
Injection Molding Sink Marks: Causes & Fixes
One client brought over a legacy mold for rugged sensor housing. After three production runs, they were still getting deep indentations around the internal support
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One client brought over a legacy mold for rugged sensor housing. After three production runs, they were still getting deep indentations around the internal support

I still remember the plastic sample part sitting on my desk. It looked great. Clean lines. Perfect fit. But the mold? That was another story.

Years ago, I lost a project and I didn’t understand why. I’d sent drawings, material specs, and deadlines. Everything was covered. Or so I thought.

I once lost a whole week chasing a problem I didn’t understand. Parts were failing QA, but nobody could figure out why. It wasn’t shrinkage.

I once promised a client a delivery date I couldn’t keep. Why? Because I didn’t fully understand how long injection molding really takes. And I

Sometimes the problem isn’t the part. It’s the process. Years ago, I kept getting complaints from customers about loose connections in one of our plastic

I used to think overmolding was too complex. The first time I considered it, I was building a small batch of handheld devices. I needed

We were in a supplier meeting, looking at mold options and everyone nodded like they understood. I didn’t. I had no clue what a family

I used to “guess” my way through plastic part production. Sometimes it worked. Other times, I ended up with warped parts, long delays, or higher
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