xy compensation - how does this work? October 19, 2016 04:31PM |
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Re: xy compensation - how does this work? October 19, 2016 11:56PM |
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Re: xy compensation - how does this work? October 20, 2016 05:22AM |
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Re: xy compensation - how does this work? October 20, 2016 07:34AM |
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Re: xy compensation - how does this work? October 20, 2016 07:58AM |
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Re: xy compensation - how does this work? October 20, 2016 09:03AM |
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Re: xy compensation - how does this work? October 20, 2016 10:47AM |
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Re: xy compensation - how does this work? October 20, 2016 02:42PM |
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Re: xy compensation - how does this work? October 20, 2016 07:41PM |
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Re: xy compensation - how does this work? October 21, 2016 02:45AM |
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Quote
DjDemonD
@DD - This is why I am a bit puzzled by it. The slic3r manual is entirely useless in describing this function and how it works. Absolute mm scaling for a part seems a very odd way to do this, if you want to compensate for a printer that prints out of scale as some deltas do, or for shrinkage in plastic (I'll come on to this in a minute), then its useless if I am printing an object 175mm long which comes out 173.5 to ask it for -1.5mm??? Surely this has to be relative scaling?
@dmould - I have read this in the research I did before posting this question and I can see the logic of your position but it does not match up to the experience I have had. All my printers when printing ABS produce a 40mm x 40mm object which once cooled and removed from the build plate is 39.7mm = 0.7% smaller than I asked for. Now I am willing to accept that they might all be mis-calibrated, but since two of them are deltas and one a corexy its not just having the wrong steps/mm, but all of them? Attempts to compensate using scaling of the object in slic3r are awkward as the scaling is in whole % points. I accept you can scale X to 106% then to 95% to get 100.7%, then do it all over again for Y, but this is very tedious for a build plate with 4 or more items on. If the xy compensation feature allowed setting 100.7% scaling in x and Y then it would be problem solved, and solved easily.
Re: xy compensation - how does this work? October 21, 2016 04:08AM |
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Re: xy compensation - how does this work? October 24, 2016 09:47AM |
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Sure, there is some shrinkage, but the shrinkage is from cooling from the bed temperature to ambient, not from molten to ambient which is what shrinkage tables for injection moulding will give. I don't understand what you are saying regarding Z height. If you don't change the Z height at the end of the print, are you saying that if you allow the print to cool on the bed, there is a 0.3mm gap between the nozzle ant the top of the print? If not, then it means that he Z axis only moved to 39.7mm, which is a calibration issue.Quote
DjDemonD
@dmould - I have read this in the research I did before posting this question and I can see the logic of your position but it does not match up to the experience I have had. All my printers when printing ABS produce a 40mm x 40mm object which once cooled and removed from the build plate is 39.7mm = 0.7% smaller than I asked for. Now I am willing to accept that they might all be mis-calibrated, but since two of them are deltas and one a corexy its not just having the wrong steps/mm, but all of them? Attempts to compensate using scaling of the object in slic3r are awkward as the scaling is in whole % points. I accept you can scale X to 106% then to 95% to get 100.7%, then do it all over again for Y, but this is very tedious for a build plate with 4 or more items on. If the xy compensation feature allowed setting 100.7% scaling in x and Y then it would be problem solved, and solved easily.
Re: xy compensation - how does this work? October 24, 2016 11:30AM |
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Re: xy compensation - how does this work? October 25, 2016 07:22AM |
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Quote
DjDemonD
I'd like to try the test with the z - height but I can't see how to keep the nozzle above the object without it oozing and being stuck to the object.
Re: xy compensation - how does this work? October 25, 2016 07:48AM |
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Re: xy compensation - how does this work? October 25, 2016 03:47PM |
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Re: xy compensation - how does this work? October 25, 2016 06:37PM |
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Re: xy compensation - how does this work? October 26, 2016 07:18AM |
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Re: xy compensation - how does this work? October 26, 2016 09:06AM |
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