So now that we have the model, we were able to begin scanning it. At our university we have access to two different types of scanners which both have different properties.

  • Close range scanner – more suitable for getting all the details of the model in, however is more difficult to use for larger objects as you need to bring the scanner a lot closer to the model.
  • Long range scanner – more suitable for larger objects, especially ones that stretch out further than what the close range scanner can scan in one go. However struggles with scanning some of the model’s details.

After testing both scanners we decided the close range scanner was ideal for our model due to its size and how precise we wanted the detail around the bullets to be.


Scanning set up

 

We changed the set up for scanning the object a few times to find the best way of scanning the whole model in one go. This way we wouldn’t need to edit the model or pause and go back over the model if we’re able to get the scan correct in one go.

The first set up we did was putting the model on a grey stool which was low for us to go around it easily to cover all sides (as shown below):

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Fig 1: First set up idea of how we could scan around the whole object

We would then simply move around the object with the scanner whilst looking on the screen to make sure we got all sides. The big problem with this however was the cable of the scanner which was getting in the way of the model during scanning.

We then tried another method which was using a spinning chair as the base and moving the chair around while we scan:

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Fig 2: Final set up idea – while scanning we would rotate the chair to get all sides of the model.

This method was a lot more successful so long as the person spinning the chair was on the opposite side of the chair as then their hands would not be scanned during the process. When scanning we had one person turning the chair and the other person holding the scanner. When holding the scanner we had to make sure the bullets were scanned correctly and the curves of the model (specifically the ears) were scanned properly as well.

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Fig 3: Demonstration to how we scanned the model

Result of the scan

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Fig 4: Results of the scan where we started to edit the mesh

As you can see above the model came out looking messy. The bullets are hard to see in the image and there are lots of flying bits around the model. Plus the chair was also scanned in in to the software as well which we had to remove. The process would of took us a long time to do, however, we used a software called  Artec Studio 11 Professional which has an built-in system that allows us to automatically smooth out the model and remove anything we don’t want.

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Fig 5: Results of the scan in colour.

Final result

We had to wait for an hour for the software to finish smoothing the model and carry out any pre-export checks. This is the final result:

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Fig 6: Final result of our scan and smoothing the model

Overall we are very happy with the result, we were particularly happy with how the bullets came out as we were unsure when we first saw the scan (as shown in Fig 4) and we were worried we would need to start over. However, the model came out a lot better than we expected which meant we will be able to start printing (once we cut out the rest of the chair).


What next?

Now that the model has been scanned in and we are happy with the results, we are able to export the model and import it onto a 3D printing software and begin printing.

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