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12th March 2014, 06:45 PM #1
200mm Bench Grinders - what spinny things can be used?
There's no one sub-forum for these questions, as they relate to Finishing, Metalwork, and Machinery, so here will do for a start.
Just about to get a 200mm grinder or two and of course they need spinning things to go on them. Because they all relate to different sections (re above) it's a bit tricky to run down the various options (probably have to deal with a number of vendors I suppose).
I should be pretty sorted for grinding wheels (AlOx, Norton 3x Blue, or CBN) and apart from them I can think of:
- Swansdown mops for polishing wax off timber
- Calico mops for polishing off metal, and timber (2 separate mops)
- Stitched cloth wheels (for applying polish to the metal???)
- Wire wheels for the heavy lifting on metal restoration
- Scotchbrite et al for restoring metal, or satin finishing
- Flap wheels, again for heavy lifting on metal I presume
Anything else to consider?
Taking them individually:
Swansdown Mops:
Ubeaut have what appear to be very good locally made mops from genuine Swan's Down, but don't show a 200mm version. Do they exist? Are they suitable for metal polishing or would a less expensive Calico mop be more appropriate?
Calico Mops:
Are these suitable for timber? I think yes, but would a Swansdown be better?
Stitched Cloth:
Near as I can see these are used for applying polish to metals, or do they have other uses?
Wire Wheels:
I know what they're for, but don't seem to be able to turn up any that have solid brass bristles. Just brass plated, which appears to be a bit of a nonsense when there's some nice hard steel just under the surface.
Scotchbrite:
There seem to be a few copies around which are sigbificantly cheaper and by all accounts do a good job.
Flap Wheels:
Not really certain of the purpose, except that they are aggressive, depending on the grit.
Any info that could be provided, or any links to vendors will be appreciated.
Cheers
Brett
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12th March 2014, 07:39 PM #2
My only minor and very minor suggestion Brett .
Is to place some cardboard on the wall behind your grinders .
Polishing metal with cloth wheels the polishing compound gets everywhere.
And makes a huge mess .
Just bin the cardboard every so often .
Note point to self do the same lol
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12th March 2014, 07:40 PM #3.
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I have a 6" jobbie and it seems to work OK. but I only use mine in a chuck on a WW lathe because I can control the speed, It just seems a bit too fast on a bench grinder.
Are they suitable for metal polishing or would a less expensive Calico mop be more appropriate?
Calico Mops:Are these suitable for timber? I think yes, but would a Swansdown be better?
Stitched Cloth:Near as I can see these are used for applying polish to metals, or do they have other uses?
Wire Wheels:I know what they're for, but don't seem to be able to turn up any that have solid brass bristles. Just brass plated, which appears to be a bit of a nonsense when there's some nice hard steel just under the surface.
I use mine for quickly cleaning up small welds, preping small bits of steel for welding, and they are great for cleaning up threads.
[QUOPTE]Scotchbrite: There seem to be a few copies around which are sigbificantly cheaper and by all accounts do a good job.[/QUOTE]
Metal work only
Flap Wheels:Not really certain of the purpose, except that they are aggressive, depending on the grit.
One of the most useful things that can be put on a bench grinder is a multitool linisher.
I've rigged mine so it can also be used as an unsupported
I use this more than any other wheel/mop/brush.
Note the small disc sander at the side as well.
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12th March 2014, 07:53 PM #4
Buffing mops should be used with an RPM between 1400 -1700 as you will burn the timber but I bet someone here gets away with it at higher RPMs. The forum sponsor sells swansdown mops of the highest quality. I would get the Beal mops from Carroll's wood supplies, I use them and would recommend the kit.
SBPower corrupts, absolute power means we can run a hell of alot of power tools
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12th March 2014, 08:02 PM #5
I've had one of these on my 8" grinder for about 4 years and it works a treat. Originally bought it for tidying up old Stanley planes but have used it on lots of things. Excellent at removing flight rust but beware, it will take off a 'patina' in no time flat. DAMHIKT. Leaves a shiny polished surface on just about any metal.
http://www.toolking.com.au/products/...HEEL-8%22.html
Much better price than the genuine Scotchbrite wheels. If you can even get them.
I like your idea for the unsupported belt on the multi-tool Bob. Is that a knife grinder belt? I think I need to set my 6" grinder up with a multi-tool.Those were the droids I was looking for.
https://autoblastgates.com.au
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12th March 2014, 08:37 PM #6
Thanks for the replies chaps. At least one of the grinders will be the new VicMarc ½speed jobbie. At 1500w and 1475 rpm I suspect that it will have plenty of grunt to drive mops etc which traditionally can suck the life out of the rpm due to increased load (having read Bob's thread on grinder loading a few days ago). Probably the smart way to go is to get the first Vicmarc and try it out with the various wheels for speed, load etc, and then make a decision on the second (which would then be either another Vicmarc, or the orange full speed jobbie that looks identical apart from the motor specs)
It seems to me that the number of ½ speed tasks exceeds the number of full speed tasks, and yet there is ONE ½ speed on the market again (but only since this week) and no one has thought about producing a variable speed grinder (or does the Universal motor make this difficult?).
So no other types of spinny things to consider?
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12th March 2014, 08:48 PM #7
Thanks Tony. How did you mount it though? It doesn't look like there's any hardware provided. Much cheaper than Scotchbrite. Shoulda got Adam to pu one in Bathurst - he was here this morning (finally took the BBQ away).
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12th March 2014, 09:08 PM #8
Multi-tool Linisher attachments:
eBay
Hare & Forbes (different to last link)
Alltools WA
Blackwoods (if you really want to deal with them )
And a thread on here.
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12th March 2014, 10:19 PM #9GOLD MEMBER
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What is the advantage of an unsupported belt?
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12th March 2014, 10:43 PM #10.
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Yep - sounds like a plan.
If you use it for metal it will then mark timber - I keep mine for timber. Yep, understood - would have 2 separate mops
I don't think you can drive the all brass wire wheels at grinder speeds. More grist to the mill for two ½speeds
I use mine for quickly cleaning up small welds, preping small bits of steel for welding, and they are great for cleaning up threads. Indeed, but again ½speed will probably suffice. Is it possible to get solid brass? I don't even know why they bother with the brass plate. It's gone within zip, leaving bare steel.
A Scotchbrite or similar wheel is much easier to use and does a better job.
NB The Scotchbrite I have does not leave a polished finish, it leaves a smooth burnished finish. I think it looks good on its own but its also the finish I use before metal bluing as the process is speeded up this way.
One of the most useful things that can be put on a bench grinder is a multitool linisher. Looks interesting. I did see this one at Hare & Forbes - full speed of course. But (cough) it's 500 nicker. Perhaps there's an after-market attachment I could add later.
Note the small disc sander at the side as well. Is that on the right side on the back wheel out of view?
It looks like a flap wheel on the left.
It seems to me that the number of ½ speed tasks exceeds the number of full speed tasks, and yet there is ONE ½ speed on the market again (but only since this week) and no one has thought about producing a variable speed grinder (or does the Universal motor make this difficult?).
There are some other types of wheels that can be used like felt, bristle type brushes for leather work, and leather on a aluminium substrate on a disc sander type arrangement.
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12th March 2014, 10:52 PM #11
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12th March 2014, 10:54 PM #12
Thanks very much Bob, lots of good info in there.
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13th March 2014, 12:00 AM #13
The tapered arbour (cone) will also take any of our Swansdown Mops they can be used for metal and timber the 150mm (6") buff is more than enough size for a 200mm grinder any bigger could create problems with being able to buff all around the work.
Warning: You definitely need to have 1 buff specifically for metal and one for timber, etc. You will not get the black out of the buff after using it on metal and it will be transposed onto timber if you try to buff with the metal impregnated buff.
I also used felt buffs loaded with jewellers rouge on the grinder cone, to polish carving tools and various metal pieces. The felt can be easily shaped to fit almost any tool pattern even down to the inside of small V tools, etc. I still have a tool head specifically set up for carving tools with a variety of inner and outer shapes moulded into the felt for use with carving tools, plane blades, chisels, turning tools, etc. Not often used these days but still an invaluable piece of equipment to have around.
Cheers - Neil
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13th March 2014, 05:46 AM #14
The Robson's wheel is more of a deburring wheel than a polishing wheel, although it's good at initial surface cleaning of chisels and the like. They fit the same way as hard grinding wheels. Depending on your spindle size you may have to bush them or drill out the bore a little. Excellent value!
Is the Robson's store still open in Lithgow?
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13th March 2014, 08:10 AM #15