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Show HN: 3D print Z reinforcement via injected loops

mgunlogson.github.io

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Re: Show HN: 3D print Z reinforcement via injected loops

#13

Do you have a photos of objects you build with this? A video?

No, unfortunately. I've printed a ton of objects but nothing clean enough to be interesting. The top of cells always melt as I'm using the same material for injection and the rest of the print. Someone with a dual nozzle printer could try something like PLA injection in a polycarbonate part. I added support but don't have a printer capable of that. It's also possible that different print settings would work. I'm rele…

I’m surprised you bothered writing software instead of writing some G code by hand for testing

Re: Show HN: 3D print Z reinforcement via injected loops

#16
post #5

Instead of one large channel throughout the whole print, why not multiple small 2-4 layer bridges?

I had the same thought -- with a checkerboard pattern of 1:1:2 "brick" voids where each brick would be surrounded by bricks of a differing offset, one could conceivably calibrate the injection step and the print might have less propensity to cleave along xy planes. But, given the complexity of that calibration (and need for a high-flow head) I'd rather use the brick infill available today.

Re: Show HN: 3D print Z reinforcement via injected loops

#18

Earlier quoted context omitted.

No, unfortunately. I've printed a ton of objects but nothing clean enough to be interesting. The top of cells always melt as I'm using the same material for injection and the rest of the print. Someone with a dual nozzle printer could try something like PLA injection in a polycarbonate part. I added support but don't have a printer capable of that. It's also possible that different print settings would work. I'm rele…

I’m surprised you bothered writing software instead of writing some G code by hand for testing

when you have claude everything looks like a software problem :)

Re: Show HN: 3D print Z reinforcement via injected loops

#19
post #6

Why do you think this is better than the old practice of filling straight holes a few layers deep?

Is that available in any of the standard slicers?

I think that's called z-pinning, and it might not be because of patents. I'm not sure though.
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