Hello all, NextEngine sometimes has difficulty with small lithics or metals due to the way they reflect light. It's a laser scanner so these things happen. All the recommendations above should help, but in the end if it doesn't or if you run into an institution that won't allow you to use sprays or powders I would recommend photogrammetry and white light solutions. Particularly if you are collecting samples from other institutions it will reduce the amount of specialized equipment you have to carry around. If you go this route there is a firm based in SF that provides starter kits (I think not including the software but everything else) for free. Good luck!
Best, Ari <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Garanti sans virus. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> On Sat, Nov 11, 2017 at 5:14 PM, Terrie Simmons-Ehrhardt < terrielsimm...@gmail.com> wrote: > 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. > -- 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. 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