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i bought a $16 impact drill. Problem is that there are sparks(though small) where i think the carbon brushes are :

 is that normal?

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As Re-design rightly says the sparks are perfectly normal & will become smaller & less noticeable as the brushes bed into the commutator.
lemonie4 years ago
As long as the sprites stay inside the drill you are safe from them.

L
rickharris4 years ago
Actually quite hard to prevent it.
Yes. Perfectly.
+1. And they should get smaller as the drill is used and the brushes seat.