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8th March 2013, 03:40 PM #1SENIOR MEMBER
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WorkSharp 3000 - anyone who knows about electricty?
Hi
I am thinking of purchasing a WorkSharp 3000
Work Sharp 3000 Wood Tool Sharpener | Work Sharp Tools
My issue is this:
Carbatec's price
Work Sharp™ System : CARBA-TEC
Amazon's Price
Work Sharp WS3000 Wood Tool Sharpener - Amazon.com
All I can say is wow, the difference in price is ludicrous.
I was going to buy a step down tranformer as it is 110v.
I emailed the manufacturer and they said basically in a nutshell that it would kill it and that I would have no warranty if buying from outside the US.
Can anyone who knows about motors and electricity please tell me if this is the truth, ie that I would probably blow the thing up.
For a small difference in price I will always buy Australian and support businesses here but that price difference is shocking.
Look forward to any advice.
Cheers
Arry
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8th March 2013, 04:25 PM #2Retro Phrenologist
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The first problemthat you will need to get around is that Amazon won't ship that to Australia. You will needto find another supplier or ship to a middleman.
____________________________________________________________
there are only 10 types of people in the world. Those that understand binary arithmetic and those that don't.
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8th March 2013, 04:28 PM #3SENIOR MEMBER
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The voltage is not the only consideration. But the step doen would need to be overrated for starting current and as well, it would need to be continous rated. Not a DIY.
But the yanks don't just run 110volt, they also run at 60hertz frequency, tho I am not sure of this. We run at 50 hertz and over time this would do the machine no good at all.
Greg
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8th March 2013, 04:36 PM #4Retro Phrenologist
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You could try getting it from here...
from Rutlands.co.uk
It should be 220 v 50 hz and
it's still about half the price of carba tec____________________________________________________________
there are only 10 types of people in the world. Those that understand binary arithmetic and those that don't.
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12th March 2013, 03:26 PM #5SENIOR MEMBER
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12th March 2013, 03:27 PM #6SENIOR MEMBER
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12th March 2013, 03:34 PM #7SENIOR MEMBER
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I am not a motor winder. I am an electrician and did my time in industrial.
My best guess is that, the motor alone, the steel core laminations in both the rotor and the carcass would start to 'chatter' and overheat. This may not be initially apparent.
The Electronics ... I can only guess at.
However, you could call the manufacturer ... They have already said it would 'kill it'. But you did not ask them why. I would ask them if it is not so much a voltage problem as a frequency problem. They may just be covering their ####, as they have contracts with local distribution agents.
I would question them as to exactly why it would 'kill it'.
If the frequency is not a problem then I would probably go for it ... but you will flying without a warranty ... but for a few 100 bucks does that matter so much ? chances are it won't break down at all.
cool bananas ... greg
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12th March 2013, 04:18 PM #8SENIOR MEMBER
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By the way Arry ... I don't think Carbatec is ripping you off.
It is just the economy of scale. It costs the same price to manufacture the motor at 110v/60hz as it does at 240v/50hz.
But the difference is that there are 30 times the amount of woodworkers/metalworkers DIYs to defray the costs in the states as there are here.
Anyway ... Here is any OZ supplier that has five different manufacturers Industrial Tool and Machinery
good luck ... Greg
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12th March 2013, 06:36 PM #9SENIOR MEMBER
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I am happy to say that Carbatec have written to me and the price was an error on the website.
They were not trying to rip anyone off or anything, amended price is $399.
Cheers
Arry
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14th April 2013, 07:12 PM #10Hewer of wood
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Just as an endnote, I like the WS system but have got their discs and abrasives and mounted them on an arbour on the lathe.
Would work as well on a pedestal drill.
Obviously this is just for freehanding and I've used the setup for flattening and polishing blade backs.
Have now moved on to the Sorby ProEdge system. A lot more bucks but also a lot more applications.Cheers, Ern
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23rd April 2013, 12:07 AM #11Senior Member
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- Brisbane
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Hi Arry,
If I'm not too late to chime in on the frequency problem, I'd say that the change in frequency will be an issue. As I understand it an electric motor presents a very small impedance to current flow unless it is operating at it's rated speed. Changing the frequency significantly changes the speed and therefore the impedance.
In layman's terms impedance is the resistance in an (inductive or capacitive) AC circuit. Electric motors don't have any till they are spinning and under power. Basically each time the supply changes polarity (from positive to negative or vice versa) the magnetic field inside the motor from the previous cycle collapses and opposes the new rising magnetic field. This is what limits the current used by the motor. Changing the frequency will cause increased current flow and the motor will overheat. It wasn't always this way. But motors are produced to such tight tolerances these days, there's no margin anymore...
If there are electronics attached to this machine, it's likely that some of the components will fail due to the frequency change too. Anything with a coil in it will suffer as described above as will some types of capacitor.
You'll let the smoke out. Well, that's my understanding anyway...