In article 5c1t5ct0e6godrj5pmmi20jams0dafcd9u@
4ax.com, says...

On Sat, 24 Dec 2016 07:25:58 -0500, "J. Clarke"
wrote:

In article 585e0f07$0$7342$c3e8da3
, Puckdropper
says...

krw wrote in news:3bjr5cp3effcbmilim0g15lp1ii5857lcn@
4ax.com:

On 23 Dec 2016 19:20:22 GMT, Puckdropper
puckdropper(at)yahoo(dot)com wrote:


*trim*

IIRC, my 1590 does have a blower... it's good enough. It's the switch
with two positions.

Sucking is better than blowing.


Not always. (Do you like to argue?) Try this experiment (Bill Pentz
came up with it): Take a ping pong ball and two straws. One person can
only blow through the straw and the other can only suck. Try to get the
ball to go out of a circle or into an area. The person blowing will win
every game.

If you need to see a line, a blower can be more efficient than trying to
suck the dust away.

Puckdropper

And if you're cutting steel with a lubricant
(which Bosch saws will do--the old ones even had
a powered lubricant dispenser accessory
available that was driven by the saw) do you
really want to be sucking the lubricant and
chips into the mechanism?

Into the mechanism? I don't think you want to blow it around the
room, either.

And yet that has been normal practice ever since
sawing was invented.

Of course you can always go green, but even
green doesn't suck with the saw's mechanism,
they just provide a dust port to which a
(preferably green) vacuum can be attached.

Sure. I wouldn't want to steal power from the saw for the vacuum, nor
would I want to control but the saw and the vacuum.

So you favor a jigsaw with a vacuum attachment.
While that is certainly OK if you are sawing in
your mother's living room, on a construction
site controlling the dust is of considerably
less importance.