Non planar layers
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@calvinx what company?
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Cant remember, i will try to find the article again, i read it last night on one of the 3d printing blogs.
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and how different is this than a hexapod with 5 axis?
sounds like someone is trying to patent the ESC key again
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@calvinx said in Non planar layers:
There is a possible issue of this already having being patented by another company which might stop it being used freely............
Are you sure this will stop us for non commercial use?
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@fma I had the same idea, and a question: how about building a DIY 3D printer with patented technology and then printing and selling 3D printed parts in a shop. Is this allowed?
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Good question ; I don't know...
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@calvinx broken link?
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No, the link works fine...
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@peirof works for me
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I am not a lawyer, but I looked into the patend and saw it was abandoned in 2015, and there is an article https://smallbusiness.chron.com/patents-abandoned-65186.html explaining when a patent was abandoned, it can be used. A commecial produced product between abondent and new status active needs not to pay fees.
But as I said, I have little patent knowledge. -
@joergs5
good info but strange that the patent was only applied for in 2015 by auto desk.further investigation is required I think.
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But AFAIK, a patent only prevents commercial use of something; I don't think it forbids someone to develop free sofware for personal use...
But I don't know if it is a problem for a university. It could also be a problem if Prusa Research implements something patented in their Slic3r fork...
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I don't know the status of the Autodesk patent, but there is at least some prior art in 3D printing:
Some other prior art to the March 2015 Autodesk patent, specifically 3D printing:
April 2013 - https://www.thingiverse.com/thing:75735
July 2016 - Hackaday article https://hackaday.com/2016/07/27/3d-printering-non-planar-layer-fdm/
Nov 2014 - Comment in Hackaday article https://hackaday.com/2016/07/27/3d-printering-non-planar-layer-fdm/#comment-3105340 leads to https://github.com/nick-parker/Bread first commit in github was Nov 2014.Ian
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Note that 2 of these links are not the same technic: they just distort a part, and can't slice a non planar part...
I plan to give a try to Bread.
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An additional option and innovation to non planar printing: a nozzle which can rotate in all three axes so that the edges of the nozzle do not disturb the non-planar printing and the nozzle can be closer to the layer. Nozzle direction and hereby filament flowout of the nozzle is freely controllable.
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@joergs5 Nozzle only needs to tilt in two axes (doesn't need to rotate), and it can be the bed that tilts, rather than the nozzle. Moving the nozzle in more than 3 axes (though think milling bit) is common in CNC milling machines, and more recently water jet and laser cutting.
Ian
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@droftarts well, yes, I thought of the possibility of concrete printing where the direction of the nozzle is important (and a nozzle where a Kevlar wire precedes the print). And I thought of printing walls and later the infill with a flexible nozzle also.
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@joergs5 said in Non planar layers:
Before someone protects it by a patent, an additional option and innovation to non planar printing:
The nozzle can be swivelled in all three axes so that the edges of the nozzle do not disturb the printing during non-planar printing and the nozzle can be closer to the layer. The controller controls the tilt of the nozzle. Nozzle direction and hereby filament flowout of the nozzle is freely controllable.
Don´t get on the high horse, this type of 5 axis printing is already patented.
By the way, you cannot patent a possibility or "can be", you can only patent the execution of that idea. More simply. it´s not WHAT is done, it´s HOW it´s done that´s patentable.
Simple example: you cannot patent the process of boiling water, but you can patent HOW the water is boiled, for example you invented a water boiler that does this by using fusion energy. you would have to describe in detail how the fusion energy ends up in the water, and THEN you can patent it.
