These wheels are usable for low temperature melting metals as: Tin, Lead, Silver Zamac, etc…
They can also be used for harder metals as : Bronze, Copper, etc…
Principle Use :
When you use this wheel its capacity is at 40%, it's after 2 to 3 minutes use that the capacity becomes 100% efficient.
Explanation: These wheels are used with materials : No1: Abrasive Fiber and No 2: Abrasive Cloth.
At the beginning of use the length of No 1 & No 2 are equal, after few minutes, you will notice that the No 2 is longer than No 1,( which is normal).
The participation of No 1 is minimal, it's role is to be used as a vibration absorber with No 2, which will give you a smooth polishing without scratches, but abrasive during the removal of smudges even on hard metals.