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Registered Member #1498
Joined: Thu May 22 2008, 07:08AM
Location: Hong Kong
Posts: 72
As the title, how do you get a beautiful toroid? I'm finding a way to make a perfectly shaped, smooth toroid, like John Freau's, but I don't have an expensive lathe and I don't want to pay to much to make my own one, is there any good idea? I've found a way which seems quite good.
Registered Member #2390
Joined: Sat Sept 26 2009, 02:04PM
Location: Milwaukee Wisconsin
Posts: 381
The best way i have found is to have John make one for you! That man is a true craftsman! Most beautiful toroid work i have ever seen, and i have been a metal fabricator since 1994. Aside from that, the best way as far as i am concerned (leave the masterpieces to the experts) you could spin one and just take a lot of time and effort to sand it to perfection. But in all reality, Johns toroids are about as reasonably priced as you can find. Exceptional quality, unmatched attention to detail, and all around perfect. I have tried to source different manufacturers and there have been none that even come close. If you plan on doing them yourself, just take your time and remember, "practice makes perfect" !!
Registered Member #2481
Joined: Mon Nov 23 2009, 03:07PM
Location: ITALY
Posts: 134
I wonder if it is really important to have a smooth toroid surface or the corrugated aluminium ducting pipe is not so detrimental for TC efficiency....
Registered Member #480
Joined: Thu Jul 06 2006, 07:08PM
Location: North America
Posts: 644
doctor electrons -
You mentioned that you evaluated (or at least examined) spun toroids from several other sources, and found their quality inferior to John Freau's very nice units.
Can you provide contact information for the other toroid manufacturers that you were able to locate? For some applications, a less than cosmetically-perfect toroid might be acceptable.
Registered Member #2390
Joined: Sat Sept 26 2009, 02:04PM
Location: Milwaukee Wisconsin
Posts: 381
4 X 13 is what i had and since gotten rid of. Butler claims to be able to make toroids up to 55" diameter. I do not know what they have on hand for tooling but i do know that every one is considered "custom". To me that means they have none on hand and they make it after you order it. I believe they will make any size you ask for being as they are not already formed. You could email them and maybe get a list of "standard" sizes? Of the two companies, i would say butler had a better product. Both of these companies were very hard to find! The best bet is not to look for toroid manufacturers, instead for metal spinning. Thats what i did and it got easier to find companies willing to whip up one part!
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How do you get a beautiful toroid?
