Hi,

The question is as per title :  I've just bought my first ever Perma-
Grit sanding block (Type 140 coarse + smooth) and I just wondered if
anyone here has any tips on their use ?  I read once that new files
should be saved to be used only on aluminium and brass until they are
a bit worn then to use them on steel.  Are there any similar
strictures on using Perma-Grits on hardwoods before/after balsa ?  I
have some leading edges to sort out of which half are balsa and
t'other half maple,  will balsa clog the new grit surface ?

Any other tips ?

Thanks,

Mike

"Mike"  wrote in message 
news:1175977170.758693.186470@d57g2000hsg.googlegroups.com...
> Hi,
>
> The question is as per title :  I've just bought my first ever Perma-
> Grit sanding block (Type 140 coarse + smooth) and I just wondered if
> anyone here has any tips on their use ?  I read once that new files
> should be saved to be used only on aluminium and brass until they are
> a bit worn then to use them on steel.  Are there any similar
> strictures on using Perma-Grits on hardwoods before/after balsa ?  I
> have some leading edges to sort out of which half are balsa and
> t'other half maple,  will balsa clog the new grit surface ?
>
> Any other tips ?
>
> Thanks,
>
> Mike

I've had a Permagrit sanding block for several years - one side is 180 grit 
abd the other a coarser grade - can't remember what.

I've used it on all sorts of timber and never had any real clogging but if 
there is any hint of this I give it a scrub with a wire brush and normal 
service is resumed.

I've also used it occasionally on non ferrous metals - don't know how long 
it would stand up to using on harder stuff though - too tight to risk it...>

Malcolm Fisher wrote:
> "Mike"  wrote in message 
> news:1175977170.758693.186470@d57g2000hsg.googlegroups.com...
>> Hi,
>>
>> The question is as per title :  I've just bought my first ever Perma-
>> Grit sanding block (Type 140 coarse + smooth) and I just wondered if
>> anyone here has any tips on their use ?  I read once that new files
>> should be saved to be used only on aluminium and brass until they are
>> a bit worn then to use them on steel.  Are there any similar
>> strictures on using Perma-Grits on hardwoods before/after balsa ?  I
>> have some leading edges to sort out of which half are balsa and
>> t'other half maple,  will balsa clog the new grit surface ?
>>
>> Any other tips ?
>>
>> Thanks,
>>
>> Mike
> 
> I've had a Permagrit sanding block for several years - one side is 180 grit 
> abd the other a coarser grade - can't remember what.
> 
> I've used it on all sorts of timber and never had any real clogging but if 
> there is any hint of this I give it a scrub with a wire brush and normal 
> service is resumed.
> 
> I've also used it occasionally on non ferrous metals - don't know how long 
> it would stand up to using on harder stuff though - too tight to risk it...> 
> 
> 
I have used mine on kitchen tiles, steel,etc and its still going strong 
and not had any problems with clogging just sand which ever you need to 
first

In message <qTbSh.5212$nM6.5079@newsfe2-win.ntli.net>, funfly3 
 writes
>Malcolm Fisher wrote:
>> "Mike"  wrote in message 
>>news:1175977170.758693.186470@d57g2000hsg.googlegroups.com...
>>> Hi,
>>>
>>> The question is as per title :  I've just bought my first ever Perma-
>>> Grit sanding block (Type 140 coarse + smooth) and I just wondered if
>>> anyone here has any tips on their use ?
>I have used mine on kitchen tiles, steel,etc and its still going strong 
>and not had any problems with clogging just sand which ever you need to 
>first
Should it get clogged with glue etc. that does not scrub out with a 
brush use Nitromors or similar paint stripper on it as per the Nitromors 
instructions and it will be good as new. When you do this you may lose 
the gold colour but do not worry it still works.

-- 
Max George

On 7 Apr, 21:19, "Mike"  wrote:
> Hi,
>
> The question is as per title :  I've just bought my first ever Perma-
> Grit sanding block (Type 140 coarse + smooth) and I just wondered if
> anyone here has any tips on their use ?  I read once that new files
> should be saved to be used only on aluminium and brass until they are
> a bit worn then to use them on steel.  Are there any similar
> strictures on using Perma-Grits on hardwoods before/after balsa ?  I
> have some leading edges to sort out of which half are balsa and
> t'other half maple,  will balsa clog the new grit surface ?
>
> Any other tips ?

I fount that using them for hard materials like glass fibre, carbon
etc took off the superbly keen edge they come with so they aren't so
good on balsa, had to replace the surface of my 300mm long block for
this reason but they do sell replacement surfaces at reasonable price.
Since then I keep one s specially for hard materials. The little
rotary burrs are a god send for putting holes in canopies, cowls etc.
Greg