[TheForge] OT -12v motors

[peter fels]

On Jun 20, 2011, at 6:29 PM, Jerry Frost wrote:

> That's true indeed Grover but screwing up work faster means you learn faster 
> so it's a trade off.
> 
> Andy has a solid safety point; faster means more damage if the work gets 
> away from you. SO stay out of the plane of rotation. Make it a matter of 
> reflex when operating wire wheels, buffs and belt grinders even wheel 
> grinders. If you just never stand in the plane of rotaion you never have to 
> remember which when it's okay or which tool might get you a new piercing in 
> a bad place.
> 
> Jer
> ----- Original Message ----- 
> From: <Grover.Richardson at gtri.gatech.edu>
> To: <theforge at mailman.qth.net>
> Sent: Monday, June 20, 2011 8:01 PM
> Subject: Re: [TheForge] OT -12v motors
> 
> 
>> Yes.  Modern power tools allow us to work "more quickly (yes, I know that 
>> is bad English, but it put it like that one porpose to make the pint<G>)." 
>> They also allow us to mess up more quickly.  I find that working with a 
>> smaller tools until I learn the techniques means less messed up work 
>> overall, for me.  Different folks do different things.  That sounds like 
>> sage advice to me.
>> 
>> All the best.
>> 
>> -----Original Message-----
>> From: theforge-bounces at mailman.qth.net 
>> [mailto:theforge-bounces at mailman.qth.net] On Behalf Of Andrew Vida
>> Sent: Monday, June 20, 2011 2:56 PM
>> To: Sponsored by ABANA
>> Subject: Re: [TheForge] OT -12v motors
>> 
>> On 6/20/2011 8:22 AM, Grover.Richardson at gtri.gatech.edu wrote:
>>> The question is how much HP does a normal 110 V motor have, the one
>> used on the buffing wheel that you wish to replicate.  Find a dc motor
>> of equivalent horsepower and you will have a pretty much equivalent
>> grinder.  The dc motor will have different characteristics under load
>> (shunt or series fed (bunches of gobbledegook that is not that important
>> to someone who just wants to use it<G>), but overall should provide you
>> with a pleasurable tool.
>>> 
>> 
>> My small buffer, 1800 rpm, is 1/2 hp.  It will hurt you if you do not
>> show the proper care, but my 3600 rpm 3/4 hp is monster enough to kill
>> you fast and ugly.  You don't need more power for anything of moderate
>> size.    Those large spindle, high hp industrial buffers such as the
>> ones GE made ages ago have their places, but  only for substantially
>> larger work.  I'd call 1/2 hp good for most tasks.  A lower spindle
>> speed is definitely desirable from both the safety standpoint as well as
>> that of not cutting your surfaces.  3600 rpm motors will allow you to
>> cut very deeply into your work far faster than many people would
>> initially think possible.  The difference between 1800 and 3600 is
>> remarkable.
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> 
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