/u/MuffMagician's posts in /r/askscience

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Imagine a mortar and pestle, both made of metal, with the pestle grinding continuously into the mortar at one point. Without using lubricant, how could erosion at the point of contact be reduced in the long term?

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How is it a car dent can be repaired with just a hair dryer and a can of compressed gas?

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How would a scientist measure the impact-force of 400 lead pellets hitting a flat surface?

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Why are greasy, oily rags at a mechanic's considered flammable (and controlled with special trash bins) but not greasy, oily rags at restaurants? (Napkins especially?)

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Can heat be blown by the wind?

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Has a person ever developed cancer, fought it off naturally, and never known about it until years later?

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What are the biological consequences of seriously delaying a bowel movement?

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Why is milk always white?

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Which is stronger: a fishing rod with the line-guides along the bottom or the line-guides along the top?

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Can two powerful wood cutting saws be damaged when plugged into the same short, 10 gauge extension cord with a 3-way outlet?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Imagine a mortar and pestle, both made of metal, with the pestle grinding continuously into the mortar at one point. Without using lubricant, how could erosion at the point of contact be reduced in the long term?	1
How is it a car dent can be repaired with just a hair dryer and a can of compressed gas?	1
How would a scientist measure the impact-force of 400 lead pellets hitting a flat surface?	1
Why are greasy, oily rags at a mechanic's considered flammable (and controlled with special trash bins) but not greasy, oily rags at restaurants? (Napkins especially?)	1
Can heat be blown by the wind?	1
Has a person ever developed cancer, fought it off naturally, and never known about it until years later?	1
What are the biological consequences of seriously delaying a bowel movement?	1
Why is milk always white?	1
Which is stronger: a fishing rod with the line-guides along the bottom or the line-guides along the top?	1
Can two powerful wood cutting saws be damaged when plugged into the same short, 10 gauge extension cord with a 3-way outlet?	1