Mush Buffing

Mush Buffing has gained wide acceptance over the past 25 years as a cost effective method to buff items with complex geometries without having to constantly re-position the part. It usually uses long buff heads— sometimes as long as 10 to 12 feet long. Mush Buffing usually uses larger diameter mush buffs (often 20” to 26”) turning at a slow RPM
(often 600 to 800 RPM ). 

This large diameter mush buff running at a slow speed enables the buff wheel to conform to the part without doing damage to the part or burning the buff. It is a slower and cooler method compared to tangential buffing which is why it uses such long heads. The part travels across the face of the buffing wheel head on a conveyor, often rotating as it travels to better present all sides to the buff.

Much Buffing PhotoMush Buffing | Arrow shows part in buffing machine

One consideration for Mush Buffing is that it often requires more compound than a comparable Tangential operation. This is because the part is often buried so deep in the rotating buff that the compound is nearly “raked out” of the buff during normal operation. Good compound penetration into the buff with the applicator is critical for proper Mush Buff operations.

The less aggressive nature and lower temperatures makes Mush Buffing very good for complex shapes made out of non-Ferrous materials such as Brass, Zinc and Aluminum. These softer metals buff quicker than the ferrous materials, so the lower forces in Mush Buffing is a good fit. In addition, the lower temperatures can allow the use of poly-cotton mush buffs for longer buff life and often much lower total buffing costs.




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