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Questions tagged [slicing]

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

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5
votes
3answers
101 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, ...
1
vote
1answer
32 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 ...
2
votes
0answers
43 views

Slicer is adding additional floor bed

I'm trying to print an architectural model of a house with 2 floors and a room on the roof. It was designed in SketchUp by a friend. I removed inner walls and floors to print it upside down to get ...
2
votes
2answers
68 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
votes
1answer
45 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 ...
3
votes
1answer
57 views

Ultimaker Cura is adding redundant top/bottom layers

I'm trying to print a supporting base which will house the spindle for an electrostatic rotor. It's basically just a truncated cone with a hole down it's center to house the spindle. For reasons that ...
1
vote
1answer
80 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
103 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 ...
6
votes
2answers
210 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 ...
2
votes
1answer
33 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 ...
3
votes
1answer
118 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?...
6
votes
1answer
36 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 ...
3
votes
2answers
84 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 ...
3
votes
1answer
118 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 ...
1
vote
1answer
38 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 ...
5
votes
2answers
309 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. ...
0
votes
1answer
89 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?
4
votes
2answers
132 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
1answer
114 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 ...
1
vote
0answers
33 views

Slic3r - how to combine specific perl code with Slic3r SupportMaterial.pm? [closed]

I've got a specific perl support tree script that I would like to integrate into Slic3r. Does anyone know how to do that?
5
votes
1answer
44 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 ...
3
votes
1answer
193 views

Ultimaker Cura 3.6 choosing to fill in narrow walls with diagonal striping

I'm playing with printing some Lego-like bricks. I'm using brick models where the wall thicknesses are aligned to match an exact multiple of my printer nozzle (.4 mm nozzle = 1.2 mm brick ...
1
vote
2answers
37 views

Cause of slicing artifacts layers not connecting diagonal errors

Sometimes my meshes turn out with artifacts Which can be seen in the bottom image. What is the cause? The first image shows my mesh which its generated from. I've tried multiple slicers. This tends to ...
1
vote
1answer
309 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'...
1
vote
0answers
44 views

Reproducing entire slicing configurations in Slic3r

3D printing is often an iterative process and I frequently find myself wanting to re-slice an STL I've already printed, but with just one setting tweaked. The problem is, unless I have left Slic3r ...
3
votes
2answers
102 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 ...
3
votes
2answers
510 views

Slic3r top layer issues, small gaps, weird extruder paths

When slicing with Slic3r Prusa edition the top layer of most models turns out pretty bad. There are usually small gaps or weird patterns. This does not happen with Ultimaker Cura, it will have a nice ...
5
votes
2answers
370 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
466 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
173 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
142 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
259 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
380 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
579 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
583 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 ...
11
votes
1answer
1k 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
229 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
781 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 ...
4
votes
1answer
203 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
512 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
2answers
179 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
2k 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 ...
5
votes
1answer
1k 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
4answers
8k 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
180 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
289 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
4answers
1k 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 (...
13
votes
3answers
8k 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 ...
4
votes
2answers
9k views

How to center my prints on the build platform? (Re-calibrate homing offset)

When I print large prints close to (but not exceeding) 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, while ...
3
votes
2answers
682 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 ...