tensile strength of 3d printed Disc

I'm building a 3d printed motor and wondered if anyone knew what filament is strongest, PLA or PETG? What one and rotate that fastest before breaking. I've done a google search but cannot find any information on this.

Thanks in advance.

Wullie.

I suspect the tensile strength of the filament will be the last thing to give way. The most likely issue you will face is delamination of the layers created during printing.

Careful design of the layer structure would help, e.g. if all the print layers were radial - but I don't know any way to get a slicer to do that. You may need to hand craft the code.

I have successfully made pulleys in PLA, but they were for low speed (<200 rpm ) use.

***THIS*** video, made by Clough42 is an interesting test of various 3D printing filaments where, surprisingly, PLA proved to be the strongest. As suggested already, delamination is probably the commonest weakness which I usually try to overcome by design, where I try to divide the item in such a way that the parts can be assembled with the laminations unaligned and glued with superglue or epoxy.

Any heat may be your biggest enemy depending on the filament type ? Noel.

In my experience, bigger nozzle, thicker walls and increased layer height gives very strop prints.

I've had very strong prints (brackets mainly) using 0.8mm nozzle, 0.5 layer height and 4.8mm walls.

You can further improve the strength with cubic infill, little point going over 40% in my experience.

Good luck.

Jimb

Hello

If it's layer adhesion you want then try ASA. I have used it quite a bit and i like it. The layer adhesion is the best i have seen just above ABS or try HIPS (airfix plastic type). If you wanted to stick with PLA type then ESUN PLA+ is good and tough.

regards

Steve

regards

Steve