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Nicholas Seward
961 followers -
I am a nerd and a computer science teacher. You say redundant. I say a lot of a good thing.
I am a nerd and a computer science teacher. You say redundant. I say a lot of a good thing.

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Cubic Subdivision Infill is now in Cura2.4. (The glitch from the beta was fixed.)

For many models I tried, 75% infill with Cubic Subdivision Infill has the same weight as 30% with plain Cubic Infill. Put another way, you can print parts with near full density close to the shell and not use any more plastic. The plastic in the center of your part adds very little strength. Testing on 15mm x 15mm beams showed that Cubic Subdivision Infill was about 20% stronger than Cubic Infill of the same weight.

Try it out and let me know how you like it.

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One of my students just made this sweet 1-arm SCARA prototype. I have been meaning to try this geometry for a very long time. It checks out and will easily support 3D printing.

We are accepting suggestions for the Z. I really like the idea of a backpack printer that can print huge 300mm+ objects. That said...how can we add a Z and still keep it cute and foldable as it is now? I would be okay with a smaller Z such as 75mm or 100mm.

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One of my students just made this sweet 1-arm SCARA prototype. I have been meaning to try this geometry for a very long time. It checks out and will easily support 3D printing.

We are accepting suggestions for the Z. I really like the idea of a backpack printer that can print huge 300mm+ objects. That said...how can we add a Z and still keep it cute and foldable as it is now? I would be okay with a smaller Z such as 75mm or 100mm.

Post has shared content
One of my students just made this sweet 1-arm SCARA prototype. I have been meaning to try this geometry for a very long time. It checks out and will easily support 3D printing.

We are accepting suggestions for the Z. I really like the idea of a backpack printer that can print huge 300mm+ objects. That said...how can we add a Z and still keep it cute and foldable as it is now? I would be okay with a smaller Z such as 75mm or 100mm.

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One of my students just made this sweet 1-arm SCARA prototype. I have been meaning to try this geometry for a very long time. It checks out and will easily support 3D printing.

We are accepting suggestions for the Z. I really like the idea of a backpack printer that can print huge 300mm+ objects. That said...how can we add a Z and still keep it cute and foldable as it is now? I would be okay with a smaller Z such as 75mm or 100mm.

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My (high school) student (Martin Boerwinkle) designed and implemented Cubic Subdivision Infill which is a brand new feature in Cura. I really think it will become (at least should) the standard infill in the future.

For those that don't know...it is the same as cubic infill but groups of 8 internal cubes are (recursively) combined into larger cubes if none of them intersect the shell. This throws away a lot of useless internal plastic but also keeps the density high close to the shell where you need it.

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Amazing progress!

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I had this idea but couldn't find a video of someone doing it. I then made a motion study to see if it would work and then promptly found 3 videos of real machines. I hope you guys/gals enjoy it anyways. I think this would be one of the most sane ways to approach a 6DOF printer.

https://youtu.be/T2L704bDMBQ
https://youtu.be/egrS4-Muivc
https://youtu.be/FltBh-g35ZQ

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I had this idea but couldn't find a video of someone doing it. I then made a motion study to see if it would work and then promptly found 3 videos of real machines. I hope you guys/gals enjoy it anyways. I think this would be one of the most sane ways to approach a 6DOF printer.

https://youtu.be/T2L704bDMBQ
https://youtu.be/egrS4-Muivc
https://youtu.be/FltBh-g35ZQ

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