Plastic Injection Molding

Bill details the key engineering principles underlying plastic injection molding. He describes its history and, then, reveals the intricate details of the process. He shows viewers where to found, on any injection-molding product, the markings created by injection molding. He closes with a description of the one of the finest examples of the injection molding: the Lego brick.
Overview video:
Mold manufacture:
Plastic bottle cap production:
Making Lego bricks:
99 Percent Invisible:

Пікірлер: 2 372

  • Jack Frost
    Jack Frost4 жыл бұрын

    I made plastic injection molds for 35 years, and that was the most precise description of the process that I could wish for. Great work!

  • Vatsu Ananab
    Vatsu Ananab2 жыл бұрын

    This guy is the David Attenborough of engineering!

  • Brian Hand
    Brian Hand3 жыл бұрын

    After spending over 25 years as an injection mould toolmaker I thought I knew just about all there was to know. This is an excellent educational video that I have benefitted from watching and learnt much more than I expected. Many thanks for posting this.

  • LawPickingLocksmith
    LawPickingLocksmith Жыл бұрын

    Thanks Bill for the explanation. In my apprenticeship we had injection molding machines, I used to feed the hopper. Back in the 70's the Italians were the "kings" of molders. We had a big tool shop that made so many molds.

  • frank miller
    frank miller2 жыл бұрын

    This is one of the best videos I've watched describing injection molding. Great job simplifying the process so most can understand it and opening the door to the more intricate side of mold making and processing.

  • Arjun Vallipuram
    Arjun Vallipuram2 жыл бұрын

    Something about these videos is just so therapeutic and relaxing, yet so rich with information

    FOAD RIGHTNOW7 жыл бұрын

    This guy is THE epitome educator! Clear, concise, and informative! Always a pleasure to watch his videos!

  • Orland Lamce
    Orland Lamce Жыл бұрын

    Well done Professor, from one engineer to another, I say bravo. Your educational work is top notch, inspiring, and consistent with the rearing nature of someone who cares for his fellow man. Bravo!

  • Slavko Stojanovic
    Slavko Stojanovic2 жыл бұрын

    Very good explained, just one correction regarding "Lego Molds". Actually those were standard Hot Runner molds but no more in use in Lego. They are now returned to improved sprue tecnology in energy saving manners. Improved sprue means that it is basicly a "Stack" Mold meaning that during opening midle plate is also detached and robot removes the sprue with comlete gates.

  • GraceGennaMia
    GraceGennaMia Жыл бұрын

    This is exactly what I needed. I was interested to learn more about how injection molding works, and this video could not have been more perfect! Thanks for this!

  • Razzle Dazzle
    Razzle Dazzle Жыл бұрын

    I am glad I stumbled upon this video BEFORE my chapter test on "Molds" in Solidworks. This video helped me understand and visualize the process soooo much better than it was ever explained to me in class! The lightbulb in my head has exploded and now I understand why I have to design with drafts and cavities on every single assignment. :-) Thank you!

  • Lauren Camila
    Lauren Camila

    I'm a mechanical engineer and I just discovered your channel with this video, I had so much fun watching it, the description so accurate, and it seems the only thing left for me to do now is to binge the rest of your content

  • jpaugh64
    jpaugh646 жыл бұрын

    As a kid, I studied the marks of injection molding on household objects without knowing how they were poured. Thanks for revealing the mystery.

  • John Hower
    John Hower2 жыл бұрын

    I designed injection molded parts for over 38 years. This video is on of the most thorough presentations of the molding process. This video with help new designers and engineers explain why it will take weeks to complete a mold due to strength of the pressures and the precision, and complexity of cooling the mold. Hats off!

  • Ronald Green
    Ronald Green3 жыл бұрын

    Beyond awesome, educational, intuitive learning video! Like my own mechanical, gearhead, brain, I can mentally see how things work. I've always loved step,by, step instruction books, and videos on how things work. Thank you!👍😀

  • Justin Manser
    Justin Manser

    My father designed moulds and manufactured them. He also had a production line with numerous machines, British built (Newbury) and had the distinction of being able to convert imperial measures to metric and vice versa in his head. This was because we moved to the U.S. in the 1980's.

  • Adventure

    As an industrial designer in college (someone who’s probably going to be making A LOT of plastic products) thank you for making such a comprehensive and understanding video :D

  • Arrian

    After spending 200 years making injection plastic I can say for sure this guy knows what he's talking about!

  • hmmm
    hmmm7 жыл бұрын

    WOW...the dedication on the quality and details of this video is just amazing! You guys are true heroes to those who love to learn!

  • M F
    M F

    Absolutely superb! This is one of the best explanatory videos I've ever watched. Bill is a wonderful teacher. Thank you Bill!