When a buffer machine suddenly grabs, skips, or “hops” across the surface, it can be frustrating - and risky for your paintwork. This behavior is usually caused by a mix of technique, setup, and surface conditions rather than a faulty machine.
Pad Choice and Condition Matter
An overly aggressive or dry pad creates too much friction, causing the machine to grab. Worn, hardened, or contaminated pads can also catch on the surface unevenly. Using a clean, properly primed pad with the right level of softness helps the buffer glide smoothly.
Too Much Pressure or Wrong Angle
Pressing down hard or tilting the machine concentrates force on one edge of the pad, which makes the buffer jump. Keeping the pad flat against the surface and using light, even pressure improves stability and control.
Incorrect Speed Settings
High speed amplifies friction, especially on curved panels or edges. If the buffer feels unstable, lower the speed and work up gradually. Controlled speed allows the pad to stay planted without sudden grabs.
Insufficient Lubrication from Polish or Compound
Dry buffing increases drag and causes hopping. Make sure there is enough polish or compound on the pad and surface to maintain lubrication. Reapply small amounts as needed to keep movement smooth.
Surface Contamination or Uneven Texture
Dirt, tar, or rough clear coat patches can catch the pad and cause skipping. Thorough washing and decontamination before polishing reduce friction points and help the buffer move evenly.
Conclusion
A buffer machine that grabs or hops is usually reacting to friction imbalances caused by pad choice, pressure, speed, or surface condition. With proper setup, clean pads, and controlled technique, the machine will glide smoothly and produce more consistent, safer results.
