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Tip For Better Plastic Injection Molding

A small, but very effective tip for easier plastic injection molding set up is to standardize the clamping slots on the top and bottom plates of all mold bases. This little trick might seem obvious, but it is surprising how many custom molders have every size imaginable in their mold base inventory.

With this method you need only one size clamp, which can be custom made or likely purchased. The set up techs won’t need to be fumbling about for the right size clamp, there will be no shims under clamps and you can be sure the molds are held in place securely.

This is also a good idea from the standpoint of training. There is enough to learn without adding another item to the list of how to set up a plastic injection mold. Once this is in place, it will quickly become a SOP, standard operating procedure.

All your future designs must have this incorporated, which, for some reason, is not as easy as it might seem. You likely will still have the occasional mold that comes in the wrong size, but in time they will all be standardized.

Learn more about plastic injection molding and injection mold making.

Plastic Injection Molding Bosses

Have you ever had an awesome boss while working in anything related to plastic injection molding? Since I have been in this business, which goes back to 1978, I have had quite a few good and some less than good bosses.

One excellent boss I had in a plastic injection molding company was from Switzerland and his name was Karl. Every day he was immaculately dressed and on top of everything that went on in every aspect of the company. It took me a long time to get hired and I knew I was in for a real experience, but I wanted to learn my trade from the best.

The very first day I was standing with the foreman looking over some prints. There was no heat on because it was early spring, so the shop was pretty cool. I had my cold hands in my shop coat pockets when Karl spied me. He marched right over, yanked my hands out from my pockets, and proceeded to slap them, telling me to “never put your hands in your pockets!”

I should have known better, having lived in Northern Europe for a few years, but, hey, it was cold! In the end, we became good friends and I did learn a great deal of craftsmanship from this old schoolmaster.

One of the nicest I had was an elderly man who had the unfortunate bad habit of smoking and drinking coffe all the time. This was back before the days of no smoking in the shop, so his fingers were actually yellow from the smoke. What made him nice was that he was so patient with us apprentices, but what made him almost intolerable was his breath!

He used to come up to each of us every morning to greet us and give us an assignment or check on our work. That is when his kindness became his curse. Because he was only inches away from our face we just had to eventually breathe in his absolutely horrible stench of a breath! More than one guy actually gagged and nearly vomited!

Another boss I had was a Russian who grew up in the German part of Brazil.  He could speak so many languages and seemed to know a million people. He was great because he took the time to explain things without making any of us beginners feel like idiots.

What about you, do you have any stories of a good or bad boss in your plastic injection molding or mold making career?

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