The Go-to Abrasive…
Thanks to its particles’ monoclinic shape, sodium bicarbonate easily abrades pliable materials without damaging delicate underlying layers and components. And, sodium bicarbonate is water soluble, which makes for easy post-blasting clean-up.
Our customers use sodium bicarbonate across industries to deburr polymers, strip wire insulation, remove epoxy on electronic test probe IDs—and the list goes on.
…that is Almost Perfect
Sodium bicarbonate comes with one small annoyance: build-up. Most abrasive media gradually erodes a blaster’s mixing chamber, output fittings, nosepiece, and nozzle.
Sodium bicarbonate plates at transition points, like: (clockwise from top) the bottom of MicroBlaster’s mixing chamber; the inlet side of the nozzle (0.060″ pictured) and inside the tip of the nozzle (0.046″ pictured).
So, What Do You Do?
Keep a close watch on the abrasive mixture exiting the nozzle. Noticeable reduction of abrasive in the air stream is the best indicator that plating is underway.
Particles tend to plate at four transition points inside the blaster. Clean these points thoroughly. Like plaque, build-up attracts build-up. If any residue remains, the rate of build-up increases, shutting down the system again, only quicker.
Build-Up Removal Guide
Don’t Cut the Hose!
All abrasive—including sodium bicarbonate–wears through the hose that connects the handpiece to the blaster.
Even a slight rupture in the abrasive hose leading from your blaster to the handpiece can cause a “White Christmas” in your lab.
Reduce downtime (and frustration) by checking the abrasive hose regularly; keeping an extra hose in stock, and replacing the entire hose at the first major sign of wear.
Very fine abrasives tend to clump inside a blaster when introduced to even a small amount of moisture. Learn how to spot symptoms of moisture contamination. Continue reading
Tech Support is available for the life of your Comco system. If you have questions about performing your own maintenance, we are available to help. Email me or give us a call at 1-818-841-5500.