Tips on using the Kernel

---

Media:

There are a variety of corncob grit sizes available, but the most common size is 20/40. It is a good, standard size that will remove just about every coating. The corn media is available in 40 lb. bags.

Equipment:

You will need a 175-185 cfm compressor to run the Kernel at constant pressure.

Start the machine with 60 psi of pressure, and increase as needed. Adjust the choke valve and the media valve to get a constant (not sputtering) flow. When it is running properly, the media will be slightly discoloring the air flowing from the nozzle

With the compressor running, open the valve at the base of the moisture separator until you hear air hissing out of it. Watch to see that water is dripping out of the open valve; you might need to open this valve more when working under humid conditions.

Technique:

Spray the wood like you would when spray painting. Keep a constant distance from the wood, and keep moving to avoid cutting into the wood. "Feather" the spray in and out of areas to keep a constant look. Always test an inconspicuous area before starting. When you begin to blast and until you get your technique down, you may put a few "divots" in the wood. You can come back with a small orbital sander and even these out.

Clean up:

When you've finished with the stain removal, close the media valve and blast any residue out of the checks and away from the home. A good shop vacuum will pick up a lot of the used corn media, and the material can be re-used if you filter it. Corncob media will act like a mulch, but if you leave mounds on the grass the media will absorb moisture from the plants, so wet down the grass when you are done.