What is the abrasive blend knob?

The abrasive blend knob can be a bit of a mystery. What’s the right setting? How far can I turn it clockwise? Will opening it create a richer abrasive stream? Every blaster is configured to a specification. This means the tank orifice, the nozzle, and the blast pressure have been carefully selected for the application. When the abrasive blend valve is fully closed, which happens when the knob is in the max position, leave it there! This position allows the most abrasive to flow through your blaster. The richness of the abrasive stream is ultimately determined by the tank orifice, where the abrasive enters the air stream. Watch the video to learn more!

Need a Calibration Cap?

If several operators alternate use of your blaster, and you see a difference in abrasive flow between users, then a calibration cap is a good idea. A calibration cap locks this knob into the maximum position and reduces variability operator to operator. Contact Customer Service at sales@comcocinc.com or 1-818-841-5500 to place an order.

Dig Deeper

5 ways to break your blaster

5 Ways to Break your Blaster

There are many ways to break your Comco blaster–some quite explosive! But if you want to keep your blaster humming along, you should know the common operator mistakes that lead to unplanned and sometimes costly repairs. Continue Reading →
Old tank orifice vs. new tank orifice with seal

Maintenance Tip: Check the seal on the tank orifice!

In 2008, we released a new design for the modulator in the AccuFlo® that is still in use today. It functions more powerfully and precisely with less wear and tear than previous editions of the modulator.  Continue Reading →
The AccuFlo features a larger abrasive tank with a clear cover.

How to Change Abrasive in a Comco Blaster

Do you ever need to change abrasive? Swapping out one type of abrasive for another is a quick and easy process. It just requires thorough cleaning. Your goal is to remove any trace of one media before blasting with another. Continue Reading →
Pedal pumping an AccuFlo or MicroBlaster is damaging and inefficient.

Fight the Urge to Pedal Pump

Pedal pumping refers to the rapid pressing and releasing of a micro-abrasive blaster’s footswitch. It quickly starts and stops the abrasive stream, eliciting blasting intervals that last 2-4 seconds. Continue Reading →
Rob in Tech Support

Questions about Blaster Maintenance?

Email me or give me a call at 818-841-5500