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Injection molding training courses don't mean practical experiences

I've met too many people who go through injection molding training courses (VERY expensive ones - limiting the attendees to larger companies) who have a diploma on the wall who can't explain the answers to simple questions such as (A) 'Why is the cooling time THAT long" - unacceptable answer: 'it makes goods parts' ,(B) "in plain language how do you duplicate the process in machine "A" when you put that mold in machine "B" that has a different size/capacity injection unit and clamp and not start from scratch?" (C) even better "How do you know that waterline hookup is (1) optimal for that injection mold and (2) identical to the last five times you ran it?" (D) And, the ultimate ship sinker "what is the ONE cause of short shots (or any other of the 18 routine molded part defects) that explains every solution you're going to try to correct this defect?"

These questions should be easy. But most graduates from the injection molding training courses I've seen, who've been declared "Trained and Certified" can't answer those questions.

Taking a training course and getting a certification does not guarantee that the person have the necessary skills or have understood what the questions were. They need to have practical experience on being on the injection molding production floor for months and years to be effective.

Well I do have a diploma, and I have lack of practical experience until I was working and I spent at least a good 5-6 hours on the production floor everyday observing the processes, taking notes and asking questions.

Implementing Blue Books is a great tool to help that quest to standardize and document tooling performance as it moves along different injection molding machines and maintenances. Installation diagrams (water, air, cores, manifold, etc...) are extremely useful (very simple but I have been at many companies where this vital info was not documented or not shared with end user which is the jey user. As any great tool someone has to administrate this tool and take action (as SPC charts), if a tool ran better on machine A than B, why was it. Has the cycle gradually increased, how has the scrap level performed, etc.

These documentations are a part of knowledge management where you have a record of previous experience and can use these experiences for application for new tools. A record of cycle time for a product and to check if the cycle time for new production can reduce the scrap material further.

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