers
3k views

What causes gaps in small region fills and how to prevent them?

I saw this cool Nuka-Cola bottle opener. I made it: As you can see, nasty gaps have appeared in the text. What could've caused them? I am sure I set the filament diameter correctly. So why did ...
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 (...
6
votes
2answers
2k views

Why are my prints so defective?

I received a Monoprice Maker Select v2 (I3 V2 clone) from my wife for Christmas. The sample .gcode files that came with the printer generally print great with no noticeable defects. However, when I ...
6
votes
2answers
14k 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 ...
6
votes
1answer
3k views

How to calculate the approximate volume of material used in 3d print?

Is there a reasonable way of approximating the volume of material used for 3D print by knowing only the STL file volume and infill percentage? Or what is the formula for calculating the exact volume ...
6
votes
2answers
787 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
3answers
149 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, ...
6
votes
3answers
3k 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 ...
6
votes
1answer
1k 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 ...
6
votes
4answers
6k views

Cura 2.4 missing “split object into parts”

I have an stl with multiple parts that I want to split up. Cura 15 had an option to "split object into parts" but I can't find that in cura 2.4. Did it get removed?
6
votes
3answers
264 views

Slicing software and Sidewall

I am new to FDM RP. I've done a lot of work on ZCorp and Connex. The question is can vectors curve drive an extrusion nozzle? Within a 3D volume I can generate curves that I want the print nozzle ...
6
votes
2answers
665 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 ...
6
votes
1answer
210 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
4answers
7k 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 ...
5
votes
3answers
705 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 ...
5
votes
4answers
1k 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, ...
5
votes
2answers
9k 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
772 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 ...
5
votes
4answers
1k views

Seamless prints?

Is there a way to make all your prints seamless?? I know there was this program that printed a vase constantly changing the z axis making it seamless. Why cant this be done with regular prints?
5
votes
2answers
1k views

How to post-process G-code to make prints faster using splines and arcs?

Recently (in 2017) there was a paper that got some publicity by researchers who are using a B spline algorithm to reduce vibrations in 3D printers. But before them, a B Spline implementation seems to ...
5
votes
2answers
604 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 ...
5
votes
2answers
838 views

Where to find z coordinate in G-code for delta printer

I´m currently writing my own firmware for a custom delta printer. Therefore I also need to read G-code from programs like Slic3r. Even with an small example like an cube I´m struggling to find out ...
5
votes
1answer
12k 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 ...
5
votes
3answers
151 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 ...
5
votes
2answers
159 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 ...
5
votes
2answers
836 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 ...
5
votes
1answer
932 views

How to line up (x,y) print area between hardware and software?

I'm trying to line up the physical print bed of my printer (Printrbot Simple Metal) to the virtual print area of the slicer (Cura). So far, they've never been properly aligned. It was never that big ...
5
votes
2answers
531 views

Printing objects with holes using M3D Printer

I am using an M3D printer and loaded an STL design with holes in the middle: However, the output is an object without holes (so I stopped the printing): What can be done to be able to print with ...
5
votes
2answers
116 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 ...
5
votes
2answers
560 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
1answer
223 views

Why are there so many print speed parameters in slicers?

The expert mode of Slic3r PE has almost a dozen speed values: I understand that ultimately print speed at a particular temperature correlates with bond strength, so things like bridges and the first ...
5
votes
1answer
350 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 ...
5
votes
1answer
290 views

Why do I have problems trying to get Slic3r to load a config file?

I decided to fire up my 3D Printer again after a while. I have new PCs, so I had to download Slic3r fresh, so I got the latest version (1.2.9). Then I went and found my old config file. It's really ...
5
votes
1answer
49 views

Slicer software capable of working with large filaments

I'm starting work on a very large 3d printer that uses very large filament. The idea is to house the entire thing in a shipping container and print things as large as cars. Filament will be some ...