3D Printing Stack Exchange
3D Printing Stack Exchange

Questions tagged [dimensional-accuracy]

22 questions
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How important is the dimensional accuracy of filament relative to the detail of a print?

In this answer user Barafu says, Yet I manage to keep my tolerances +- 0.05 mm which is enough for everything but miniature printing. I have asked for clarification on that answer regarding what is meant by "miniature printing" but in the…
LegendaryDude
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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 crossing points multiple times. In theory this should produce either a blob around the…
R.. GitHub STOP HELPING ICE
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Print limitations with 0.4 mm nozzle

Is it possible to 3D print multiple 0.1 mm high layers with a 0.4 mm diameter nozzle in FDM while ensuring fidelity to the set layer height? The raster width is set at 0.4 mm and I am not touching that. The part thickness is 3 mm, so 30 layers of…
Beenum
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Print of fine hole seems to twist

My model is a keycap for mechanical keyboards. There is the cap itself, and a stem with a hole in the form of a cross, which fits the switches themselves. I print in the same position as it is intended to be used, top up. This means that the stem…
Gauthier
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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? Since I'm printing with 0.2 mm layers, my object…
JPFrancoia
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Need accurate 90º angle with respect to the table

I have a Tevo Flash. Normally, I don't care about perpendicularity with respect to the table. But now I have a 5" disc on a ball bearing, held by a 3D printed tube with a flat bottom. If the tube's axis is not 100 % perpendicular to the bottom, the…
MrSparkly
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Are Fusion 360 drawings sufficient to design and enforce tolerance in a hole of a solid?

I uploaded a 3D object for this project to Fusion 360 and printed it out straightforward: Yet its middle hole is too small for the stepper motor (Nema 17 Stepper-M) I am using so I wanted to increase its tolerance before reprinting it. So, I…
Revolucion for Monica
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Wouldn't a higher flowrate for 2nd outer wall increase the print quality?

I mostly print mechanical parts and thus need dimensional accuracy. When calibrating my printer I stumbled over the fact, that some people calibrate flowrate with single wall prints which would give you a good measurement for your new flowrate.…
constant-flow
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Raised lips on sharp vertical corners

I have an Ender 3 with a lot of mods. Of note, a cheap direct drive kit, linear rails for the Y axis, an upgraded "silent" mainboard and TH3D's firmware. But this issue goes back a long ways, yet I've not seen any really good examples of this…
GDorn
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What scale of accuracy in measurement tools is required to verify a FFF item's specs based on the technology properties?

Measurements in machining often are done to an accuracy of "thou" which is thousands of an inch, or about 0.0254 mm. The measurement equipment for such is usually to an accuracy of tens or hundreds of that. Construction is often done with an…
Trish
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Can Cura apply multiple Z-offsets across the bed to "flatten" the print area?

We have a Tronxy X5SA 400 Pro which uses a TR sensor to "auto-level" the printing bed. It samples 16 positions across the bed (4 x 4) and provides a +/- level from its initial measurement. For example, it might produce a grid like this: +0.280 …
KJ7LNW
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Under-extrusion halfway into print - Dremel 3D45 -PETG

NEW UPDATE BELOW I am having trouble finding the cause for this under-extrusion at start/end of each layer. Something changes halfway into the print creating a visible seam at some specific layer height. This also creates dimensional inaccuracy…
rosi97
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Low Accuracy while perfect travel movement

I own an older Anet A6. Flashed the Marlin Firmware on it (and think I configured it properly). Also updated to the latest 2.0.5.3 some days ago). The nozzle is a 0.4 mm one, direct drive extruder. When printing calibration cubes I used #define…
GWRon
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Ender 3 Y-Axis Stretched (I don't believe it's layer shifting)

I've got a peculiar issue today, and was looking for some help with it. Of the six Ender 3s I manage at my college, one of them seems to be stretching the Y axis of all the prints I make with it. Some points about the issue: It's variable, but is…
Finn
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What clearance should I leave between parts that are supposed to fit together perfectly when using a .6mm diameter nozzle?

Here's the thing that I'm working on putting together (the purple stud on the bottom right should be up higher like the one on the left). Notice how the purple studs fit into the red ring? Well, most of the parts are like that in one way or…
user875234
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