3D Printing Stack Exchange
3D Printing Stack Exchange

Questions tagged [print-strength]

Questions related to the mechanical strength of a print, e.g. material strength, or finished part strengths

29 questions
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Designing clips that won't break

As my first project, I'm trying to design a holder for glass vials, for a scientific application. The photo below shows the latest design iteration, and also shows the problem with it: As you can see, one of the clips that's meant to hold the vial…
N. Virgo
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Does the layer thickness have any effect of the strength of the 3D printed object?

Is a 100 micron layer thickness object stronger than 300 micron layer thickness 3D printed object? Are there any rules to follow? Filament type - PLA
Jash Jacob
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What is a good way to estimate the impact on material strength different printing methods will have?

I'm going to 3D print a part that needs to meet certain strength requirements, due to its usages. I know how strong a particular plastic (eg. comrpessive/tensile/shear strength) is when dealt with in a solid chunk, but not when it is 3D printed.…
GiantCowFilms
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How to determine shell thickness for parts?

Let's say you're printing a container or some other object with no infill. What's a good rule of thumb for how thick to make the outside? I'm looking for something along the lines of millimeters thick per square inch of area. I'm thinking about PLA…
Joel Coehoorn
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FDM layer bonding strength

I'm looking for some advice, rules of thumb, or models for how to design parts for layer bonding strength. As an example part, lets assume a circular beam in bending (tall cylinder). Depending on how the part is setup on the build platform (tube…
Diesel
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Improving durability of a printed propeller

I am currently working through various different iterations ofccreating a propeller for a model ICE (nitro engine). So far I have managed to disintegrate each of them eventually. I have been experimenting mostly with PLA and PETG so far. I am…
Yanick Salzmann
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How to calculate the strength of a printed object?

If I'm working with standard PLA, and I want to print a box that I can stand on without any risk of it breaking, is there any good way to calculate the appropriate print settings? I know that structural strength comes from the infill. Knowing this,…
Mason Wheeler
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How do you assure that you print layers that bond correctly?

I'm fairly new to 3D printing but I'm getting the steam up and I chug out pieces without much hassle. One thing though is that I have the impression that sometimes, parts are easily broken, and I suspect bad adhesion between layers. I'm printing…
Valmond
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Typical plastic strength at 1500 RPM

I'm planning to print a certain sample holder which is going to be placed on a CD-Rom BLDC motor and spun at about 1000-1500 RPM. The holder would essentially be a 2-3 mm thick 100 mm square platform with 1-2 mm thick hooks rising up from outer…
Osta
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What should I think about if I want to design something modular?

For a while now, I have been thinking about designing things such as small bedside tables, game/dvd/bluray racks for 3d printing. I've always thought that making them modular would be a good way to go about doing this as well. Modular design would…
Jake Millington
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DIY tensile strength testing

I want to tackle an experiment with the following goal: Determine the correlations between printing parameters (temperatures, speeds, humidity, perimeters, infill, etc.) and tensile strength using a specific 3D printer, test specimen, and…
typo
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What is the best infill pattern for shearing strength?

For practicality sake, I need to print a design such that there will be weight hanging parellel to the layer lines. Is there an infill pattern that would be better than others at handling this? I realize that all kinds of infill will still have the…
linuxdan
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Which material "creeps" (plastic deformation) the least (or nothing at all) under pressure after being printed?

I would like to build a standing shelf where the supports which hold each successive plank are 3D printed (to obtain special shapes). However, I read that PLA flows under constant stress/pressure. Still, this doesn't stop the author of the article…
FarO
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Does the color of a filament effect its physical properties?

When choosing which filament to use for a particular print does the color of the filament have any impact on it's performance, or is it purely a cosmetic choice? For example, are there any side-by-side comparisons available that demonstrate that…
Aaargh Zombies
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Best material for compression?

I'm designing a mount for a cylindrical speaker to attach to my bicycle. It will mount on the bottle cages. I've printed a few iterations with various infill settings (using PLA) and the weak point is always the bolts holding the entire mount to the…
BrainFungus
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