Just How Accurate are Mcor models?
Over the last few months I have often wrote about the merits of paper as a material for 3D printing as many people are utterly surprised by the strength and resistance of paper http://www.eurekamagazine.co.uk/design-engineering-blogs/guest-blog-it-is-paper-jim-but-not-as-we-know-it/146878/.
But one of the other important features of a 3D printer is the ability of a machine to print accurate parts. The dimensional accuracy of a component part represents the degree of conformity between the manufactured dimension and its designed specification. We were recently contacted by a Croatian student who has conducted some research on the accuracy of our paper parts to the original STL model. And the results are awesome!
The main objective of this research was to determine the deviations and evaluate the dimensional accuracy of 3D printed camera casing models (see image below) compared to the original models in the STL format. The study sample consisted of the 3D printed camera casing models and the same models in the STL format. The models were 3D printed on Mcor IRIS and then scanned with an ATOS 3D scanner. A comparison between the scanned and original STL models was made in the GOM Inspect software. The results indicate that the maximum deviation occurred on the scanned front camera cover and it is 0.82 mm in the direction z. The average deviation of scanned front camera cover is 0.0845 mm and the average deviation of scanned back camera cover is 0.0722 mm. The analysis of the results proves that the 3D printed paper‐based parts have dimensions very close to the original CAD models.
In fact, the results obtained in this research confirmed that the paper‐based model has satisfactory accuracy, with the average deviation within only tenths of millimetres. Such low deviations confirm the accuracy of the Mcor IRIS!
Selected long shell models enable special observation of accuracy in Z direction. It was thought that the Z direction in long thin models might be more affected by cutting force, humidity, gluing and post‐processing. However, 3D scanning results did not reveal significant concave nor convex deviations in Z direction, thus confirming that layering of glued papers really does successfully withstand the 3D printing process and delivers sufficient rigidity.
In addition, because two camera parts were printed for this research the student was able to test mating and relative insertion of parts and it turns out the results verify the accurate assembling capabilities of our technology, particularly of value to design engineers.
So there you go more reasons not to underestimate our paper based 3D printing technology – it is low cost, strong, has more colours than the rest and it’s accurate!