This should be fairly straight forward to implement as a slicer modifier, similar to Cura's "Make overhang printable". Maybe you could even do thinner layers specifically for these adjusted bridges, similar to how support can print in thicker layers. I guess the modifier would be something like "reduce horisontal overhangs with bridges".

Thanks for this video, I've come back to it a handful of times every time I need a reminder on the order of operations and just wanted to leave a thank you note!

Using bridging to avoid supports. Brilliant! Thank you for sharing!

cool stuff! thanks for sharing! found your video because Zack Freedman mentioned it in his latest video (or rather he mentioned that Kennetek implemented your idea and he linked to your video on his gridfinity openscad github repository)

This is great. Thanks. Can't wait to give it a try.

What a AWESOME hack! Would love to see this as a feature in Cura that you can activate if the bottom of the hole you are making is not a critical dimension. Thanks alot! :)

Excellent. I did a slight modification of using lines so that there is no cut on the outer wall, but concept identical. For larger holes, one might need additional steps to allow the arcs to be printed.

I love this video. Very clear explanations and examples. Even *I* can do this, now.

Great tip! Thx for posting.

Thanks for that, really helpful

Great tip, I was curious so I tried it with an LCD resin print and it worked fine (at least with 4.5 mm holes). I've found overhangs are hit and miss on resin printing. Nice to know if I publish my part it should print well regardless of whether FDM or resin printing is used.

Thanks for this, giving this a go right now. One thing to note is that I had to change my Top/Bottom Line Directions to [0, 90] in Cura for the layer lines to bridge correctly. Otherwise they wanted to bridge at 45º to the square holes. Edit: Worked like a charm, thanks again.

This is great. I have a situation like this inside of a a thing where water should flow and neither supports or sacrificial layer is a good solution. Have used this to good effect. But step two is to make it work with a chamfered bottom edge. Chamfer is important for water flow.

super useful! thank you

legend mate. thanks !

Clever trick. I was hoping it would be a trick to print vertical holes, but cool all the same.

If this technique doesn't have a name, then I'd call it an autobridge.

great video! PRUSA designs their parts on the XL (in 2023!!) and others with a square step inside but not with the 2 step. It eliminates most of the issue but not perfect. Yours is cleaner but leaves the head with a bit more air under it?... Really nice! Thanks.

I was wondering why the prusa printer parts had weird screw holes. This explains it.

set opacity to

Useful for nut holes! But sadly it makes my already slow and complicated designs even more complicated and slow! Still awesome tho

Support haters unite! Very clever, thanks for sharing.

...or you could just make one layer that is solid, then take a drill bit and clean the hole up, would take a lot less time than all that extra modelling work in Fusion...

@TrasteIAm

4 жыл бұрын

Depends on how it will be used. Modeling it once for printing once, you might be right. Modeling it once to print it 2000 times, saves a lot of drilling time.

@gu4xinim

4 жыл бұрын

you can have those features as a separate positive object to be removed from whenever you need it, so you just model it once per type hole. He also shows places that are hard to get and this can be generalized for different geometries of overhangs. This is actually something pretty cool.

We just call it knock out holes.

How do you not end up with zero thickness geometry if you cut like this?

I know this is an old thread, did you ever create a solution for vertical holes? That never print round lol.

@technocube2940

5 ай бұрын

You can turn the top of the hole into a ^ shape so the overhang is at a reasonable angle. Your hole will then look like a water droplet. If you want the end result to be a perfect circle this obviously doesn’t work but it can be useful in many cases.

What's the weird beeping?

FWIW, here is another article from six years ago on basically the same thing: hydraraptor.blogspot.com/2014/03/buried-nuts-and-hanging-holes.html

Sounds like a slicer feature would be needed. Terrible to model this

@Maniacallabs

4 ай бұрын

It's really not that bad. Slicer support would be cool but difficult. A Fusion plugin would be easier.

Wow, seriously?. All that just to avoid a support you can get rid of in seconds. You must really really hate supports!