Here is a photo I took: Here's a vacuumed tube for you-- its about 30 feet long and the beam current is 10,000A or more. Can anyone guess what it is called, in general? [ clue- the view is from the target -plate- end looking towards back towards the source (not shown in place)].
And, what are all those metal stainless steel donut-like rings used for?
Another clue: JN mentioned wigglers once upon a time.
-RNM
And, what are all those metal stainless steel donut-like rings used for?
Another clue: JN mentioned wigglers once upon a time.
-RNM
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I don't need to own it, just to manage it.
kh, we actually have about a dozen different Instrons in our test lab, including one which is not generally sold (who cuts the barber's hair?). Besides the usual tensile, elongation, flex, and the like, we can do very accurate time-resolved torque measurements. This is useful for development of our chipmaking fluids.
Nelson's not in this thread waving his hands and thumping his chest over his chassis designs.
se
Test equipment Club -
yes, as a member of The Club... its part of the membership bylaws (you read them, didnt you). Now that we know what all the good stuff is about and where it is located.... we can steal it or borrow/use it as a club member.
Thx-RNMarsh
yes, as a member of The Club... its part of the membership bylaws (you read them, didnt you). Now that we know what all the good stuff is about and where it is located.... we can steal it or borrow/use it as a club member.
Thx-RNMarsh
John,
If you and Nelson are ending up with a chassis weight anywhere near that heavy, 75lb. then you have to think about how much of that is hitting the floor from being milled out. That is a ridiculous waste of expensive material. There are much smarter ways to use the material if you are going to do it and not throw most of it in the recycling bin in the machine shop. You aren't making a wheel to go on a plane or a car so what is the point of a single billet? That is just a lame industrial designer as far as I am concerned.
If you and Nelson are ending up with a chassis weight anywhere near that heavy, 75lb. then you have to think about how much of that is hitting the floor from being milled out. That is a ridiculous waste of expensive material. There are much smarter ways to use the material if you are going to do it and not throw most of it in the recycling bin in the machine shop. You aren't making a wheel to go on a plane or a car so what is the point of a single billet? That is just a lame industrial designer as far as I am concerned.
I'll be blowed ... I've just discovered that T W A T as a word is a "naughty" as far as the forum software is concerned - bizarre ...!!
Frank
Sy,
I was going to suggest cast aluminum myself, but thought I would hear grief about the finish and not having the same high polish. You could do plenty with a casting like texture or powder coating or many other things. Or a great designer could do a nice fabrication from plate and assemble the structure with all hidden fasteners if that was the object there. I work with patterns and could easily cast one of these shapes and do things that would be a pain with machining unless you had a five or six axis milling machine. Not much thought would go into a milled billet with straight sides.
I was going to suggest cast aluminum myself, but thought I would hear grief about the finish and not having the same high polish. You could do plenty with a casting like texture or powder coating or many other things. Or a great designer could do a nice fabrication from plate and assemble the structure with all hidden fasteners if that was the object there. I work with patterns and could easily cast one of these shapes and do things that would be a pain with machining unless you had a five or six axis milling machine. Not much thought would go into a milled billet with straight sides.
Most of the XP30 is actually flat plate or extruded it saves on milling cutters and cutting fluid. The prototype was nailed to plywood and sounded just fine.
We once made product in sheet metal for lower pricing. Customers stayed away in droves. You pay for less in bikes and airplanes not Hi Fi.
We once made product in sheet metal for lower pricing. Customers stayed away in droves. You pay for less in bikes and airplanes not Hi Fi.
OK, then I definitely qualify, I've accumulated more than three over the years.
Tek 465, TDS520, TDS724A, P6202, P6201 x3, Tek passive probes, HP3561A, HP3478A x2, HP332, EMT424, B&K 2429, B&K 2971, B&K 6203, Micom 8300, Yokogawa TA520, Leader LFR5601, Meguro MK617, all sorts of oscillators, LCR bridge, transistor measurement setup, FET measurement setup, tube measurement setup, millivoltmeters, selective millivoltmeter, Teraohm meter, Gefell measurement mics, freq. counter, tentelometer, ADT spdif/aes stream analyzer, FFT analyzer software and so on.. too many to list. I must be test equipment junkie then
All bought out of my own pocket!
My head hurts, think I'm getting my DJ Vous period again.
Wasn't that mentioned like mmm...7 years and 7 weeks ago ?
Oh Yeah, I remember, spooky : http://www.diyaudio.com/forums/solid-state/71189-john-curls-blowtorch-preamplifier.html#post810214
(so what if I get a lot of my creative inspiration from Nicholas Cage, big deal)
Bit of a shame to let all that material get wasted by total milling, plus the extra time.
I've done a one-off V-drive gearbox for the propulsion of my boat, housing in sand cast aluminum, with a milling finish on the inside.
Faster and cheaper than solid billet, and easy to pour bubble-free.
You guys should try pouring 5500lb of molten lead in a worm-drive retractable keel, after a week of welding.
(me milling at 10, lathe at 12, Argon-arc welding and foundry +200lb in 1-shot sand cast at 17)
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