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6th April 2013, 10:53 PM #76
I hate to spoil the joy of watching your grinder spin for a week after you turn it off but if it spins for so long the bearings are probably on the way out and may start to grumble soon.....Put some new ones in (as i did last year with my Grandfathers 35 yr old A&A, cost was less than $20) and you will find they don't spin for that long.
1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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6th April 2013 10:53 PM # ADSGoogle Adsense Advertisement
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7th April 2013, 06:52 PM #77Intermediate Member
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Sorry Greg to say that they have not closed down the machine shop at all in fact you have to drive past there factory to get to the shop off clayton road
Note for all Australian companies that manufacture products for defence they still must be manufactured here and yes there heavy track wheels are still made in that factory
( was watching the machining centre being tool changed last week 100 slot carousel)
Bruce
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9th April 2013, 11:01 PM #78
Ueee! you are thinking of the wrong GMF bench grinder.There are industrial models and home handy bloke models.
There is a difference you know!
Not the yellow one.
The big ugly green one with cast iron rests mounted on the cross rod.GMF Senior Mk 5 model
To paraphrase Crocodile Dundee
Thats not a grinder-THIS! is a grinder.ARRGH! ARRGH! -makes Tim the Toolman Taylor noise."Isn't that right Al?
The many I have come across in my teaching career typically run on for minutes on end.Smooth as silk ,not worn.
They have stood abuse by generations of students and still come up trumps.
Ugly as sin but built like a brick dunny. I will quite happily part with $150 or so for a good one.
Grahame
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9th April 2013, 11:35 PM #79Dave J Guest
I agree a nicely balanced quality grinder will take a long time to spin down. Even my 25 year old grinder with new bearing a few years back has always taken a while.
With a multi tool on them it would slow a lot quicker.
The rotating dressers clean the wheels up quick and open the grain again, then dress them with a diamond dresser.
Dave
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9th April 2013, 11:38 PM #80GOLD MEMBER
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This is mine. I'll move the wide green wheel to the left and put the Multitool on the right.
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10th April 2013, 12:10 AM #81Dave J Guest
Thats a nice grinder you have there.
Dave
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10th April 2013, 08:18 PM #82SENIOR MEMBER
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Prompted by the discussion here I took another look at my Multi-tool, and the vibration and runout were worse than I'd realised. I finished up dialling in the belt crown in the 4 jaw, boring out the bushing and replacing with a brass one, then making a dummy arbour and truing up all the machined surfaces. It was better but still not great. With everything running relatively true the only thing was the balance, and I managed to balance it with about 10 grams. I could have played with it further to get it smoother, but have run out of time. For those having vibration issues it would be worthwhile checking the balance.
Pete
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10th April 2013, 09:09 PM #83GOLD MEMBER
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I bought mine today and started fitting it tonight. The shaft on my grinder is so long I'm going to have to make a 10mm long spacer to fit between the grinder and the pulley. Otherwise the shaft sticks out the end and prevents the disc sander plate from being fitted. I can live with that. It's a big ask expecting an accessory to fit every conceivable grinder without modification.
However, I'm a bit worried about the fit of the pulley on the grinder shaft. The instructions say to twist the pulley onto the shaft in a clockwise manner while holding the grinding wheel on the opposite side. This implies a tight fit. In fact, the pulley is sloppy on the shaft. The shaft measures 15.85mm (5/8"). At this stage I don't know whether the sloppy fit will be a problem once the nut is tightened up. I does imply poor tolerance on the boring of the pulley though. I might have to bore out the pulley and fit a sleeve like Pete has.
Chris
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11th April 2013, 04:41 PM #84GOLD MEMBER
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I finished fitting mine today. I was able to get the runout down to 0.1mm by tapping the pulley into position. There was no discernible vibration without a belt fitted. Fitting a belt increases vibration, but it varies a lot with different belts. I'm using the blue belts. Some seem to run more true than others.
I'm happy with my Multitool. For $220 I reckon it's a worthwhile addition to the grinder. I had to substitute four 1/4" mounting screws for longer ones and make up a 10mm wide spacer because of the length of my grinder shaft. The sloppy fit of the pulley on the grinder shaft doesn't seem to effect performance once the pulley is centred and the nut is tightened.
If you are having trouble with the belt not centring on the pulley, I found that very small adjustments between the arm and the grinder bracket (2 bolts) have a large effect on where the belt rides on the pulley. If you're not sure what I mean I'll post a photo.
Chris
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11th April 2013, 07:45 PM #85Pink 10EE owner
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One thing about belts a person that worked most of their life at Norton told me was the belts with the 45 degree join can be run either direction...
Light red, the colour of choice for the discerning man.
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