Handwheels again?!? was Re: true closed loop vs. hobby closed loop

Aaron,

Nice post. I agree with nearly all of it.

But the claims made are not ones of opinion or preference. The
repeated claims are that using handwheels is "faster" or "easier"
than using the cnc machine "manual" capabilities... (and the
words "quick-and-dirty" or "one-off" seem also to be generally
included)

As an engineer, you surely understand that such a claim needs to have
something behind it besides "opinion" or "preference"...

I have claimed the opposite. And posted examples of how, and why this
belief is simply untrue. I'm asking others to just support
their "faster, easier" claims with REAL examples.

What item or procedure is faster or easier using mechanical
handwheels than using the "manual" cnc functions like MDI and jog?

It's NOT cutting a part off with an endmill at some not-especially
accurate place; I've posted how the cnc will "beat" that... It's NOT
drilling a couple holes; or lining up a part to a feature, or a
feature to a machine axis...

Ballendo

P.S. I don't care if you wear a baseball cap or not. Until you tell
me that by wearing one I'll be able to make my parts faster. Or
easier. Or better. THEN I'm gonna want to see how. And why.


--- In CAD_CAM_EDM_DRO@yahoogroups.com, "industrialhobbies"
<admin@i...> wrote:

> When I machine I like to wear a baseball cap, you may not.
>
> Hand wheels are the same way, an opinion or preference. As a
> manufacturer I do not install them for a few reasons, safety is a

big

> one, performance is another.
>
> Safety is an opinion as well, I wear hearing protection but not
> safety glasses (go figure). Having a spinning handle out there

might

> bother you or it might not, personally it bothers me, plus it adds

a

> big liability to my product. So their gone.
>
> The added rotational inertia of the wheels does affect performance,
> no matter how you work it. Having all that mass at the peripheral
> adds increased load when accelerating and decelerating, that's just
> simple physics.
>
> As far as the arguments how the wheels help you, they are all based
> on YOUR style of machining. Some folks just figured out how to do
> the same things you rely on the wheels for without them. Either

way,

> none of us are doing it wrong, just different.
>
> Thanks
> Aaron Moss
> www.IndustrialHobbies.com
>
> PS. When I say I like to wear a baseball cap… That's ALL I wear

and

> I will swear that I machine 10 times better that way ;-)
>
> Is that wrong? Or just different?