La sedia Universale 4867 progettata da Joe Colombo per @kartellemworldwide

#joecolombo #design #kartell Hi, today we're talking about a product created by Joe Colombo. It's a chair called the 4867 or Universale, made of ABS for Kartell. His designs attracted the strong interest of Giulio Castelli of Kartell, who decided to support his ideas with financial investment. In 1965, his Universale chair was one of the first to be molded in a single material: ABS, as I mentioned before. His designs are based primarily on the technology to be applied, and not the other way around. This detail immediately gives you an idea of ​​the caliber of the designer in question. The seat is injection-molded with plastic, a rapidly expanding technology at the time, as was the material itself. Joe Colombo designed every part of his designs, down to the most insignificant details. In this case, we have a seat composed primarily of three molds for the basic version: the upper part made from a single block, a single leg, and the feet underneath. Now let's analyze everything in detail. Each component is made by plastic injection, which means that molten plastic is injected into a steel mold. The plastic remains inside until it has completely solidified, after which we open the mold and remove our object, which will be a semi-finished product because it may have some defects on the edges. The mold is always on average 3% larger than the object because it must account for the elastic shrinkage of the material: this means that when it changes from a liquid to a solid state, it tends to shrink. We also need to take into account the draft angle and undercuts. I'll keep it short, and if you're interested in this topic, click above and you'll see the plastic injection molding video. In any case, we need to be able to easily remove our object from the mold, so some measures have been taken to make this possible. Returning to our chair, the upper part is a single piece and features details such as the central hole that allows for easy movement and, if desired, to drain water if we leave our chair outside. We can choose different colors simply by changing the plastic polymers inserted. Now, why did I mention an upper body, a single leg, and a foot underneath? Because plastic injection molds are incredibly expensive, costing hundreds of thousands of euros, and this demonstrates incredible foresight on the part of the designer and the company's technical department. If you look at Joe Colombo's sketches, you immediately notice that he envisioned this object as modular, with legs that could be disassembled. The leg detail is crucial because there was only one mold and it could simply be rotated for use in other positions of the seat, thus significantly saving on mold costs. Furthermore, we can replace the legs with others, creating different heights to create a children's seat or a stool. This way, we can produce more products while minimizing the number of molds used. We can also reuse the legs to create a coffee table, thus ensuring minimal expense and maximum yield. The seat is also stackable to minimize space, for example when we need to transport it, store it in a warehouse, or for a conference. Once it's over, we can stack everything and go. If you look at the seat from the front, you'll notice that it's cut cleanly on the sides, even from the sketch. But why? Here's the link to buy my SAM bottle opener. https://amzn.to/391MZzA Here's a few books I recommend: https://amzn.to/2JtTWRi Alessandro Guerriero. Untitled in the History of Design https://amzn.to/3pl7gqq Manual of the History of Design. Color edition https://amzn.to/2KBhILs WA. The Essence of Japanese Design https://amzn.to/38yESKE 1000 Chairs. Italian, Spanish, and Portuguese editions https://amzn.to/2M8M3Sl History of Design. Illustrated edition https://amzn.to/38BbbZc 1000 Lights. Italian, Spanish, and Portuguese editions https://amzn.to/2WFtU0n 20th-Century Italian Design https://amzn.to/2JgmwW2 Design. History and Counter-History https://amzn.to/3pdvanE 20th-Century Design https://amzn.to/3plUNm6 20th-Century Design. Italian, Spanish, and Portuguese editions Illustrated Subscribe to my channel here: https://    / stefanopasottidesignstudio   Visit my website: http://www.stefanopasotti.com Follow me on Facebook: https://www.facebook.com/stefanopasot... Follow me on Instagram:   / stefano.pasotti_designer   You can also find me on LinkedIn:   / stefano-pasotti-99860715