Alternate projection

mandreas · 2017-04-27 13:58:05

Hi Shahin

I propose an idea that, I believe has no patent in progress,(I'm waiting for denied)
we can call it "alternate projection", what it is:
The method is to alternately project a full slice, and before starting the peeling process, a shorter, and still configurable image with 100% dimming, better from transitions to the previous and the next layer.
I think it would improve overall quality, and would also strengthen support, and fine detail in general,

Shahin · 2017-04-27 15:31:57

Could you try make such plate manually and compare the result? (create two plates one with !00% dimming another one without. Export plates and mix layers from the two plate.

mandreas · 2017-04-27 16:50:15

Shahin wrote:

Could you try make such plate manually and compare the result? (create two plates one with !00% dimming another one without. Export plates and mix layers from the two plate.

The method should work as follows:

Layer n1 > full image exposure, (n.seconds), dimming image exposure, (n.seconds), peeling.
Layer n2 > full image exposure, (n.seconds), dimming image exposure, (n.seconds), peeling.
and so on

and not:

Layer n.1 > full image exposure, (n.seconds), peeling
Layer n.2 > dimming image exposure (n.seconds), peeling
Layer n.3 > full image exposure, (n.seconds), peeling
Layer n.4 > dimming image exposure (n.seconds), peeling
and so on.

Shahin · 2017-04-27 18:27:24

We support modulo operation on gcode box so. Lift for every other layer could be set as zero and no movement, so second method will works same as the first method. (RAMPS Only)

mandreas · 2017-04-27 19:01:24

Great ,

I should first correct the numbering of images, so they become sequential, right?
Then I would not know how to set the g code you are talking about, could you make a practical example?

1125lbs · 2017-04-27 22:43:35

Shahin wrote:

Could you try make such plate manually and compare the result? (create two plates one with !00% dimming another one without. Export plates and mix layers from the two plate.

On materialise Magics you could generate this kind of support

Shahin · 2017-04-29 17:08:49

G1 Z{0.100*([[LayerNumber]]%2)}
For every other layer move 0.100mm

nanoDLP

#1 2017-04-27 13:58:05

Alternate projection

#2 2017-04-27 15:31:57

Re: Alternate projection

#3 2017-04-27 16:50:15

Re: Alternate projection

#4 2017-04-27 18:27:24

Re: Alternate projection

#5 2017-04-27 19:01:24

Re: Alternate projection

#6 2017-04-27 22:43:35

Re: Alternate projection

#7 2017-04-29 17:08:49

Re: Alternate projection

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