RE: ATM My New Gringing Machine

[Alfredo Neves <arainho_cl@yahoo.com>]

Hi Frank,

Yeah, I noticed grinding was also a bit slow at 44rpm.
Changing speeds is no problem, just another pulley
diameter. I do not intend to be mass producing mirrors
so, at the moment if it takes a bit longer, well!!
Also as they say, grinding or polishing is dependent
on speed and weight! So I can just stack a bit more
weight.


Alfredo


--- Frank Ward <thewards@mindspring.com> wrote:
> Alfredo,
> 
> I hope you can change those ratios. You'll do
> all right with the 22 overarm, but polishing at
> 60 rpm would be a lot better. I have 50 rpm and
> would like it faster.
> 
> FW
> 
> -----Original Message-----
> From: owner-atm@shore.net
> [mailto:owner-atm@shore.net]On Behalf Of
> Alfredo Neves
> Sent: Tuesday, June 11, 2002 10:09 AM
> To: atm@shore.net
> Subject: ATM My New Gringing Machine
> 
> 
> 
> Hi All,
> 
> Just finished my grinding machine and would like to
> share it with wonderfull participants of this list.
> 
> http://www.geocities.com/arainho_cl/gmachine.jpg
> 
> For those who like more details: The machine is
> powered by a Siemens 1/3 HP AC motor with a 1:50
> reduction gear box. From the gear box I used pulleys
> to drive the stroke and the table. I have two
> operating speed achieved by changing pulleys:
> 
> Stroke   Table
> 22        44      Gringing
> 22        7       Polishing
> 
> I will be trying the spining method where the mirror
> is on the bottom and the over arm is fixed.
> 
> 
> Alfredo
> 
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