Grid Alignment Print Aid

This section will include any new tips and tutorials related to the Solus.
drewbacca
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Posts: 57
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Location: Dubai, UAE

Grid Alignment Print Aid

Postby drewbacca » Thu Feb 23, 2017 12:10 pm

Hello y'all,

If you print two identical parts on the same platform that turn out to have different actual values, it is probably due to your calibration. I have learned a few tricks over the span of 6 months and I would like to share my experiences.

Whether you are using the +10 close up lens or the +4/+1 both have barrel distortion that will make the parts along the extremities larger than intended. A good diagram is actually from sprintray.us that make the moonray
distortion.png


Following the videos from wistia in the calibration only the overall length was measured while distortion was not taken into account. I created a simple set of grids to aid in the calibration and setup of your Solus. If you do manage to print the grid in color, the red cross hair will be visible while the black would block light. Try putting the grid upside down for a cool way of visualizing the distortion

20170223_153521.jpg
20170223_153540.jpg


Link to AI files & jpegs:
https://drive.google.com/file/d/0B2uI3Q ... sp=sharing
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rkundla
Solus Master
Posts: 301
Joined: Sat Jan 09, 2016 6:01 am

Re: Grid Alignment Print Aid

Postby rkundla » Thu Feb 23, 2017 6:03 pm

drewbacca wrote:Whether you are using the +10 close up lens or the +4/+1 both have barrel distortion that will make the parts along the extremities larger than intended. A good diagram is actually from sprintray.us that make the moonray
distortion.png


That is a pretty exaggerated example from the Moonray folks because optics with that much barrel distortion are useless for any application unless you intentionally want a fisheye type look. Do you see that much distortion on your uncorrected grid?
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mongerdesigns
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Re: Grid Alignment Print Aid

Postby mongerdesigns » Thu Feb 23, 2017 7:35 pm

Yes, also the distortion for dlp projectors is not centered like that. More towards the top, because they project from the top area of the lens instead of the center.
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exedebee
Solus Expert
Posts: 128
Joined: Fri Feb 12, 2016 3:39 am

Re: Grid Alignment Print Aid

Postby exedebee » Thu Feb 23, 2017 11:34 pm

Thanks for sharing
drewbacca
Novice
Posts: 57
Joined: Mon Aug 15, 2016 8:18 am
Location: Dubai, UAE

Re: Grid Alignment Print Aid

Postby drewbacca » Sat Feb 25, 2017 11:22 am

scaling.png

This is what I got with no scaling and no adjustments.
haipham
Novice
Posts: 66
Joined: Fri Jan 01, 2016 1:39 pm

Re: Grid Alignment Print Aid

Postby haipham » Mon Apr 10, 2017 5:11 pm

i think need to mod projector for high accuracy, i calibrate many time but model alway distortion along xy and z axis, i think u should have better solution mark.

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