Teralab Guestbook

This is the place where readers can post their thoughts and comments about the site. The message form can also be useed to ask questions. This guestbook was opened on the 1st of March 2004.

Making your own lamps

Mark Lawton (UK)
14 May 2009
Hi there, I like your site in general, but especially about making your own low voltage filament lamps. I also like the museum of old lamps and thermionic valves too. My Name is Mark, and I am an electronics engineer working in Aldridge, Walsall at www.lektronix.net. We repair drives and controls there for industrial use. I read your history, and I have always made projects and tinkered about with things too. My parents had a "G8" too, and I kept on repairing it a lot! I used to visit "Thackers" in Cheslyn Hay to pick up old radio bits, I am a radio amateur, and a hobbyist, as well as working in electronics. One big project I did was to convert my Skoda Favorit to run on LPG. It was a success, and I sold the car with it fitted some years later. I like your filament lamps because they are nostalgic to look at, and the light is nice from them. I don't like the CF lamps we use today, and I have been looking for some 240V squirrel cage bulbs for my floor lamp in the lounge, as well as for my ceiling fan lamps as well. I'm not sure how they stand vibration in a fan lamp, but they sure do look pretty. I am looking for some way to start an online business, so I am always searching the net looking for "bespoke" items, hence how I fell upon your website. I would love to work for myself doing something, it does not have to be electronic either. I did a search on "glass blowing lamps" and I found you from this search on Google. Thanks for a great site.

Glass to Metal Seal

Kamal Baid (India)
19 December 2008
Hi, I carefully read the amazing work done by you. I also noticed that you acknowledge JLC Electromet as a Dumet supplier. Yes I developed production of dumet wire from basic stage by reading and understanding the fundamentals of glass to metal seals and properties of materials. I am a mechanical engineer who has developed many many technologies, materials and very special purpose machines including dumetplant for mass commercial production. Any body in world and in any country if want to do any scientific work with Dumet of any kind,(Bare,Borated,Oxidised or Nickel plated) I offer him free Dumet for his Scientific work, Ex factory , Jaipur, India.
Any body want to share knowledge on Glass Sealing and material can contact me at ksbaid@jlcelectromet.com
Once again I congratulate to you for doing wonderfull work by hand and assure you of all of my Technical Support for the enhencement of this knowledge for the betterment of all living being.
Kamal Baid

Electron Optics and Tesla Coil

Galang Hakim (Indonesia)
8 December 2008
Hi Mr. hunt
its good to know that there are a great people that always share their experimental to the world and thanks to you I can go on with my own research again
its a nice, great, and its fun to see this site after a long... long... tiredness searching. by the way i would like to ask question how about we combine tesla coil and electron gun you had made, so we can transfer energi wirelessly Via electron modulate with specific frequency by tesla coil. it seems fun but sounds crazy isnt it???
last words.... thanks for all of your experiments and keep the good job all the time Cheer Hakim Galang

Reply from Teralab:
I think you may have invented the magnetron.

Vacuum System -- Nice

Tom K (USA)
23 September 2008
Dear Mr. Hunt, I found your website while searching for information on power supplies for a metal evaporator. I didn't expect to find a hobbyist doing these kinds of experiments, but I'm glad I did. So much fun, and an inspiration to me, as I've been wondering if I could put an evaporator together to show to my daughter's Kindergarten-1st grade (ages 5-7) class. Your work is an existence proof that it can be done. Well done! Have you tried pumping down your vacuum system with a glass of water inside the chamber? Maybe not so good for the system, but it is fun to see water boil at room temperature!

Reply from Teralab:
Yes I have tried it. When you see it it's hard to believe it's at room temperature. It is bad for the pumps but one can get away with it for a while with the gas ballast fully open on the rotary pump. Better still use somebody else's pump.

Re Your Site

Tim (New Zealand)
2 March 2008
Hi, normally I flick through various internet sites and look (at the 1 in 100 that don't seem to be trying to sell you something) for a few mins..Ive been on yours for hours..I love the kinds of things you're into myself...I pulled things to bits when I was very young and have electrocuted,burnt and poisoned myself many times...Now that im older I am a bit more careful and of course a lot wiser from my mistakes and experiments...I was wrapt to see the tesla coil and I read everything you have on the glass bulb type stuff...Im gonna give that a go..Its hard to buy glass tube in this country as they think you're making drugs !!!In fact I think I have read everything in your site and some of the link sites as well. I think you did a great job with this site...Thanks for sharing it all...Cheers Tim