Can you clarify a bit more? I'm actually still a newb when it comes to learning about 3d printing.
Discussion
Of course I can.
So when you print something with this kind of printer or fdm printers the object is build layerwise. Those layers are weak points. And there are plenty of them.
So you would want the layers of the nail to be vertical when you hammer them in a horizontal plane. Therefore print them flat. Long story short: 3d printed (not laser sintered in any kind) parts break easier between the layers. Even with carbon filled materials youxeont get the real strength of the fibers. They need to be really short to be printable but would need to somehow be "intervowen" between the layers to get that real strength advantage of the fibers.
Thank you.
Now, I understood all of that except for this
"They need to be really short to be printable but would need to somehow be 'intervowen' between the layers to get that real strength advantage of the fibers."
Can you elaborate a bit more on this statement?
Yes. Carbonfibers only unleashes the full potential when they are long enough. But in filaments they are short and do not build an "intervowen mesh". I am a bad painter but when you bend a part you would want the fibers to overlap each other fiber by around 50% to have enough fibers overlaying to resist the bending. Between layers it's the same. The fibers are so short, that the do not penetrate the next layery and the next layers fibers do not penetrate the underlying layer. The are just layed one on another and fused by the thermal adhesion of the nozzle.
One manufacturer does continuous fiber printing with a dedicated nozzle that extrudes one "endless" carbon line and embeds it in "normal" material. I forgot the name.
I mean the parts are lighter, and have a nice matte look. But printing it is not healthy due to the fibers. They literally fly around during printing and stay in your hands when working with it. That's why I do not print carbon fibers.