wrote in message
...
On Wed, 6 Nov 2013 21:53:16 +0000 (UTC), (Edward A.
Falk) wrote:
In article ,
wrote:
On Mon, 04 Nov 2013 19:54:29 -0500, "G. Ross"
wrote:
Bill wrote:
Lew Hodgett wrote:
"Edward A. Falk" wrote:
That was suggested in a recent issue of FWW, as it would yield a
better
cut (because the moving blade won't then contact the edge of the work
on
its way back out/up). So far, I have to remind myself to wait! : )
Learn something new every day, it seems.
It is easier to wait if the saw has electric brake when the trigger is
released.
Don't they all now? Even my HF SMCS has a blade brake (thought it was
a requirement). I'm really surprised that table saws don't have them.
My second-hand chop saw's electric brake has been failing of late,
and even when they work, they still take several seconds.
Several seconds? The switch is probably failing.
Chop/trim saws have universal motors (with brushes) and to have them stop
fast or brake you short circuit the motor when the power is disconnected. I
can recall decades ago modifying slot cars by installing a switch to short
circuit the little motors. When a universal motor is spinning without power,
it becomes a generator. When the universal motor/generator is short
circuited it will cause the motor to almost immediately stop rotating. Table
saws use different motors and cannot easily be made to brake.