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PostPosted: Sun Feb 10, 2013 10:10 am 
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Name: Bruce
Location: Biggleswade
Wanting to start some plating the week after next so need to upgrade the bench grinder to do some polishing, looking around there seems to be 2 options in the bigger sizes 370w or 550w. Obviously budget is tight as always but I don't want to waste money on the 370w if its not going to be able to drive 4"/6" polishing mops.

What do you guys think?


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PostPosted: Sun Feb 10, 2013 10:43 am 
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Have you done any polishing of metal parts before? I would do some reading first before you end up wrist deep wrapped around the bench grinder.
We used to polish the TIGed edges on stainless enclosure doors and it helps to have the surface as clean as possible to start with. If it has been ground or the surface is course then use a fine grit fibre disk say 80 grit dragged over the job or a powered wire brush, then scotch bright and finally start polishing with compound. It will be a messy job as the polishing compound goes every where and needs to be kept damp to stop it from burning.
Machine wise polishing takes a lot of power if you want to do it quickly, we used a 3 phase back stand which had a 10hp motor which just did the job IF you could keep hold of the job!

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PostPosted: Sun Feb 10, 2013 1:34 pm 
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Cheers Phil, I've done some many years ago, most of the bits I'l be doing have been through the leccy bath, also got the blast cab with fine media in, then also getting wire brushes for the bench grinder and also got the dremel with various bits.

I'm not too worried how much time it takes, its more a question of how much power its going to need for the final polishing.


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PostPosted: Sun Feb 10, 2013 1:43 pm 
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Proper job :D

http://www.ebay.co.uk/itm/Polishing-Mac ... 417004ec3a

Bob


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PostPosted: Sun Feb 10, 2013 2:16 pm 
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Name: Bruce
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Cheers for that Bob :lol: :lol: :roll: :lol: :lol:

I'm sure it was indeed the mutts nuts! in its day of course :shock:

I was hoping to find something just a little more functional, and maybe a little closer to home :lol: :? :roll: :? :lol:

Bruce


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PostPosted: Sun Feb 10, 2013 2:54 pm 
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Cheers for that Bob :lol: :lol: :roll: :lol: :lol:

I'm sure it was indeed the mutts nuts! in its day of course :shock:

I was hoping to find something just a little more functional, and maybe a little closer to home :lol: :? :roll: :? :lol:

Bruce


Tut tut no pleasing some people ;)


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PostPosted: Sun Feb 10, 2013 6:41 pm 
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I suppose he`s right , the mop is probably made from fleece and it`s in another country where they dont speak much english :lol:

Bob


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PostPosted: Sun Feb 10, 2013 6:45 pm 
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PMSL scary up there :lol: :shock: :shock: :o :shock: :shock: :roll:

Just missed out on this one, bid £26 and got outbid, another up in a bit :D
Attachment:
Grinder.JPG
Grinder.JPG [ 50.34 KiB | Viewed 2115 times ]


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PostPosted: Sun Feb 10, 2013 9:06 pm 
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Location: Coedpoeth N.Wales
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I suppose he`s right , the mop is probably made from fleece and it`s in another country where they dont speak much english :lol:

Bob

Could that be----WALES :lol: :lol: :lol: :lol: :lol: :lol: :lol:


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PostPosted: Mon Feb 11, 2013 8:09 am 
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Personally, I would go for the largest bench grinder that you can afford & that includes the power rating.

Having worked in the shop fitting industry, I am no stranger to metal polishing.
Our company used an outside firm for most of the major polishing work, it is really a filthy job & one that I used to dodge if at all possible. ;)

Strange to see this topic pop up as really, when my new fabrication bench is made I am going to be making a pedestal for my bench grinder so as I can fit my new set of polishing mops. :)

Plenty of linishing prior to final polish is the order of the day. ;)

Just how hard is that compound to wash off when you come in looking like a Crow. :shock: :shock: :mrgreen: :mrgreen:

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