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Questions tagged [print-strength]

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

4
votes
1answer
113 views

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 ...
8
votes
3answers
120 views

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 ...
6
votes
3answers
96 views

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 ...
3
votes
3answers
4k views

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 ...
3
votes
2answers
150 views

Snap-in clamp geometry

I apologize if this is in the wrong section, but it seems relevant. I am an absolute noob at 3D printing, but recently my need for a specific, small part intersected with access to a 3D printer at ...
5
votes
1answer
393 views

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 ...
2
votes
3answers
191 views

Is it safe to print a rotor insert for a centrifuge using a makerbot?

Laboratory centrifuges have buckets that hold the sample tubes in inserts. The buckets are the black things on the rotor in the upper left corner holding the bottles. Examples of inserts are shown ...
2
votes
1answer
109 views

What slicer settings would produce the strongest part?

If a part is wanted to be made the strongest possible, what slicer settings should be used? 3-5 shells vs all shells, no infill? 100% infill vs some other % infill? Thin layer height vs thick ...
6
votes
1answer
424 views

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 ...
6
votes
2answers
210 views

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 ...
8
votes
1answer
5k views

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
26
votes
7answers
2k views

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,...
10
votes
2answers
106 views

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 ...