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3D Scanning and Printing
3D Scanning and Printing
Surface Dirt and dust was removed using dry cleaning methods such as soft brushes and a museum vacuum on low suction with a net guard covering the nozzle.
This was followed by wet cleaning the surface of the pediment with Tri-Ammonium Citrate 2% in distilled water as it was the most affective in removing the engrained dirt and did not affect the state of the oil gilding. Acetone was used to treat the water gilding.
Surface Dirt and dust was removed using dry cleaning methods such as soft brushes and a museum vacuum on low suction with a net guard covering the nozzle.
This was followed by wet cleaning the surface of the pediment with Tri-Ammonium Citrate 2% in distilled water as it was the most affective in removing the engrained dirt and did not affect the state of the oil gilding. Acetone was used to treat the water gilding.
Once the gesso had dried it was then sanded down to make it smooth, level and matched the original appearance of the corner
3D Material Replacements
The 3D printed materials that were investigated for their surface quality and structural integrity were:
- Acrylonitrile Butadiene Styrene (ABS)
- Polylactic Acid (PLA)
- Acrylonitrile Styrene Acylate (ASA)
- Clear Resin
These four materials were analysed for any surface imperfections which might disrupt the surface presentation and quality of the their final casts. This included noting any air bubbles, scratches, print lines in the set material.
PLA (Ornate corner piece) done on Makerbot Z18
ASA (Floral Curl) done on Stratasys F370
ABS (Blooming Flower) done on Dimensions SST768
It is clear to see that these materials have completely different surface states compared to the traditional materials.
The PLA has captured the original well, however there are contour lines left behind by the printer as it was building up the sample. However, PLA does appear to have a smoother surface quality than that of the ASA (which has contour lines visible too) and the ABS (which had captured the original poorly).
Resin had surprising results in that it had captured the original mould perfectly, with no contour lines, air bubbles or cracking to be seen.
Clear Resin (Mirrored Blooming Flower) done on Formlabs Form2
The structural integrity of the four materials was determined on a Tensile Strength Testing Machine. The results indicated that the 3D printed materials were more flexible than the traditional materials, and instead of breaking under the pressure of the weight, they bent with it, causing none of them to disintegrate structurally.
PLA (Ornate corner piece) post gilding
Each material was covered in several layers of bole to smooth their surfaces, however it was found that resin only needed one layer due to its already flat appearance.
The 3D materials gilded very well, however it was still clear that even through the layers of bole surface imperfections could still be seen such as the contour lines on the ASA, PLA and ABS. However, no such imperfections could be seen on the Resin, which appeared to be just as good as the compo traditional material.
ASA (Floral Curl) post gilding
ABS (Blooming Flower) post gilding
Clear Resin (Mirrored Blooming Flower) post gilding
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