Language: 
To browser these website, it's necessary to store cookies on your computer.
The cookies contain no personal information, they are required for program control.
  the storage of cookies while browsing this website, on Login and Register.

GDPR and DSGVO law

Storing Cookies (See : http://ec.europa.eu/ipg/basics/legal/cookies/index_en.htm ) help us to bring you our services at overunity.com . If you use this website and our services you declare yourself okay with using cookies .More Infos here:
https://overunity.com/5553/privacy-policy/
If you do not agree with storing cookies, please LEAVE this website now. From the 25th of May 2018, every existing user has to accept the GDPR agreement at first login. If a user is unwilling to accept the GDPR, he should email us and request to erase his account. Many thanks for your understanding.
Amazon Warehouse Deals ! Now even more Deep Discounts ! Check out these great prices on slightly used or just opened once only items.I always buy my gadgets via these great Warehouse deals ! Highly recommended ! Many thanks for supporting OverUnity.com this way.

User Menu

Tesla Paper

Free Energy Book

Get paid

Donations

Please Donate for the Forum.
Many thanks.
Regards, Stefan.(Admin)

A-Ads

Powerbox

Smartbox

3D Solar

3D Solar Panels

DC2DC converter

Micro JouleThief

FireMatch

FireMatch

CCKnife

CCKnife

CCTool

CCTool

Magpi Magazine

Magpi Magazine Free Rasberry Pi Magazine

Battery Recondition

Battery Recondition

Arduino

Ultracaps

YT Subscribe

Gravity Machines

Tesla-Ebook

Magnet Secrets

Lindemann Video

Navigation

Products

Products

WaterMotor kit

Statistics

  • *Total Members: 83907
  • *Latest: Vi

  • *Total Posts: 524055
  • *Total Topics: 15602
  • *Online Today: 44
  • *Most Online: 103
(December 19, 2006, 11:27:19 PM)
  • *Users: 5
  • *Guests: 9
  • *Total: 14

Author Topic: Brass or copper spheres  (Read 12985 times)

Offline telluric42

  • Newbie
  • *
  • Posts: 20
Brass or copper spheres
« on: January 22, 2011, 06:52:05 AM »
Hi all :D

planning on building a Wimshurst Machine for some HV electrostatic experiments and finding it hard to find brass or copper balls for the end electrodes.

I'm in Australia, Melbourne. any tips would be great.



thanks
T42

Free Energy | searching for free energy and discussing free energy

Brass or copper spheres
« on: January 22, 2011, 06:52:05 AM »

Offline neptune

  • Hero Member
  • *****
  • Posts: 1127
Re: Brass or copper spheres
« Reply #1 on: January 22, 2011, 01:35:26 PM »
Been there , done that Use Brass doorknobs .For vey large ones , try the copper floats from old Ballcocks . Steel ball bearings will work  , or a plastic ball painted with a paint containg metal or carbon[mix your own ] Improvise!

Offline neptune

  • Hero Member
  • *****
  • Posts: 1127
Re: Brass or copper spheres
« Reply #2 on: January 22, 2011, 01:36:56 PM »
You can sometimes find brass balls on old decorative lamp fittings or chandeliers .

Free Energy | searching for free energy and discussing free energy

Re: Brass or copper spheres
« Reply #2 on: January 22, 2011, 01:36:56 PM »
Sponsored links:




Offline TinselKoala

  • Hero Member
  • *****
  • Posts: 13968
Re: Brass or copper spheres
« Reply #3 on: January 22, 2011, 02:32:33 PM »
Cabinet knobs for the small ones; keep looking, you will find ball knobs in the "better" builder's supply houses.

Larger ones can be doorknobs.

Those Chinese "exercise balls" that have chimes inside and come boxed in pairs--- these are cast iron with a nice chromeplated surface and can be easily drilled and tapped to accept a mounting screw. They also come in a few different sizes and are cheap.

Ball Bearing balls are hardened and much more difficult to drill, but conductive epoxy can be used for mounting.

Tank floats can be had in larger sizes, made of steel or sometimes copper. I have also used copper toilet tank floats, but they have sharp edges that need to be taken care of.

I have not had good luck with conductive paints on nonconductive spheres. They seem to leave a rough surface, and can also burn or spall off in little points as a discharge happens.

But: You can get styrofoam spheres in all different sizes from craft stores, and cover them with aluminum duct tape, carefully smoothed so as to not leave sharp corners or edges on the tape.

Offline ramset

  • Hero Member
  • *****
  • Posts: 7257
Re: Brass or copper spheres
« Reply #4 on: January 22, 2011, 02:47:48 PM »
Telluric42
A suggestion ,
Brush plating ,If Tinfoil works [but smooth] brush plating could be an option,I make a very simple machine that I sell for Brush plating of  Nickle copper Gold etc...........
Rediculously simple to do ,if you can find nice Shiney chrome plated spheres ,strip the Chrome off  w/reverse polarity mild acid or base solution,and replate copper nickle gold ,whatever?,Takes Milli amps to do.
Google brush plating ,call some local vendors for "Samples"
You be plating in no time!!
And it will at least look beautiful!!
Or you can buy Silver paints {real silver}
And plate over those
Or try the foil?

Chet

Free Energy | searching for free energy and discussing free energy

Re: Brass or copper spheres
« Reply #4 on: January 22, 2011, 02:47:48 PM »
Sponsored links:




Offline TinselKoala

  • Hero Member
  • *****
  • Posts: 13968
Re: Brass or copper spheres
« Reply #5 on: January 23, 2011, 08:32:58 PM »
Telluric, if you are making your machine as a HV source for real research and not just for looks and nostalgia, a Bonetti machine will be far better and much easier to build than a classic Wimshurst. The Bonetti machine is nearly identical to the Wimshurst but uses plastic discs with NO metallic sectors. It turns out that the sectors actually decrease the available voltage and current by providing many edges where field strength is high and corona blows away charge.
The sectorless Bonetti machine stores charge on the surfaces of the dielectric disks and can reach much higher voltages and currents than the standard Wimshurst machine.
http://www.youtube.com/watch?v=yYGFqkXjwZc
http://www.youtube.com/watch?v=ir9RIsXzmzY

Offline telluric42

  • Newbie
  • *
  • Posts: 20
Re: Brass or copper spheres
« Reply #6 on: January 24, 2011, 12:40:39 AM »
thanks all this is all good stuff  :D.....i agree with you TinselKoala the sector-less machine will give me more grunt i will consider building both as i do like the look with sectors. interesting how it always comes down to sharp edges (losses).

cheers


Free Energy | searching for free energy and discussing free energy

Re: Brass or copper spheres
« Reply #6 on: January 24, 2011, 12:40:39 AM »
Sponsored links:




 

OneLink