Hi Mary-Margaret and Dave,
I've had success with the provided powder on chunks of quartz, but in
general, the NextEngine does not detect dark objects well, so I can see how
it would have a hard time with obsidian.
On Sat, Nov 11, 2017 at 11:49 AM, Dave Norris <dsnor...@gmail.com> wrote:
> Could you recommend a foot spray? I’ve been trying a quartz point with no
> success and was think of using painters tape but if you’ve had success with
> spray - I’d like to maybe give that a shot.
> Dave Norris
> Sent from my iPhone
> On Nov 11, 2017, at 11:28 AM, Mary-Margaret Murphy <nearbei....@gmail.com>
> Good morning, Callie and Terrie.
> I agree with your settings suggestions, Terrie.
> Also, the supplied powder with the NextEngine is (or at least with mine,
> was) pretty basic and inadequate. I ran experiments with titanium dioxide,
> bentonite power, foot powder spray, and chemical whiting. My sample
> included 2 obsidian flakes. The easiest was the foot spray.
> As far as a reference object, i recommend something with plane geometry, a
> matte surface and a coloration near to your objects. Something along the
> line of a die (dice), a Lego brick, or a small 3D print sample.
> Meshlab software is helpful, as is CloudCompare. You should check them out.
> On Sat, Nov 11, 2017, 9:10 AM terrielsimmons <terrielsimm...@gmail.com>
>> Hi Callie,
>> Are you using the old NextEngine or the Ultra? Since you are scanning at
>> a small distance, make sure your scan setting is set to macro. Try fewer
>> divisions, around 8--too many divisions for small objects causes the
>> auto-alignment to not work. The NextEngine also has a hard time aligning
>> flat objects, so if the scans don't align within ScanStudio, you might have
>> to export them to Meshlab and align them. You can email me directly if you
>> want some help with Meshlab.
>> Terrie Simmons-Ehrhardt
>> On Friday, November 10, 2017 at 6:25:14 PM UTC-5, Callie Diduck wrote:
>>> I am working with a NextEngine Laser scanner trying to create 3D models
>>> of Avonlea Projectile Points for my Masters Thesis. I am having difficulty
>>> with the scanner not being about to stitch the individual scans together to
>>> create a 3D model. I think I've tried just about everything I can think of
>>> to make it work but I still come up short.
>>> I am wondering if the problem is that the projectile points I am working
>>> with are just too small for the scanner to handle? The points range from 14
>>> to 23mm, and about 2-3mm thick.
>>> I have been able to scan points that are larger about 26 to 35mm in
>>> length, 6mm at their widest point and get a successful 3D model out of it.
>>> Does anyone have any suggestions?
>>> The settings I am using right now are a 360 scan, 14-16 divisions, 3.3
>>> thousand points per inch, neutral for colour, and a distance from the
>>> scanner of about 9.5 inches. I am covering the scanner completely with a
>>> card board box to ensure there is no change in light.
>>> Any help or suggestions would be great. I have been trying to make this
>>> work for the past 2 months.
>>> Callie Diduck
>>> Master's Candidate
>>> Department of Archaeology and Anthropology
>>> University of Saskatchwan
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