Tom Gardner wrote:
"Ted Frater" wrote in message
...
snip

Dont cange rotation? Id be grateful for aproper technical explanation for
this.

I do that regularly and it doesnt effect the life ofc the brush, in fact
it extends the life. you get more work done this way.
Read my last post on brush usage.
Could it be that as you sell these youve a vested interest in seeing the
brushes last as little as possible?
Its not meant as a chriticism just an normal engineering question.


I've found the best way to sell more brushes is to just keep my mouth shut!

If you're reversing a brush, it is not the right brush, speed, alloy, HP or
trim...take you pick of one or more. If the wire is laying over by more
than a couple of degrees, something is wrong. Engineers sometimes spend
weeks with clients analyzing an industrial application to match all the
variables. On the other hand, for general shop use the cost is no real
concern and no brush manufacturer makes any money on that family of
products.



Ok you sell wire brushes,
however I am sorry but I have to disagree with you on theis question of
reversing rotation .
you can all try this simple test at home.
take you 2 to 6 month old tooth brush,
take a pair of sharp kitchen cissors,
trim 1/8in off the bristles wether there real or nylon.
then use it.
youll know the difference right away.
Why?
because you have restored the end of ythe bristle to its original
sharp square end.
its that sharp ness that does the work wether its a tooth brush or
your rotary wire brush.
Restore that sharp edge and you restoreits cutting ability.
its like sharpening any cutting tool wether its a drill,lane iron ,
chisel orlathe tool.
Come on!! you all know a blunt tool cuts less than a sharp one.
By reversing you then use the other side of the wire thats not been blunted.
All cutting tools get blunt with use ,so does a wire brush.
And yes, its a good enough resason to buy a new one, if you dont know
how to sharpen it.