Re: [EVGRAY] Dual rotor motorgen three coils row

Body

Thanks Warren, did you ever try zinc? I did try 303,304,316 and got mixed results.It may depend on manufacturing process..But it would work much better than aluminum if you could afford it!
   On Wednesday, August 22, 2018, 6:16:04 a.m. MDT, Warren Keillor [email protected] [EVGRAY] <[email protected]> wrote:  
 
     
Machinationus
You are sure right about keeping diamonds cool. The ones I have been using are just brazed to the steel tube hole saws. As soon as the bronze melts, the diamond is shed, leaving no cutting action.316L stainless is pretty non magnetic. You can do a very simple, and dramatically interesting test , yourself, if you have a sphereical neo magnet, and a selection of same size tubes, made out off different metals, and alloys.Just hold the tube vertically and drop the magnet down the tube.With aluminium, the eddy currents, will nearly stop the ball in the tube, which appears to float inside the tube when you look down counting the seconds it takes to fall a meter.With stainless 316 L , it drops as if you were using a ball bearing, inducing zero eddy currents.(and Lenz braking)Cheers Warren

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  On Tue, 21 Aug 2018 at 11:31 PM, machinationus [email protected] [EVGRAY]<[email protected]> wrote:       

If you are using Diamonds then use lots of coolant (water) Diamond's are not "forever"They need to be flooded with coolant and run low lower speeds. Then it works good.

CBN works the best for cutting steel or HighSpeedSteel..Stainless also doe's have a lot of Iron..
   On Saturday, August 18, 2018, 4:45:46 a.m. MDT, Warren Keillor [email protected] [EVGRAY] <[email protected]> wrote:  
 
     
Doug
Ow, what a difficult task, even so.I think a trip to the local friendly water jet guy is in order. Stainless steel cuts beautifully within a few thou.I like to be able to do everthing at home, but stainless complex shapes are hard on the machinery that I have. Stainless works well with magnets, being invisible to them, and plenty rigid.Your off the shelf fiberglas discs are sure rigid and non magnetic, but man, what a skill you have with a chisel..Perhaps cast custom fiberglas discs complete with holes?....Cheers Warren

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  On Sat, 18 Aug 2018 at 12:32 AM, [email protected] [EVGRAY]<[email protected]> wrote:       
Hi Warren
I tried them and the carbide metal cutting discs would eat them up. I would of needed 16 of them to eventually drill 16 holes...hammer and chisel then epoxy worked well but doubling number of magnets and pinching them into rotor best way to go. Very strong and simple and super flat
Kone
    
        
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