"The Human Heart is made of Flesh" 2018, Egypt. (3d printed sculpture for outdoor permanent display)

3d printed sculpture designed for outdoor permanent exhibition for indefinite period.  Location:  Egyptian Desert.  Temperature:  high


Observation of this new material - 3d printing with filaments - for a permanent outdoor display 

As we know PLA could stay outdoor for 2 years or more (no other published data from users) in Europe.  There has been a 4 meter high sculpture printed with normal infill printed as an outdoor sculpture.   And one in Amsterdam as a statue.  (more research to be done)

To know the exact temperature/conditions inside the glass volume we need to use a thermometer.

The upper part is in PET. White lace plate is in PLA. 
As it is an outdoor installation, with a glass enclosure and bottom lighting, it gets very hot inside. 

We could see after one day in the sunlight, the PLA started to warp a little, it demonstrates buckling and gives a flying aspect to the disk. 

The glass covered volume turns into a "solar slow cooking device".
It is very interesting and we will observe how much warping will continue, and would be very good to have results over one years time. 
  How will the "Human Heart is made of Flesh" survive 4 seasons ?  What behaviors will we see?

We already know the traditional materials, metal and stone; glass has been historically tested to with stand sun rays.  However with wood, it is much more delicate.  And with stone, over time, there will be wind etching too.  Soft wood will not last.  Soft stone will be etched by the wind if left outside unprotected.  What kind of new materials we could use to last longer than the traditional ones?  Carbon fiber?  maybe.  :)

Here, I am looking at my first 3d sculpture living in the desert.

I am looking forwards to seeing photos of this Heart over a years time.

Stay tuned!

thermometer -10 to 110

https://www.permabond.com/materials_bonded/4508/
Bonding PET material

All Permabond cyanoacrylate adhesives bond PET when Permabond POP primer is used first.  Permabond 105 and 2050 provide the highest strength.  Cyanoacrylates are often desired due to the fast set times, however, they provide poor resistance to polar solvents.  They do provide good resistance to non-polar solvents.

The temperature resistance of both the TA4610 and cyanoacrylates exceed the temperature resistance of PET.

UV curable adhesives and two-part epoxies such as ET515 or modified epoxy such as MT3809 bond PET that has been flame, corona, or plasma treated.

Tips for surface preparation and bonding:

For untreated PET there are several options.

1.  Bond as received with Permabond TA4605 or TA4610
2. Prime with Permabond POP and use a cyanoacrylate adhesive.  Note that POP only increases adhesive when using a cyanoacrylate, therefore it won’t increase adhesion of other adhesive types.
3. Flame, corona or plasma treat the PET surface.  After treatment, most adhesives types will provide some adhesion.

Properties of PET

• Surface energy: 44mJ/m²
• Maximum service temperature: 70°C - means dont put boiling water into pet bottles, no above 70°C in contact w material
• Melting temperature: 250°C

PET Uses

• Packaging, plastic bottles
• Woven materials such as sailcloth
• Disposable medical devices
• Films and wraps
  
  To determine the best specific adhesive to bond PET in your application, please provide some detail to our technical team and our adhesive advisors will get back to you with a recommendation.

One of the Curators:  Marion Fromlet

At Night, the robot inside the heart throws off green light, incandescent.

109 Artists, "Revival of Humanity Monument", Sharm-el- Sheik  2018