# Five Years as a Mold Designer: My Journey
I graduated from a technical college in 2019 with a degree in mechanical design. My first job was at a medium-sized mold shop in Ningbo, and honestly, I had no idea what I was getting into.
The first month was brutal. I sat behind a senior designer who could spot draft angle issues just by looking at a 2D drawing. I couldn't even tell the difference between a slider and a lifter without asking. There were days I wondered if I'd chosen the wrong career.
But I stuck with it. I spent evenings studying mold design textbooks. I stayed late to watch the mold makers assemble tools in the workshop. I asked so many questions that I'm pretty sure my colleagues got tired of me.
By the end of year two, I was designing simple two-plate molds on my own. Year three, I graduated to three-plate molds with basic side actions. Year four, I designed my first hot runner system. Now, in year five, I'm handling stack mold designs for a major home appliance client.
The turning point for me was when I finally understood gate design. It sounds simple, but getting gate location and size right changes everything. A bad gate means a bad part, no matter how perfect everything else is. I spent weeks studying gate design fundamentals until it finally clicked.
What I tell newcomers: don't be afraid to make mistakes. Every mold designer has a collection of failed designs. The key is learning why they failed. Keep a notebook. Sketch ideas by hand before going to CAD. Talk to the mold makers — they know things no textbook teaches.
I'm still learning every day. That's what I love about this field.