The Ebony Warrior. magnetic tonearm made in Huddersfield UK

Hi A bit of a side issue I have no means of mounting a 12 inch arm on my lp12, so I have had to look for an alternative without breaking the bank.
Found a vintage direct drive unit on eBay when it eventually arrived from Japan it turned out to run on 120volts so I then had to wait for a transformer just to see if it worked which it does and very well especially for a piece of fifty year old kit.
I have now set about designing and building a plinth with a means of quickly changing the tonearm see photos of progress so far.
 

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Nice work. I see you've hit the problem I did when making rotating lignum vitae handles for the handwheels on my lathe - unexpected/hidden internal voids. It took three goes before I had a tail stock handle without a void. Balls. I'm now half way through my second ancient bowling ball (have four more, though). It's lovely stuff to machine (and smells nice). I've now fitted rotating lignum vitae handles to coil winder and to Leytool hand drill. Nice tools = nice work.

If you go for a larger diameter arm tube, you could use the gunsmith technique of fitting a rotating boring bar between head stock and rotating centre in tail stock and clamp the work to the saddle to bore. Never done it myself, mind.
 
Hello again today I finished off the new turntable see photo and then spent some time on my patent application, the problem being I have no real idea how the bearing does what it does. The basic idea seems so simple and just plain obvious that it was hard to believe it was not already out there, but no, and the more I try to work out how it really works on a fundamental level the more elusive it becomes. some mathmaticians are going to have a field day explaining this one.
 

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@bob.hann

Regarding the patent, I would suggest you think carefully as the current market is characterized by reverse engineering and the consequent cloning/copying of any software or hardware or idea and "possible" court cases would be long, expensive and with an extremely uncertain outcome.
Today, in my opinion, a patent only makes sense for a small number of objects and only for large companies that are already introduced in a specific market and could possibly bear the high costs.
I would focus more on the originality of the finished product and brand name which can make your product stand out immediately against any eventuality.
Just my opinion. :)
 
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Please keep in mind that reading your way of writing characters is tiring in reading for some (me too) and what's more it's not very nice (if no one does it there must be a reason, right?) and also the forum rules if I remember well they mention the inappropriateness of it.


P. S.: IMO Whatever you discovered or invented if it has a market value will be copied (if it is copyable) the same day someone intercepts a sales value of it (if any).
And this applies to anyone, even large companies (which you are not).
 
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Hi a couple more tiny steps forward, stripping 36awg is a problem without specialised kit with my earlier attempts I used a scalpel umde the binocular microscope and it took an age this was because a friend in electronics had told me that stripping a tool for wires that small would be very expensive, but lately I found a second hand one on Huddersfield market for 50p and amazeingly it works.
All the conectors have to be turned and most of them slit with a o.6mm cliting wheel, it all takes a lot of time and if you drop one the chance of finding it are slim, the next step is to gold plate the balance weights not totally necessary but a nice finishing touch.
 

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