

http://sheetcam.com/Scanything/index
https://www.youtube.com/watch?v=9Wlb6wgCgbY
http://sheetcam.com/Scanything/downloads
Very cool
Scanything is not FREE but the license is not astronomical either, It works QUITE well. I have been using it for a while the Camera I have is a Supereyes B005 and it works perfectly and is about $27 shipped on Amazon.
I was told by Matt at Burntables when I was shopping around the tracer tech was not a scanner but works more like a coordinate measuring machine... though the video appears to depict it as a "Scanner"
with Scanything I can scan anything that will fit on my table, I have done several items for clients that way as well. Lighting and reflectivity is important for it to pick up the edge. I used in a former job OGP Optical measuring machines and this edge finds in a similar fashion. if the lighting or reflection of the material is different it will not find the edge correctly but I have taken Shiny painted items layed them on a fresh sheet of steel.
Drawn around them with a pencil and scanned the pencil line with zero issue. Just make sure your focus is good to go, and it works with Tom's Ethercut like new money, but if you are using a USB jog box you may have a conflict with THAT. Tom's RS485 jog box would not be an issue.
Here is a video of scanning a cocacola logo right off a 12 pack box.
https://www.youtube.com/watch?v=ufJ20zdSzjE
Resultant .DXF
Now the missing cutout in the loop is my fault not the software you DO have to take it to the Edges that you want to trace. I skipped that because I was just playing and I left out the second O as well In CAD I went back and copied the interior of the first O and inserted it in the second O just because....
And the resulting routed design in a scrap of Plywood.