Today I got to try out my theory about polishing a rough cast bell
with an angle grinder. If the rough casting was polished as is, there
would be irregularities that would show. That would also takea long
time. The angle grinder makes the surface flat so that polishing is
easy.

Here's the rough casting:
http://i55.tinypic.com/34sms8m.jpg

I cut the head off a bolt and screwed it through the bell and put the
smooth part of the bolt into a large drill press. Someone's moved the
collet chucks so I can't find them. So I used the three jaw chuck at
about 120 rpm. Since I was applying almost no pressure with the angle
grinder, there's no danger of the bell coming out of the chuck.
However a collet chuck would be safer.
I used a flapwheel on the angle grinder and here's the result:
http://i52.tinypic.com/b876ev.jpg

A bit of sanding with sandpaper, and then off to the polishing wheel
for a superb polish:
http://i52.tinypic.com/k18c8z.jpg

A lot of bells are needed, so we can't muck around polishing for
hours!

"Matty F" wrote in message
...
Today I got to try out my theory about polishing a rough cast bell
with an angle grinder. If the rough casting was polished as is,
there
would be irregularities that would show. That would also takea long
time. The angle grinder makes the surface flat so that polishing is
easy.

Here's the rough casting:
http://i55.tinypic.com/34sms8m.jpg

I cut the head off a bolt and screwed it through the bell and put
the
smooth part of the bolt into a large drill press. Someone's moved
the
collet chucks so I can't find them. So I used the three jaw chuck at
about 120 rpm. Since I was applying almost no pressure with the
angle
grinder, there's no danger of the bell coming out of the chuck.
However a collet chuck would be safer.
I used a flapwheel on the angle grinder and here's the result:
http://i52.tinypic.com/b876ev.jpg

A bit of sanding with sandpaper, and then off to the polishing wheel
for a superb polish:
http://i52.tinypic.com/k18c8z.jpg

A lot of bells are needed, so we can't muck around polishing for
hours!

Very nice job. Be a tad careful with all the brass dust in the air -
not nice to breath in.

AWEM

On Oct 31, 8:59 pm, "Andrew Mawson"
wrote:
"Matty F" wrote in message

...



Today I got to try out my theory about polishing a rough cast bell
with an angle grinder. If the rough casting was polished as is,
there
would be irregularities that would show. That would also takea long
time. The angle grinder makes the surface flat so that polishing is
easy.

Here's the rough casting:
http://i55.tinypic.com/34sms8m.jpg

I cut the head off a bolt and screwed it through the bell and put
the
smooth part of the bolt into a large drill press. Someone's moved
the
collet chucks so I can't find them. So I used the three jaw chuck at
about 120 rpm. Since I was applying almost no pressure with the
angle
grinder, there's no danger of the bell coming out of the chuck.
However a collet chuck would be safer.
I used a flapwheel on the angle grinder and here's the result:
http://i52.tinypic.com/b876ev.jpg

A bit of sanding with sandpaper, and then off to the polishing wheel
for a superb polish:
http://i52.tinypic.com/k18c8z.jpg

A lot of bells are needed, so we can't muck around polishing for
hours!

Very nice job. Be a tad careful with all the brass dust in the air -
not nice to breath in.

Ah I was wondering about that. Up until now I've only used the angle
grinder on steel, which I assume is not that dangerous.
I can't find safety glasses that don't fog up when I'm wearing a dust
mask and earmuffs.

Matty F wrote:

A bit of sanding with sandpaper, and then off to the polishing wheel
for a superb polish:
http://i52.tinypic.com/k18c8z.jpg

Well up to your usual standard, and we almost got to see you too.

Chris
--
Chris J Dixon Nottingham UK


Have dancing shoes, will ceilidh.

Matty F wrote:
Today I got to try out my theory about polishing a rough cast bell
with an angle grinder. If the rough casting was polished as is, there
would be irregularities that would show. That would also takea long
time. The angle grinder makes the surface flat so that polishing is
easy.

Here's the rough casting:
http://i55.tinypic.com/34sms8m.jpg

I cut the head off a bolt and screwed it through the bell and put the
smooth part of the bolt into a large drill press. Someone's moved the
collet chucks so I can't find them. So I used the three jaw chuck at
about 120 rpm. Since I was applying almost no pressure with the angle
grinder, there's no danger of the bell coming out of the chuck.
However a collet chuck would be safer.
I used a flapwheel on the angle grinder and here's the result:
http://i52.tinypic.com/b876ev.jpg

A bit of sanding with sandpaper, and then off to the polishing wheel
for a superb polish:
http://i52.tinypic.com/k18c8z.jpg

A lot of bells are needed, so we can't muck around polishing for
hours!

Matty - you are 'Angle Grinder Man'!!!


--
Dave - The Medway Handyman
www.medwayhandyman.co.uk

On 31/10/2010 08:21, Matty F wrote:


Snip

Ah I was wondering about that. Up until now I've only used the angle
grinder on steel, which I assume is not that dangerous.
I can't find safety glasses that don't fog up when I'm wearing a dust
mask and earmuffs.

Try wiping the inside with a smear of normal hard hand soap (no water)
and report back.

Dave

On Nov 1, 11:05 am, Dave wrote:
On 31/10/2010 08:21, Matty F wrote:

Snip

Ah I was wondering about that. Up until now I've only used the angle
grinder on steel, which I assume is not that dangerous.
I can't find safety glasses that don't fog up when I'm wearing a dust
mask and earmuffs.

Try wiping the inside with a smear of normal hard hand soap (no water)
and report back.

Well, I went to all the hand basins around here and there is no hand
soap any more. I put some liquid soap on my glasses and that did
reduce the fogging. I also have a better dust mask which seals on my
face better.

On Oct 31, 4:51*am, Matty F wrote:
Today I got to try out my theory about polishing a rough cast bell
with an angle grinder. If the rough casting was polished as is, there
would be irregularities that would show. That would also takea long
time. The angle grinder makes the surface flat so that polishing is
easy.

Here's the rough casting:http://i55.tinypic.com/34sms8m.jpg

I cut the head off a bolt and screwed it through the bell and put the
smooth part of the bolt into a large drill press. Someone's moved the
collet chucks so I can't find them. So I used the three jaw chuck at
about 120 rpm. Since I was applying almost no pressure with the angle
grinder, there's no danger of the bell coming out of the chuck.
However a collet chuck would be safer.
I used a flapwheel on the angle grinder and here's the result:http://i52.tinypic.com/b876ev.jpg

A bit of sanding with sandpaper, and then off to the polishing wheel
for a superb polish:http://i52.tinypic.com/k18c8z.jpg

A lot of bells are needed, so we can't muck around polishing for
hours!

Fine job. Would you mind if this were copied onto the wiki so mroe
people can see how to do it?


NT

On Nov 2, 11:52 pm, Tabby wrote:
On Oct 31, 4:51 am, Matty F wrote:



Today I got to try out my theory about polishing a rough cast bell
with an angle grinder. If the rough casting was polished as is, there
would be irregularities that would show. That would also takea long
time. The angle grinder makes the surface flat so that polishing is
easy.

Here's the rough casting:http://i55.tinypic.com/34sms8m.jpg

I cut the head off a bolt and screwed it through the bell and put the
smooth part of the bolt into a large drill press. Someone's moved the
collet chucks so I can't find them. So I used the three jaw chuck at
about 120 rpm. Since I was applying almost no pressure with the angle
grinder, there's no danger of the bell coming out of the chuck.
However a collet chuck would be safer.
I used a flapwheel on the angle grinder and here's the result:http://i52.tinypic.com/b876ev.jpg

A bit of sanding with sandpaper, and then off to the polishing wheel
for a superb polish:http://i52.tinypic.com/k18c8z.jpg

A lot of bells are needed, so we can't muck around polishing for
hours!

Fine job. Would you mind if this were copied onto the wiki so mroe
people can see how to do it?

OK, as long as there are cautions about using a dust mask, and it's
unwise to spin such an object fast in a three jaw chuck, because if it
comes loose it will fly across the room. The idea is to use the lowest
speed of the drill press, as the angle grinder is doing all the work.

On Nov 2, 1:11*pm, Matty F wrote:
On Nov 2, 11:52 pm, Tabby wrote:



On Oct 31, 4:51 am, Matty F wrote:

Today I got to try out my theory about polishing a rough cast bell
with an angle grinder. If the rough casting was polished as is, there
would be irregularities that would show. That would also takea long
time. The angle grinder makes the surface flat so that polishing is
easy.

Here's the rough casting:http://i55.tinypic.com/34sms8m.jpg

I cut the head off a bolt and screwed it through the bell and put the
smooth part of the bolt into a large drill press. Someone's moved the
collet chucks so I can't find them. So I used the three jaw chuck at
about 120 rpm. Since I was applying almost no pressure with the angle
grinder, there's no danger of the bell coming out of the chuck.
However a collet chuck would be safer.
I used a flapwheel on the angle grinder and here's the result:http://i52.tinypic.com/b876ev.jpg

A bit of sanding with sandpaper, and then off to the polishing wheel
for a superb polish:http://i52.tinypic.com/k18c8z.jpg

A lot of bells are needed, so we can't muck around polishing for
hours!

Fine job. Would you mind if this were copied onto the wiki so mroe
people can see how to do it?

OK, as long as there are cautions about using a dust mask, and it's
unwise to spin such an object fast in a three jaw chuck, because if it
comes loose it will fly across the room. The idea is to use the lowest
speed of the drill press, as the angle grinder is doing all the work.


Great, I'll move it over at some point. Cheers


NT

In message
,
Matty F writes
On Nov 1, 11:05 am, Dave wrote:
On 31/10/2010 08:21, Matty F wrote:

Snip

Ah I was wondering about that. Up until now I've only used the angle
grinder on steel, which I assume is not that dangerous.
I can't find safety glasses that don't fog up when I'm wearing a dust
mask and earmuffs.

Try wiping the inside with a smear of normal hard hand soap (no water)
and report back.

Well, I went to all the hand basins around here and there is no hand
soap any more. I put some liquid soap on my glasses and that did
reduce the fogging. I also have a better dust mask which seals on my
face better.

Gob on the glasses is a good demister


--
geoff