On 2016-03-18 17:19:51 +0000, [email protected] said:
> On Fri, 18 Mar 2016 09:16:50 -0700, Electric Comet
> <[email protected]> wrote:
>
>> violin makers like to use 12000 grit mesh sandpaper
>> found it as polishing paper and rated in microns instead of grit
>>
>
>
> These pads go to 12000x
> http://www.leevalley.com/en/Wood/page.aspx?p=62127&cat=1,42500
Those particular pads are designed for plastic. But MicroMesh does
make a product for wood
http://www.sisweb.com/micromesh/mmr_sheets.htm
> These sheets go to .5 micron approx. 9000x
> http://www.leevalley.com/en/Wood/page.aspx?p=33004&cat=1,43072
> John T
>
>
> --- news://freenews.netfront.net/ - complaints: [email protected] ---
On 2016-03-19 20:15:29 +0000, Electric Comet said:
> On Sat, 19 Mar 2016 07:25:38 -0700
> Ralph E Lindberg <[email protected]> wrote:
>
>> Those particular pads are designed for plastic. But MicroMesh does
>> make a product for wood
>
> have you ever tried these
>
> have yet to try mesh paper but it sounds like a sensible design
> and i have seen online that autobody shops really like the mesh
>
Yes. but depends on the wood. A real soft wood like Big Leaf maple it
would make no difference. But a real hard wood like Kingwood or
Rosewood I often 6000 to 12000. I always sand until I can't see any
difference between the last grit and the current grit. Then I usually
go one more girt
On Sat, 19 Mar 2016 16:11:16 -0700
Ralph E Lindberg <[email protected]> wrote:
> Yes. but depends on the wood. A real soft wood like Big Leaf maple
> it would make no difference. But a real hard wood like Kingwood or
> Rosewood I often 6000 to 12000. I always sand until I can't see any
> difference between the last grit and the current grit. Then I usually
> go one more girt
from time to time i work with wood and turned pieces that could
benefit and take a high polish
will hve to try this brand then
Electric Comet <[email protected]> wrote in news:nci675$1bk$1
@dont-email.me:
> polish was specified for a dobsonian telescope but a high grit
> polishing paper would also work i think
I think you'd have a hard time getting the paper to conform
well enough to the shape of the mirror. Usually telescope
mirrors are polished using a blank with the complementary
shape, with just a very thin layer of polishing compound.
John
On 2016-03-19 14:29:01 +0000, John McCoy said:
> Electric Comet <[email protected]> wrote in news:nci675$1bk$1
> @dont-email.me:
>
>> polish was specified for a dobsonian telescope but a high grit
>> polishing paper would also work i think
>
> I think you'd have a hard time getting the paper to conform
> well enough to the shape of the mirror. Usually telescope
> mirrors are polished using a blank with the complementary
> shape, with just a very thin layer of polishing compound.
>
> John
I agree (and I have helped grind mirrors before, for a friends Newtonian)
On Fri, 18 Mar 2016 09:16:50 -0700, Electric Comet
<[email protected]> wrote:
>violin makers like to use 12000 grit mesh sandpaper
>found it as polishing paper and rated in microns instead of grit
>
These pads go to 12000x
http://www.leevalley.com/en/Wood/page.aspx?p=62127&cat=1,42500
These sheets go to .5 micron approx. 9000x
http://www.leevalley.com/en/Wood/page.aspx?p=33004&cat=1,43072
John T
--- news://freenews.netfront.net/ - complaints: [email protected] ---
On 18/03/2016 10:16 AM, Electric Comet wrote:
> violin makers like to use 12000 grit mesh sandpaper
>
> found it as polishing paper and rated in microns instead of grit
>
30+ years ago I worked in my spare time for a violin shop. They
sold inexpensive Chinese violins to beginners but we always had
to set them up properly, as well as rehair the bows. As the violins had
been crudely varnished, we used a pumice/oil mix to rub them down and
then rottenstone/oil to give them a softer gloss.
Graham
On Fri, 18 Mar 2016 13:40:19 -0600
graham <[email protected]> wrote:
> to set them up properly, as well as rehair the bows. As the violins
> had been crudely varnished, we used a pumice/oil mix to rub them down
> and then rottenstone/oil to give them a softer gloss.
was wondering when one would just go to a polish instead of these
fine grits but i guess this stuff would be a dry application so
perhaps that is the advantage
On 18/03/2016 2:29 PM, Electric Comet wrote:
> On Fri, 18 Mar 2016 13:40:19 -0600
> graham <[email protected]> wrote:
>
>> to set them up properly, as well as rehair the bows. As the violins
>> had been crudely varnished, we used a pumice/oil mix to rub them down
>> and then rottenstone/oil to give them a softer gloss.
>
> was wondering when one would just go to a polish instead of these
> fine grits but i guess this stuff would be a dry application so
> perhaps that is the advantage
>
These superfine abrasives would be necessary if one is dealing with a fine
instrument. One could use 60grit on a hillbilly fiddle:-)
Graham
On Fri, 18 Mar 2016 15:41:53 -0600
graham <[email protected]> wrote:
> These superfine abrasives would be necessary if one is dealing with a
> fine instrument. One could use 60grit on a hillbilly fiddle:-)
you misunderstand
when do you decide on a paste versus a really high grit paper
there are polishing papers for lenses for example but historically
lenses used polishes
polish was specified for a dobsonian telescope but a high grit
polishing paper would also work i think
On Sat, 19 Mar 2016 07:25:38 -0700
Ralph E Lindberg <[email protected]> wrote:
> Those particular pads are designed for plastic. But MicroMesh does
> make a product for wood
have you ever tried these
have yet to try mesh paper but it sounds like a sensible design
and i have seen online that autobody shops really like the mesh