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Replaceable Carbon Brushes - what is that about?
It means it’s a lo-tech motor that has consumable contact points between the rotor and power connectors. Over time / use they wear out.
https://cordlessdrillzone.com/drill-wars/brushless-vs-brushed-motor/
You’d be doing well out of it if you actually wore the brushes out though. That’s a lot of drilling.
It will chisel those bricks out fine I reckon.
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Would that work for cutting out bricks from a bricked up fireplace?
Stitch drilling is pretty straightforward and will do the job. This is a guide but obviously replace the hole for an extractor fan for whatever shape you need or want.
Alternatively hiring an awl saw will let you cut the mortar out between the bricks with minimal dust
Replaceable Carbon Brushes - what is that about?
The carbon brushes deliver current from the wiring to the moving parts of the motor. Because they are in contact with the rotating parts they can eventually wear down therefore they will need replacing. Cheap tools have low quality brushes that wear down quickly and are designed to be hard or impossible to replace - this is a form of planned obsolescence. Quality tools have carbon brushes that wear much slower and are easy to replace in my experience other stuff fails before the brushes wear to the point that they need replacing.
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Howard
Bobbo
@bobble
cheers on drill help
@jsabine - will they be much better than a brand new bosch masonry bit in my kit?
Think I might get what @Bobbo linked as I already have a drill @hugo7. Would that work for cutting out bricks from a bricked up fireplace? would i need a new drill bit for the 7mm hole I'm trying?
Looks solid. Replaceable Carbon Brushes - what is that about?
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