Time to time cleaning of stored pattern should be done by ___________(a) Distilled water(b) Dry cleaning(c) Treated with proper chemical fluids(d) Vegetable oilsThe question was posed to me by my school principal while I was bunking the class.This interesting question is from Finishing Patterns & Storing of Patterns in division Pattern and Pattern Making of Casting-Forming-Welding I

Time to time cleaning of stored pattern should be done by ___________(

1.	Time to time cleaning of stored pattern should be done by ___________(a) Distilled water(b) Dry cleaning(c) Treated with proper chemical fluids(d) Vegetable oilsThe question was posed to me by my school principal while I was bunking the class.This interesting question is from Finishing Patterns & Storing of Patterns in division Pattern and Pattern Making of Casting-Forming-Welding I
Answer» The correct option is (b) Dry CLEANING Easy explanation: No dust or CHEMICAL or MOISTURE should be LEFT over the surface of the pattern for longer PERIODS hence time to time dry cleaning is a must.

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