How To Evaluate And Choose An Injection Molder
The question of how to choose an injection molder comes up regularly and,
like many things, has many different answers. We will take a look at some of the common experiences in
choosing an injection moulder and hopefully several will fit your needs.
Basic criteria to choose a molder
What is the part design and how complicated is it. You can always get a
simple part made very cheaply in China or another Asian country, but complex parts are quite another
What is your delivery schedule? The price advantage of Asia can be very
alluring, and often works out quite well. Consider though, the back and forth that can occur with
engineering changes, mistakes, and even the initial tooling and production time frame.
What are the dimensional tolerances of the plastic part? If you are needing
high cavitation of very precise parts, your options are far fewer, though still more than enough to find a
qualified molder. There is a huge difference between .0005 and .0002 in an injection mold.
Reputation is worth gold. In today's marketplace, word of mouth travels
instantly via the internet. If a company is operating in an unscrupulous manner, you can be sure than the
offended party will let the world know on Facebook, Twitter or a blog.
What does the company specialize in? You certainly would not want a toy maker
to produce your medical device and vice versa.
The best thing is to physically visit the injection molder and take a real life look
at the facility. You can tell a lot very quickly with a walk-around visit. Be sure to ask questions and get real
Achieve more in
With the "Make Time For Success!" self-study program. 39 tips from the pros on managing time, effort, and others.
Order the142-page ebook to reduce your stress and free up time.
Click here to
get time on your side >>
There are many horror stories of companies who either neglected to actually visit the
prospective molder or, if they did visit, never really took an actual tour. Some companies will take you out for
dinner, show you a video presentation and do everything except actually show you their facility. This should
certainly set off some alarms.
Thing to look for when visiting
Besides the technical aspects that are unique to your own particular company
and product, use common sense.
Is the place dirty? Are there rags soaking up hydraulic oil around the
presses? Are there mounds of floor dry soaking up spills around the machine bases?
Take a look at the workers. Are they at least reasonably happy looking?
Nobody really likes running a molding machine, but, some companies provide cleaner and safer working
conditions than others. If they treat their own people right, they are likely to treat you right as
Are the molds stored in an orderly manner? Are the robotics all running, are
the conveyor systems intact, is the material loaded into the machine correctly, and so on?
These basic guidelines for choosing an injection molder at least provide a starting
point for discussion and further thought. It is an important decision that will have lasting consequences.