21–30 of 60 posts
Interlocking layers is an interesting idea, but I don't see how this is supposed to work. You can't use the nozzle to inject that much filament into a large cavity because it will cool and solidify right out of the nozzle. Anyone who has ever cleaned blobs of filament off of a nozzle after a print failure can tell you what happens when you try to pump hot filament into empty space. Filament cools below the melt tempe…
Interlocking layers is an interesting idea, but I don't see how this is supposed to work. You can't use the nozzle to inject that much filament into a large cavity because it will cool and solidify right out of the nozzle. Anyone who has ever cleaned blobs of filament off of a nozzle after a print failure can tell you what happens when you try to pump hot filament into empty space. Filament cools below the melt tempe…
Secondary epoxxy nuzzle?
https://www.printables.com/model/438863-supper-strong-layers...
https://www.printables.com/model/437584-qualitative-layer-ad...
https://web.archive.org/web/20251008223152/https://bcarvercr...
>What’s NOT yet working: the physical print So, nothing to show. Next.
Personally, I think it's an interesting experiment. If my prints break, it's at the layer lines. This work may be a stepping stone, an easy way to reinforce prints.
I've seen this technique a lot, but mostly as a post-processing technique where resin, fiber, or some other type of plastic is injected into the channels after printing is completed. It would be interesting to see this done during the normal printing process. I am a little skeptical on the technique though. FDM printed walls are known to not handle pressure well, especially during printing when its past its glass-tra…
But you can definitely get printers to dump a blob of filament out without worrying about cooling problems, if the extruder speed is high enough. I was debugging some issues in P2PP (a post processor for the Mosaic Palette. One problem was that the printer would extrude all the filament at the start of some travels instead of along the path.
Interlocking layers is an interesting idea, but I don't see how this is supposed to work. You can't use the nozzle to inject that much filament into a large cavity because it will cool and solidify right out of the nozzle. Anyone who has ever cleaned blobs of filament off of a nozzle after a print failure can tell you what happens when you try to pump hot filament into empty space. Filament cools below the melt tempe…
>What’s NOT yet working: the physical print So, nothing to show. Next.
It was done with manually-written gcode though.
I've seen this technique a lot, but mostly as a post-processing technique where resin, fiber, or some other type of plastic is injected into the channels after printing is completed. It would be interesting to see this done during the normal printing process. I am a little skeptical on the technique though. FDM printed walls are known to not handle pressure well, especially during printing when its past its glass-tra…
I think the way this works is with an internal structure, that houses the plastic and is expected to deform, printed first (so it cools), then outer walls with perhaps some air gaping for insulation, then injection into the inner structure at the lowest temp possible, then the next level starts. Would print slow but might be genuinely strong vs normal infill + many walls (weight for weight). Multi head printers like…
That said, maybe an acetone drip or something in a strength channel to try and bond it.
Actually what I do (and I think is pretty common) is just stopping the print from time to time and filling the outer infill channels with wood glue and sand. Sometimes wooden sticks.
Interlocking layers is an interesting idea, but I don't see how this is supposed to work. You can't use the nozzle to inject that much filament into a large cavity because it will cool and solidify right out of the nozzle. Anyone who has ever cleaned blobs of filament off of a nozzle after a print failure can tell you what happens when you try to pump hot filament into empty space. Filament cools below the melt tempe…
There's a YouTube video out there of someone doing this with a long (airbrush?) nozzle that is inserted into those empty spaces.
Interlocking layers is an interesting idea, but I don't see how this is supposed to work. You can't use the nozzle to inject that much filament into a large cavity because it will cool and solidify right out of the nozzle. Anyone who has ever cleaned blobs of filament off of a nozzle after a print failure can tell you what happens when you try to pump hot filament into empty space. Filament cools below the melt tempe…
> Anyone who has ever cleaned blobs of filament off of a nozzle after a print failure can tell you what happens when you try to pump hot filament into empty space. Filament cools below the melt temperature quickly, especially when it comes into contact with your print.
That's completely irrelevant because this isn't printing into empty space at all. This is injecting molten plastic into confined channels, with no active cooling, made from material that doesn't conduct heat well. You're saying that the plastic will cool too quickly, but I believe the opposite will be true.
The problem that the author is describing is that the plastic is actually far too hot when injected and causes wall collapse. This is because the author isn't taking into account that FDM walls don't handle the required pressure near/above glass-transition points.
The failure mode you're describing is the complete opposite. If you were correct, it would result in cold plugs or extruder jams. It wouldn't result in wall collapse or layer delamination.