If you need assistance, please send an email to forum at 4hv dot org. To ensure your email is not marked as spam, please include the phrase "4hv help" in the subject line. You can also find assistance via IRC, at irc.shadowworld.net, room #hvcomm.
Support 4hv.org!
Donate:
4hv.org is hosted on a dedicated server. Unfortunately, this server costs and we rely on the help of site members to keep 4hv.org running. Please consider donating. We will place your name on the thanks list and you'll be helping to keep 4hv.org alive and free for everyone. Members whose names appear in red bold have donated recently. Green bold denotes those who have recently donated to keep the server carbon neutral.
Special Thanks To:
Aaron Holmes
Aaron Wheeler
Adam Horden
Alan Scrimgeour
Andre
Andrew Haynes
Anonymous000
asabase
Austin Weil
barney
Barry
Bert Hickman
Bill Kukowski
Blitzorn
Brandon Paradelas
Bruce Bowling
BubeeMike
Byong Park
Cesiumsponge
Chris F.
Chris Hooper
Corey Worthington
Derek Woodroffe
Dalus
Dan Strother
Daniel Davis
Daniel Uhrenholt
datasheetarchive
Dave Billington
Dave Marshall
David F.
Dennis Rogers
drelectrix
Dr. John Gudenas
Dr. Spark
E.TexasTesla
eastvoltresearch
Eirik Taylor
Erik Dyakov
Erlend^SE
Finn Hammer
Firebug24k
GalliumMan
Gary Peterson
George Slade
GhostNull
Gordon Mcknight
Graham Armitage
Grant
GreySoul
Henry H
IamSmooth
In memory of Leo Powning
Jacob Cash
James Howells
James Pawson
Jeff Greenfield
Jeff Thomas
Jesse Frost
Jim Mitchell
jlr134
Joe Mastroianni
John Forcina
John Oberg
John Willcutt
Jon Newcomb
klugesmith
Leslie Wright
Lutz Hoffman
Mads Barnkob
Martin King
Mats Karlsson
Matt Gibson
Matthew Guidry
mbd
Michael D'Angelo
Mikkel
mileswaldron
mister_rf
Neil Foster
Nick de Smith
Nick Soroka
nicklenorp
Nik
Norman Stanley
Patrick Coleman
Paul Brodie
Paul Jordan
Paul Montgomery
Ped
Peter Krogen
Peter Terren
PhilGood
Richard Feldman
Robert Bush
Royce Bailey
Scott Fusare
Scott Newman
smiffy
Stella
Steven Busic
Steve Conner
Steve Jones
Steve Ward
Sulaiman
Thomas Coyle
Thomas A. Wallace
Thomas W
Timo
Torch
Ulf Jonsson
vasil
Vaxian
vladi mazzilli
wastehl
Weston
William Kim
William N.
William Stehl
Wesley Venis
The aforementioned have contributed financially to the continuing triumph of 4hv.org. They are deserving of my most heartfelt thanks.
Registered Member #2431
Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
Has there been any attempt to use gold or silver leaf to control field geometry? I couldnt find any using google or our internal search. I had a real hard time with the roofing copper seen in my HV probe.
When i tried graphite powder, it seemed non-uniform, and messy, as in things becoming conductive that werent supposed to be.
Registered Member #133
Joined: Fri Feb 10 2006, 10:27PM
Location: Pensacola, Florida
Posts: 47
I haven't used metal leaf for field geometry modification, but have found that India Ink works well to coat some items used in electrostatic experiments.
Registered Member #2431
Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
im going to try it, since it seems cheap. with a 3D printer, and leafing we could make previously impossible shapes work, or parts just to difficult to be practical. I had cap plates and EMI shielding that were hard in my HV probes.
Registered Member #834
Joined: Tue Jun 12 2007, 10:57PM
Location: Brazil
Posts: 644
Ash Small wrote ...
I don't want to go too far OT, but is it possible to 'print' low value HV capacitors?
In principle yes, as conductive plastics are also available (ok for low current). It's then possible to print complex electrostatic circuits, including mobile parts (as electrostatic generators and motors). But by what I have seen, the insulation obtainable with 3D-printed plastics is not specially high.
Registered Member #54596
Joined: Fri Mar 06 2015, 11:31AM
Location:
Posts: 19
mikeselectricstuff wrote ...
I wonder if this might be interesting for electrostatic purposes - copper patterned PET film :
Seems like it could be useful. I've been wanting to try making lightweight discs for electrostatic generators, using a styrofoam core and plastic sheets glued on the surface. Could use this as one of the plastic sheets, with metal sectors printed on it.
Patrick, another thing you might try is conductive paint. I've considered it for making large spark gap balls (since styrofoam balls are much cheaper than metal, and paint would be smoother than crinkly aluminum foil wrapped on it), but figured the heat of the sparks would poke microscopic holes in the paint and spoil the smoothness. Gold leaf might develop holes as well, being so thin. But if you're not planning to pull sparks off of it, I think either would work just fine for field shaping.
This site is powered by e107, which is released under the GNU GPL License. All work on this site, except where otherwise noted, is licensed under a Creative Commons Attribution-ShareAlike 2.5 License. By submitting any information to this site, you agree that anything submitted will be so licensed. Please read our Disclaimer and Policies page for information on your rights and responsibilities regarding this site.
High Voltage and Foil
