Questions tagged [slicing]

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

3
votes
1answer
38 views

Slow down first layer above infill in Ultimaker Cura

In Ultimaker Cura, is there a setting to slow down just 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 a ...
3
votes
1answer
95 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
34 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
280 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
36 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
131 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
93 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
41 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
112 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
35 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
152 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
43 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
80 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
340 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
304 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
383 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
131 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
138 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
152 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
248 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
376 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
428 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
775 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
185 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
618 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
160 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
495 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
2answers
135 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
1k 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
937 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 ...
8
votes
3answers
6k 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
166 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
216 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
856 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 (...
10
votes
3answers
5k 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
6k 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
571 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
386 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
288 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
173 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
170 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
2k 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
773 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
4k 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
306 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
306 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
101 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
376 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 ...
5
votes
2answers
3k 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 ...