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Need machining coolant that won't stain aluminium

We are currently using a cutting coolant and leaving the material to drain after drilling. However, there is evidence of marking on the aluminium extrusion. Owing to the high volume of work, minimal handling is of major importance. What we are looking for is another type of coolant that will not leave marks on the aluminium extrusion.

Mr D. Hickie
production manager - FOLKESTONE, KENT, ENGLAND
2003

How can anyone help when you do not say what you are currently using that is causing the stain?

James Watts
- Navarre, Florida
2003

My fault, James, sorry. He is using "Soltrend Al". I omitted it thinking it might appear we were badmouthing a particular product, but you're probably right that it is critical to the question.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Need quick confidential answers? $25
Need project assistance? $100/hr.
2003

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