Ever wonder why your solder paste release is inconsistent, even with a perfect design? The culprit isn't usually your paste or your iron - it's the microscopic texture of your stencil's aperture walls.

If you're working with fine-pitch components (0402s, BGAs, or QFNs), here is why Electropolishing is the "secret sauce" for a successful build.

Why Electropolishing? The Science of "Smooth" ✨

Most stencils are laser-cut. While incredibly precise, the laser leaves behind microscopic "slag" and jagged burrs on the walls of the holes. These tiny imperfections act like "teeth" that grab onto the solder paste, causing it to clog rather than transfer to your PCB.

Electropolishing is a chemical-electrical bath that strips away a microscopic layer of the stainless steel. It rounds off those peaks and burrs, leaving the aperture walls mirror-smooth so the paste slides out effortlessly.

Electropolishing vs. Other Finishing Methods 🔍

🚀 Level Up Your Assembly Game with JLCPCB

At JLCPCB, we offer high-precision laser cutting with professional Electropolishing and Nano-coating options to ensure your PCB assembly achieves professional-grade results.

Stop fighting the paste. Start stenciling like a pro.

🎁 Click to claim your $11 Stencil Coupon, and get your Electropolished Stencils here!

✨ First time at JLCPCB? Register now to unlock a $123 New User Coupon Bundle!