When I started planning out my final piece, one of the first things I had to decide on was which material I wanted to use. My aim was to create a conceptual piece of work that is able to raise awareness and possibly influence change about the consumption of plastic. My plan was to do this by printing text onto plastic material and then vacuum forming the sheets, to create a gripping 3D piece of work. I was however aware that my piece has more to do with conceptual art than it is a visually pleasing piece of artwork.
After speaking to the 3D workshop about my idea I was sent off to do some research on plastic materials so that I could figure out which would be the most suitable for my project. As I wanted to vacuum form my pieces, I was advised that I need to find an appropriate type of plastic to do this, so that it won’t release any harmful chemicals or toxins.
- Polypropylene – chemically resistant, very good quality and exceptionally high definition when vacuum forming, white sheet will turn clear
- Polyethylene – most common thermoplastic in everyday use, reasonable quality, and fair definition when vacuum forming
- Polystyrene – second most common TP in everyday use, good quality, and high definition when vacuum forming, easiest & fastest (due to low thermoforming temp) and most forgiving vacuum forming materials
- Cast acrylic – more colours are available because of its production technique, has a broad thermoforming heat band that’s mostly elastic, when vacuum forming only gentle contours with large radii are possible because of its small plastic window
I decided to choose High Impact Polystyrene sheets from Technology Supplies because these were the only sheets I found that aren’t brand new and are instead ‘reprocessed’. They are recycled vacuum forming sheets that are affordable and form effortlessly.
Unfortunately, I was limited to the size because of the vacuum former we have at the university. This only allowed me to form a sheet that was roughly 30cm x 45cm. As this project was mainly set so that we could consider site-specific work more and contemplate and assess the planning, budgeting, and transportation of materials it didn’t matter too much about the realistic scale of the work. If I were to create a similar conceptual piece that was raising awareness about an issue then I would complete it on a much larger scale.
I was hoping I could vacuum form these plastic sheets over plastic bottles or other unused plastics that were going to waste. At first, I was told this would work but once I had screen printed my sheets and was ready to form them, there was another staff in the 3D workshop who said this wasn’t possible. I wouldn’t be able to vacuum form my sheets over any loose pieces of plastic, as the sheets would simply grip to them and become stuck. I was left with no other choice but to use large plastic sheets that other students had disregarded, which I could use to vacuum form over instead. This made my overall piece turn out completely different than I had imagined because I was expecting each sheet to expand by at least 30cm, making it a larger mould that has been sculpted and built upon and looks very much 3D. The plastic sheets that I was using instead, were large but the forming and cuts of the sheets weren’t very deep and therefore my sheet that I had moulded was still extremely flat. This is a shame, as my piece didn’t turn out as initially hoped but I still tried to make the most out of photographing the text that was printed onto the constructed sheet as if it were larger.