Sourcing an 8" x 40mm 80-100 grit white wheel?

[rsser]

Have looked at online w/t suppliers without success.

Maybe your search skills are better than mine.

Or else where in Melb. might I pick up such a wheel?

Help appreciated.

[Grumpy John]

http://www.totaltools.com.au/icat/pdf.php?id=205

I know they only go up to 25mm wide, but they may be able to get one in for you.

http://www.warburtons.com.au/resources/Abrasives.pdf

Warburtons are out my way, not far from Hare & forbes, I could pick one up for you Ern

[rsser]

A pick up from Warburton's would be very kind GJ.

Add it to my tab ;-}

... and following your phone advice have asked the local Total Tools if they can get one in.

[jmk89]

Maybe Northwood (http://www.northwoodtools.com.au/product.asp?pID=949&cID=442)could find one - their generic 25mm wheels are pretty good

[Jim Carroll]

Ern most 8" wheels are 25mm we have one at 40mm width but is only 60 grit.
http://www.cws.au.com/cgi/index.cgi/shopfront/view_product_details?category_id=1107144917&product_id=1107452807

We have asked our supplier if they can make a finer wheel and the last reply we had was they will look into it.

We will keep nagging them.

[Manuka Jock]

Ern ,
how would it go do ya reckon , with two 20mm wheels on ?
If it worked as a test , maybe they could be 'glued' together with some sort of appropriate adhesive .

[DJ’s Timber]

Ern ,
how would it go do ya reckon , with two 20mm wheels on ?
If it worked as a test , maybe they could be 'glued' together with some sort of appropriate adhesive .

:o :censored2: :yikes:

[dai sensei]

Ern, also make sure it has the right center dia, and rebate for your grinder fixing

[rsser]

Thanks guys.

Jim, yeah, think I saw one of yours at the show.

Jock, you are one shock jock!

Geez, think of what the glue would do in use or in truing? Though I spose I could keep the glue well away from the useable face. That said, the spindle's not long enough!

Neil, good point. I always assume they'll be 5/8 but I should check.

[Manuka Jock]

Thanks guys.

Jim, yeah, think I saw one of yours at the show.

Jock, you are one shock jock!

Geez, think of what the glue would do in use or in truing? Though I spose I could keep the glue well away from the useable face. That said, the spindle's not long enough!



Well , if the manufacturers don't have the stones to do it ....... :D


Aren't ceramic adhesives are used on grinding wheels ?

[texx]

please dont put 2 wheels together.
about 5 or 6 years ago i turned on an old grinder that was in this building when i bought it but i had never used it.
anyway some one had put a wheel on without the paper backing disc ( old wheel or damaged i dont know ) but all i did was turn the thing on and bang , the wife came out to see what the racket was and i was just standing there with my mouth open looking kind of off white to gray colour as i looked at the hole in the iron wall 3inches from my head where a large chunk of the wheel had gone straight through at about 4 times the speed of light it is probablly still in orbit to this day.
from then on i always check grinding and or cutting wheels to make sure they have the paper clutch disc on them , it only takes a tiny crack in the wheel from not being fitted right and all hell breaks loose .
now shall i tell you about the time i was cutting a 45kg gas bottle open with the old 9 inch angle grinder , nah i'll save that story for later , that one brought the mrs up into the shed for a look too .
and there was the time with the just razor sharpened axe . i have 65 stitch scar as proof of that one :2tsup:
i have a dozen others but i'll save some for ron starting to hurt thinking about them

[Jim Carroll]

Texx after reading your reply I think I will steer very clear of you.

Are you an accident waiting to happen or an accident happening:D

[Calm]

TEXX there are products specifically for your type of person :D:D:D

Life and accident insurance
Income protection insurance
Sickness benefits
Workcover
sickpay

Not sure about old age pension.:doh::q:no:

Seriously i hope things improve and dont invite me over.

Then again a turnfest at Texx's could be interesting to see who was game to turn up.:D:D

Cheers

[texx]

Texx after reading your reply I think I will steer very clear of you.

Are you an accident waiting to happen or an accident happening:D


nah mate i am pretty sure i am not accident prone ( i have a bro inlaw that is though )
its just that i take risks , and i always through need have to do things on the cheap ,
i am 53 and always messed around in a workshop of some type worked manually with my hands all my life do all my own mechanical work and so on .most of the time if i need some thing i build rather than buy it
now to me the law of averages is if you work in an office and only muck about with tools part time then you are going to have less drama's and you would tend to be more careful than some one who is continually grubby and always has dirty finger nail's . complacency and in a hurry :roll:. funny though i often see accidents before they happen then decide if i'll take the chance and normally do .
anyway i'm off to fire up the chain saw see ya :oo::no::2tsup:

[rsser]

Got your Kevlar chaps on??

[rsser]

We have asked our supplier if they can make a finer wheel and the last reply we had was they will look into it.

We will keep nagging them.

Thanks Jim.

Bit odd to have two wheels on the market in those dimensions: 60 grit white wheel and 54 grit BlueMax, but nothing finer.

[texx]

Got your Kevlar chaps on??


dont own any
i have never even seen any out here where we are using chainsaws every week on farm fencing and so on never seen anyone wear em.
many years back i worked in the bonshaw sawmill for about 2 years as the docker and no body had them then either not even the 2 bush crews that did the felling how ever i think that has changed now and they have to be worn in state forests.

[Ed Reiss]

Texx...you know those "battle" scars are a plus with the ladies!:2tsup:

[rsser]

Question is, in this context, is his missus a 'lady'? :U

[Robomanic]

...
now to me the law of averages is if you work in an office and only muck about with tools part time then you are going to have less drama's and you would tend to be more careful than some one who is continually grubby and always has dirty finger nail's . complacency and in a hurry :roll:. funny though i often see accidents before they happen then decide if i'll take the chance and normally do .
anyway i'm off to fire up the chain saw see ya :oo::no::2tsup:

I too have grown up in workshops (on the farm) but now work as an Engineer amongst others who have had a more 'sheltered' upbringing. I cringe when others around the office go near tools. The look they get in their eye when they pick up the battery drill is something else. :doh:

My boss was screwing a flat-pak cupboard together a while back and getting right into it. Couldn't help myself so I figured I'd help him.....

by putting one of every size screw in my pocket :D

I still work there.... :U

[Robomanic]

Oh and on the topic of white wheels,

I bought a 100 grit from the tool suppliers near me, (25mm wide) it does glaze over a little and I get grey streaking on the face. A quick touch with the dressing stick brings it up again, and I am assuming it is just getting a bit clogged and this is normal. It was only $25 so would you say that the more expensive ones would clog less?

[rsser]

No.

One of the variables is bond hardness. A soft bond allows the grains to break away exposing new sharp edges, and taking the steel particles away with them.

I had an exxy ruby wheel but it tended to clog quicker than my white wheel.

[Grumpy John]

Back on topic :D:D.
Ern, have you managed to source a 40mm wide wheel yet? I've checked all the suppliers I can think of and nothing listed as available. Did you have any luck contacting Norton direct?

[rsser]

Thanks GJ. No, I've not had any luck but am following a US lead Gil emailed me but I suspect that there as here 60 grit is the finest that's made.

[texx]

3M site

http://products3.3m.com/catalog/au/en005/utilities_telecom/telecom_mro/node_GSCDBPLWL7gs/root_D58K9TX3VWgv/vroot_RCR2RLBZPMge/bgel_VP5B5NHKTPbl/gvel_0JVMLMWX7Dgl/theme_au_utiltelecommro_3_0/command_AbcPageHandler/output_html


pdf brochure


http://multimedia.3m.com/mws/mediawebserver?66666UuZjcFSLXTt5xT_4xs6EVuQEcuZgVs6EVs6E666666--

[rsser]

Thanks Texx ... but it's a bench grinder wheel I'm chasing, not a surface conditioning wheel.

[texx]

sorry thought some of those were , the one on page 14 looked like grinding i should of read it me thinks

[texx]

been searching for over an hour cos now i'm interested . the only wide ones i can find are in 10 inch dia , that would be a challenge cutting one down to 8 inch on the bandsaw.:C:o:no::~

[Grumpy John]

been searching for over an hour cos now i'm interested . the only wide ones i can find are in 10 inch dia , that would be a challenge cutting one down to 8 inch on the bandsaw.:C:o:no::~

You could always mount it on the lathe and dress it down to size. :tempted:

[NeilS]

Aren't ceramic adhesives used on grinding wheels ?

Well, yes Jock, if you are referring to the bonding agent, which is then fired to very high temperatures (like 1200c/2200f) in an electric arc furnace, or similar. Sounds a bit specialised to me.

Neil

[tea lady]

Well, yes Jock, if you are referring to the bonding agent, which is then fired to very high temperatures (like 1200c/2200f) in an electric arc furnace, or similar. Sounds a bit specialised to me.

Neil

:hmm: Looks at kiln. Looks at pottery wheel. Looks at alumina sand bucket. Wonders what the recipe is. :rolleyes:

[Manuka Jock]

Well, yes Jock, if you are referring to the bonding agent, which is then fired to very high temperatures (like 1200c/2200f) in an electric arc furnace, or similar. Sounds a bit specialised to me.

Neil

Aye Neil , I was havin' a bit of craic with Ern ,
putting him on . "can't find a 40 mm wheel ? use two 20 mm ones "

ya ken ?

[texx]

38mm not what i would call cheap these things maybe would get a discount for a pallet buy

http://cgi.ebay.com.au/3-Diamond-Grinding-Wheels-8-x1-1-2-80-120-220-grit_W0QQitemZ370108235245QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item370108235245&_trksid=p3286.c0.m14&_trkparms=66%3A2|65%3A1|39%3A1|240%3A1318

[rsser]

Nice find texx. If the exchange rate was back up to 96 c US that price wouldn't be too bad.

Diamond coated wheels are also around for Tormeks btw.

Anyway, Gil's been researching too to better effect than me. In the US too it seems 60 grit is the finest.

[rsser]

Just stumbled on a reference on the Vermec site to 80 grit pink wheels being available in 200 x 40.

[NeilS]

:hmm: Looks at kiln. Looks at pottery wheel. Looks at alumina sand bucket. Wonders what the recipe is. :rolleyes:

And TL, you can 'throw' them whatever shape and width takes your fancy...:)

Neil

[NeilS]

Aye Neil , I was havin' a bit of craic with Ern ,
putting him on . "can't find a 40 mm wheel ? use two 20 mm ones "

ya ken ?

Aye, but why let a chance go by to bang the safety drum. Your joke was taken for what it was by quite a few members of the forum but just in case the safety point wasn't made sufficiently clear to others, I thought I would give it a bash (not you)... :-

Neil

[tea lady]

And TL, you can 'throw' them whatever shape and width takes your fancy...:)

NeilSo what is the bonding agent? Are they really fired in a kiln? I would have thought that would make the surrounding stuff of the wheel harder than the alumina, cos silica would be the bonding agent and its harder than alumina isn't it?

Actually, Just went and looked at wiki entry about Mohs Scale of hardness (http://en.wikipedia.org/wiki/Mohs_scale_of_mineral_hardness), and Alumina is harder than Silica. So, I''ll admit it. I was wrong.:C But I'll get over it.:D

[Manuka Jock]

Aye, but why let a chance go by to bang the safety drum. Your joke was taken for what it was by quite a few members of the forum but just in case the safety point wasn't made sufficiently clear to others, I thought I would give it a bash (not you)... :-
Neil

Lighten up lad .

[tea lady]

Lighten up lad .

This is not the joke thread.:rolleyes: We is having a serious conversation.:p Haven't you found the Friday thread yet?:D

[Manuka Jock]

So what is the bonding agent? Are they really fired in a kiln? I would have thought that would make the surrounding stuff of the wheel harder than the alumina, cos silica would be the bonding agent and its harder than alumina isn't it?

Actually, Just went and looked at wiki entry about Mohs Scale of hardness (http://en.wikipedia.org/wiki/Mohs_scale_of_mineral_hardness), and Alumina is harder than Silica. So, I''ll admit it. I was wrong.:C But I'll get over it.:D


TL ,

A recipie ;

"Mixing the ingredients

Preparing the grinding wheel mixture begins with selecting precise quantities of abrasives, bond materials, and additives according to a specific formula. A binder (http://www.answers.com/topic/binder), typically a water-based wetting agent in the case of vitrified wheels, is added to coat the abrasive grains; this coating improves the grains' adhesion (http://www.answers.com/topic/adhesion) to the binder. The binder also helps the grinding wheel retain its shape until the bond is solidified. Some manufacturers simply mix all materials in a single mixer (http://www.answers.com/topic/mixer). Others use separate steps to mix abrasive grains with binder. Wheel manufacturers often spend considerable effort to develop a satisfactory (http://www.answers.com/topic/satisfactory) mixture. The blend must be free-flowing and distribute grain evenly throughout the structure of the grinding wheel to assure uniform cutting action and minimal vibration (http://www.answers.com/topic/vibration) as the wheel rotates during use. This is particularly important for large wheels, which may be as big as several feet in diameter, or for wheels that have a shape other than the familiar flat disk.
and is this on firing ;


"Firing

Generally, the purposes of the firing are to melt the binder around the abrasives and to convert it to a form that will resist the heat and solvents encountered during grinding. A wide range of furnaces and kilns are used to fire grinding wheels, and the temperatures vary widely depending upon the type of bond. Wheels with a resin bond are typically fired at a temperature of 300 to 400 degrees Fahrenheit (149 to 204 degrees Celsius), and wheels with vitrified bonds are fired to temperatures between 1700 and 2300 degrees Fahrenheit (927 to 1260 degrees Celsius)."
http://www.answers.com/topic/grinding-wheel-1

[NeilS]

So what is the bonding agent? Are they really fired in a kiln? I would have thought that would make the surrounding stuff of the wheel harder than the alumina, cos silica would be the bonding agent and its harder than alumina isn't it?

Actually, Just went and looked at wiki entry about Mohs Scale of hardness (http://en.wikipedia.org/wiki/Mohs_scale_of_mineral_hardness), and Alumina is harder than Silica. So, I''ll admit it. I was wrong.:C But I'll get over it.:D

Manuka Jock's posting covers the general concept, but I reckon for the relatively low cost (about $50) you pay for a wheel would hardly cover your kiln firing costs, let alone the ingredients, etc.. unless you just slipped it in with the next batch of tea cups, TL...:)

I would have also had to go and look up my reference on Mohs scale to see if Alumina was harder than Silica, but I do know from experience that the higher the proportion of alumina to silica in kiln bricks the more refractory they are. My best alumina bricks are rated at 1750c, about 42% alumina if I remember correctly.

Neil

[tea lady]

Manuka Jock's posting covers the general concept, but I reckon for the relatively low cost (about $50) you pay for a wheel would hardly cover your kiln firing costs, let alone the ingredients, etc.. unless you just slipped it in with the next batch of tea cups, TL...:)
Neil

Yes! You are prolly right. Although materials probably wouldn't cost that much, the R & D might take a while.:rolleyes:

[Calm]

So what is the bonding agent? Are they really fired in a kiln? I would have thought that would make the surrounding stuff of the wheel harder than the alumina, cos silica would be the bonding agent and its harder than alumina isn't it?

Actually, Just went and looked at wiki entry about Mohs Scale of hardness (http://en.wikipedia.org/wiki/Mohs_scale_of_mineral_hardness), and Alumina is harder than Silica. So, I''ll admit it. I was wrong.:C But I'll get over it.:D

Quick ring the president, ring the firebrigade,police, 000, the news hounds,media, the paparazzi just ring someone

- we have a first

the Lady ADMITED I WAS WRONG


















sorry couldnt help but get excited - at 52 you can still get firsts, :D:D:D:D:;:;

[tea lady]

Quick ring the president, ring the firebrigade,police, 000, the news hounds,media, the paparazzi just ring someone

- we have a first

the Lady ADMITED I WAS WRONG


















sorry couldnt help but get excited - at 52 you can still get firsts, :D:D:D:D:;:;

I thought I'd try it just once to see what it was like.:D

Now stop it Calm. I'm trying to convince Manuca Jock that this is a serious discussion.:rolleyes:

[Manuka Jock]

I thought I'd try it just once to see what it was like.:D

Now stop it Calm. I'm trying to convince Manuca Jock that this is a serious discussion.:rolleyes:

what is Manuca :U

Manuka , and it's relation Kanuka , are hardwood trees , commonly know as 'tea trees' , due to the settler practice of mixing the tree leaves with the tea leaves , to make then go further.
The tree leaves can have have a sleep inducing effect

[Cliff Rogers]

Just stumbled on a reference on the Vermec site to 80 grit pink wheels being available in 200 x 40.

I got mine from Gary Pye.
http://gpwoodturning.sitesuitestores.com/cgi/index.cgi/shopfront/view_by_category?category_id=1107133415

I now have a 54 Grit Blue Max on one end & an 80 Grit Pink wheel on the other end.

I modified/copied my grinding jig holder so I now have the same set up under each wheel.
The whole story is here (http://www.woodworkforums.com/showthread.php?t=37459).

I use the Blue Wheel to change the shape of a tool & the Pink on to sharpen it.