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.
Terrie Simmons-Ehrhardt On Sat, Nov 11, 2017 at 11:49 AM, Dave Norris <dsnor...@gmail.com> wrote: > Mary-Margaret > > 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. > Cheers > > Dave Norris > > Sent from my iPhone > > On Nov 11, 2017, at 11:28 AM, Mary-Margaret Murphy <nearbei....@gmail.com> > wrote: > > 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. > > Best, > > Mary-Margaret > > > On Sat, Nov 11, 2017, 9:10 AM terrielsimmons <terrielsimm...@gmail.com> > wrote: > >> 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: >>> >>> Hello, >>> >>> 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. >>> >>> Thanks, >>> >>> Callie Diduck >>> Master's Candidate >>> Department of Archaeology and Anthropology >>> University of Saskatchwan >>> >>> -- >> MORPHMET may be accessed via its webpage at http://www.morphometrics.org >> --- >> You received this message because you are subscribed to the Google Groups >> "MORPHMET" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to morphmet+unsubscr...@morphometrics.org. >> > -- > MORPHMET may be accessed via its webpage at http://www.morphometrics.org > --- > You received this message because you are subscribed to the Google Groups > "MORPHMET" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to morphmet+unsubscr...@morphometrics.org. > > -- MORPHMET may be accessed via its webpage at http://www.morphometrics.org --- You received this message because you are subscribed to the Google Groups "MORPHMET" group. To unsubscribe from this group and stop receiving emails from it, send an email to morphmet+unsubscr...@morphometrics.org.
