Slicing with multiple nozzle sizes, feedback loops, and nested motion systems June 17, 2015 03:59AM |
Registered: 8 years ago Posts: 7 |
Re: Slicing with multiple nozzle sizes June 17, 2015 04:11AM |
Registered: 8 years ago Posts: 7 |
Re: Slicing with multiple nozzle sizes June 17, 2015 05:17AM |
Registered: 10 years ago Posts: 14,672 |
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johntron
3. Fixing my delta to the inside of something like a steel beer keg to increase rigidity - it's floppin all over! Maybe I'll just nail it to the wall.
Re: Slicing with multiple nozzle sizes, feedback loops, and nested motion systems June 17, 2015 05:21AM |
Registered: 8 years ago Posts: 5,232 |
Re: Slicing with multiple nozzle sizes, feedback loops, and nested motion systems June 17, 2015 02:00PM |
Registered: 8 years ago Posts: 396 |
Re: Slicing with multiple nozzle sizes, feedback loops, and nested motion systems June 17, 2015 03:01PM |
Registered: 8 years ago Posts: 7 |
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o_lampe
You´d need to have a slicer with multi-layerheight option
Any idea where I could find some post processing algorithms to get some ideas from?Quote
o_lampe
A selfmade postprocessing algorithm
I never said one part, just armchair engineering here.Quote
o_lampe
All that for just printing one part
Re: Slicing with multiple nozzle sizes, feedback loops, and nested motion systems June 17, 2015 03:02PM |
Registered: 8 years ago Posts: 7 |
Re: Slicing with multiple nozzle sizes June 17, 2015 03:03PM |
Registered: 8 years ago Posts: 7 |
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dc42
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johntron
3. Fixing my delta to the inside of something like a steel beer keg to increase rigidity - it's floppin all over! Maybe I'll just nail it to the wall.
A combination of 2020 vertical extrusions, a mix of 2020 and 2060 horizontal extrusions, and metal corners works very well for me. See [miscsolutions.wordpress.com]. I think the metal corners make a lot of difference.
Re: Slicing with multiple nozzle sizes, feedback loops, and nested motion systems June 17, 2015 04:32PM |
Registered: 11 years ago Posts: 335 |
Re: Slicing with multiple nozzle sizes June 17, 2015 04:51PM |
Registered: 11 years ago Posts: 335 |
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johntron
1. Auto-calibration or even motion using feedback from integrated measurement equipment like laser collimators.
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johntron
2. Large scale motion with integrated high-precision motion system - big slides or delta arms with a print head that can position itself within its reference frame by a few millimeters to correct for deflection at larger scales.
Re: Slicing with multiple nozzle sizes June 17, 2015 10:03PM |
Registered: 8 years ago Posts: 7 |
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691175002
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johntron
1. Auto-calibration or even motion using feedback from integrated measurement equipment like laser collimators.
This exists for extremely precise applications but we are talking nanometers here.
Quote
johntron
2. Large scale motion with integrated high-precision motion system - big slides or delta arms with a print head that can position itself within its reference frame by a few millimeters to correct for deflection at larger scales.
This is a bad idea because your ability to measure with low latency is dependent on having some rigid frame of reference. If your frame is not rigid, you cannot measure your error fast enough to correct it. If the frame is rigid, there is no need for a second positioning stage.
You are trying to solve a problem that does not exist. The repeatability and accuracy requirements of 3d printing are a joke compared to many other (low-cost) applications.
People have trouble because they cut every corner possible. There is no point adding closed feedback to a machine made from zip ties and laser cut plywood.
Building the frame properly is easier, cheaper, and more robust than trying to calibrate a piece of shit with sensors and feedback loops.