First layer height...not making sense ? September 01, 2010 08:46AM |
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Re: First layer height...not making sense ? September 01, 2010 11:22AM |
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Re: First layer height...not making sense ? September 01, 2010 12:42PM |
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Re: First layer height...not making sense ? September 01, 2010 07:48PM |
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Quote
nophead
My software looks at the z value of the first two layers and uses the difference as the layer height. It then starts with the nozzle that distance above the bed for the first layer
Re: First layer height...not making sense ? September 02, 2010 08:48AM |
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Re: First layer height...not making sense ? September 03, 2010 04:35AM |
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Re: First layer height...not making sense ? September 03, 2010 08:09AM |
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Re: First layer height...not making sense ? September 06, 2010 11:42AM |
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Quote
emt
Hi Uniquebot
What repstrap/reprap are you running?
I have just finished the axes on my Mendel.
When you home you get a slight bounce so you have to set the Z zero slightly above the bed so that you don't hit the bed with the nozzle when homing. I can adjust the Z home slightly on the spring to control the first layer thickness. I wonder if that is why the SF first layer is half normal layer to allow for the fact that the zero is likely to be above the bed.
Regards
Ian
Re: First layer height...not making sense ? September 06, 2010 12:02PM |
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Quote
rhmorrison
With a layer height set to 0.4mm SF prints the first layer at Z=0.4mm just as one would expect.
I then did the following:
I used an OpenSCAD model that had it's bottom at Z=0 and ran it through Skeinforge.
Then I moved the bottom to -0.2mm and created a new STL file that I ran through Skeinforge with the same results.
The first layer is always printed at layer height!
What version of Skeinforge are you using?
Re: First layer height...not making sense ? September 06, 2010 12:24PM |
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Re: First layer height...not making sense ? September 07, 2010 04:23AM |
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nophead
I have no idea, you would have to ask Enrique that. It is a useful side effect though as you don't have to place your models at zero.
Quote
nophead
You are still left with the problem that your Z=0 needs to be half the filament width above the bed though.