3D Scanning for Injection Molded Parts

No question - I would use the CGI system to capture 'geometry inside'. See http://www.cgiinspection.com/ for details.

Because you have electrical componentry inside i would suggest against MRI, the other possibilities I know of are X-ray, CT-scan (effectively the same thing) and ultrasonic. I believe that CT-scans are what was used at uni to look inside metallic objects, this is probably your best bet, however I am unsure of the resolution that these machines can achieve, you may be looking for something that is too small to see on CT. At work here we use X-ray alot, but it's probably not suitable for intricate geometry.

According to me Laser CMM is the suitable for inspection of injection molded parts. You can even use profile projector also to measure the internal feature of the part but CMM will give you accurate result and it also gives you the 3D model of the part.

when you say best, I think you want to see this video from Jay Leno.

If you say cheapest, you can set up your own 3D scanner for 150$. here (very simple and cool system)

Chris

Ooooohhhh, affordable 3D scanning!!!

Looks like I can blow most of the 3 day weekend researching/tinkering/pondering this one for potential personal gain.

Thanks!!

Hooker

What is your part geometry and tolerances?

My experience with scanners is they can't get to the bottom of deep bores and such. The best scanners have something like a 7 deg reflect angle.

Again, the better scanners, ($$$) have an advertised accuracy is in the +/-.0005" range.

3D computer tomography (CT) is getting more and more affordable and accurate. There are several manufactures out there. (IMTEC/3M & Werth come to mind) Besides the benefit of non destructive inspection, 3D tomography is just so cool! More tools more better~

I was in the process of buying the "EXAscan" before I left my previous job. For portability, versatility and accuracy this product is amazing. Here is a link.

http://www.creaform3d.com/en/default.aspx