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Bumblefuck / 25mm-olfa-blade-holder-knife

3D print your own AvE plastic blade holder in brutalist metalshop modern
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Locked together #3

Open kschoenberger08 opened 1 month ago

kschoenberger08 commented 1 month ago

All pieces are locked together, since it is one STL file. The orientation of them is odd and I can't flip them all so they are all flat on the build plate...

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Pyr-000 commented 1 month ago

If you happen to be using PrusaSlicer or any of the other Slic3r-based slicers you can right-click an object and separate the bodies. This looks like Cura, though, which apparently needs a plugin to be able to do this.

Zip of the split bodies re-exported: 25 mm olfa blade holder knife split.zip

kschoenberger08 commented 1 month ago

If you happen to be using PrusaSlicer or any of the other Slic3r-based slicers you can right-click an object and separate the bodies. This looks like Cura, though, which apparently needs a plugin to be able to do this.

Zip of the split bodies re-exported: 25 mm olfa blade holder knife split.zip

Nice. I didn't know you could do this. I wasn't able to open the zip, but was able to download a plugin to split them!

h-dub commented 1 month ago

the angled build is solving an important safety issue: if it is printed flat, the blade can put force at the weak spot between two layer lines. Could result in catastrophic failure if the print delaminated while someone was pressing hard. with the angled print this is less of an issue as multiple layers would have to shear for a catastrophic failure.

I printed it flipped 180 from the way you show with tree supports

1organoleptic commented 1 month ago

I printed it flipped 180 from the way you show with tree supports

Tree supports definitely look like the way to go for this.

Bumblefuck commented 1 month ago

Thanks! I'd post the fusion file for re-spin but there's too much secret stuff in the file header. OBJ files are over 25MB so Github won't let me post. It's a whole fuck around.

Bumblefuck commented 1 month ago

This is the orientation I print in to mitigate the hassle of support stuck in the slot.

Leopere commented 1 month ago

Thanks! I'd post the fusion file for re-spin but there's too much secret stuff in the file header. OBJ files are over 25MB so Github won't let me post. It's a whole fuck around.

Dunno if you can enable LFS (large file support) might help but like if its easier at some point I can submit a PR to split up the components I just feel like the channel for the actual blad isn't quite wide enough and I keep snapping my little testies bits that lock the slide in place when trying to move it around I tried printing PLA+ black from Elegoo at .15 layer hight on a .4 nozzle via the prusa mk3s+

sypernova6969 commented 1 month ago

@Bumblefuck have you tried to print it with the "bottom" on the bed? I.E. standing up? I mean that narrow part where you insert the blade into? I know it`s not ideal, but it would make is so that no supports are needed..
Also. are you ok??? that last video was. Cryptic as fuck. Let us know if we can help... in case help is needed.

Leopere commented 1 month ago

I actually was able to get it to print nicely on the flat end with organic supports but the channel for the blade was a touch too tight to let it freely slide so now I just kind of have a plastic thing with a blade jammed in it. 3d printing is awesome but man it can kinda stink de-kink-ifying things.

Leopere commented 1 month ago

image I'm just gonna leave this here.

rjorgenson commented 1 month ago

It's at least possible to print in the same orientation as Leopere with no supports and no brim. Gotta have good adhesion and i'm not sure it would work on a bed slinger but I was able print this on an x1c with no issues. 0.6mm Nozzle, 0.18mm layer height, PLA-CF, all default settings other than forcing no brim.

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Leopere commented 4 weeks ago

@rjorgenson do you find the blade slides okay? I feel like I get a bit of elephant foot on the peggy thing that's supposed to slide on that back there which seems to cause some stickage.

rjorgenson commented 4 weeks ago

@Leopere Yeah I haven't had any issues with fitment of the blade, there's no detectable elephants foot on my print. The only fitment issue i had was the backing pin behind the blade rubbing against the back of the body, seems to be because of the textured plate I printed on it's much smoother after messing around with it for an evening. The tolerances do seem very tight on this, my guess is the model designed for CNC wasn't changed much for the 3d print version. You could try setting your flow to like .98 or something and see if that solves the elephants foot and the clearance in the blade channel. The other thing that could be causing fitment issues of the blade is the blade thickness itself. I have olfa 406605 blades (https://olfa.com/products/25mm_hbb_black_snap_blades?variant=40584946057399) other blades might be slightly thicker causing friction even if your flow is accurate to the model.

IMG_7970

darrendignam commented 3 weeks ago

https://drive.google.com/file/d/1UQBe-5EL0sFED54YIUa5jSlx4GH-HlBG/view?usp=sharing

File for bambu labs. Slice: 6 walls, 100% infill, no supports. Blade groove is clear. PArts need a bit of finishing to get assembled.