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Author Topic: Nuclear Magnetic Resonance (NMR)  (Read 28550 times)

Offline skywatcher

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Re: Nuclear Magnetic Resonance (NMR)
« Reply #30 on: June 09, 2020, 07:14:13 PM »
If the heating method doesn't work, i would suggest using epoxy resin or UV-curable glue to seal the surface. I would not use paint.

Offline conradelektro

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Re: Nuclear Magnetic Resonance (NMR)
« Reply #31 on: June 09, 2020, 08:19:19 PM »
If the heating method doesn't work, i would suggest using epoxy resin or UV-curable glue to seal the surface. I would not use paint.

@skywatcher@ thank you for the information, also for the link to the lighter. I started 3D-printing with my own printer three months ago and there is still much to learn. I use Autodesk Fusion 360 (the non commercial licence), do you know a better technical drawing program. And Ultimaker Cura 4.5 was o.k. so far as a slicer. I also tried PrusaSlicer but did not find a convincing profile for my Creality Ender III pro, but it worked any way.

I wanted to by a Prusa Mini 3D-Printer, but the delivery time was/is September. Maybe I buy an Original Prusa i3 MK3S kit eventually, but it also has a long lead time (5 to 6 weeks). Hopefully my Ender III pro lasts till Prusa comes up with a new modell.

Greetings, Conrad

Offline skywatcher

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Re: Nuclear Magnetic Resonance (NMR)
« Reply #32 on: June 09, 2020, 08:32:19 PM »
I'm using OpenSCAD:  https://www.openscad.org/

It's like a programming language. For technical things which consist of geometrical shapes it's very good, and it doesn't require much ressources. You don't even need to install it. I'm not a friend of huge software packages like CAD programs where you have 73 different methods to draw a simple line, and you need 4 weeks of training to draw your first cube. I rarely use more than 2% of the functions such programs have, so i prefer software which only has these 2%...

The hollow torus with 2 tubes would only be a few lines of code in OpenSCAD.

Offline Magluvin

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Re: Nuclear Magnetic Resonance (NMR)
« Reply #33 on: June 10, 2020, 12:21:15 AM »
I use Cinema 4d. There is a free version that should let you do what you need for printing. There is blender. It does fantastic stuff but more complicated to get into unless your really into renderings and animation, film...  That is what I was going for with cinema but since I know it, it makes the process good for me. like a .05mm difference on the 3d environment and your printer will do a good job of making that change in print.  Love these printers.
There is another 3d prog that seems very good but it is online, dont remember what it is, ill look.. Has some tools I wish I had.  I just dont like any of my work being out in the open like that. its nobodies business if I make a better toilet paper dispenser let alone what we are striving for.. ;)

Mags

Offline ramset

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Re: Nuclear Magnetic Resonance (NMR)
« Reply #34 on: June 20, 2020, 11:06:02 PM »
At the moment this topic is at itsu bench here https://www.overunityresearch.com/index.php?topic=3924.msg82540;topicseen#msg82540
of course any results will be posted on this board or if others here become interested and want to build here ...quite certain full support will follow.
Many thanks to Conrad for his wonderful offer, efforts and contributions..
with Gratitude Chet K....Ps this update posted with itsu's permission.


Offline ramset

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Re: Nuclear Magnetic Resonance (NMR)
« Reply #35 on: June 22, 2020, 03:56:51 PM »
an update [with permission]
https://www.overunityresearch.com/index.php?topic=3924.msg82565;topicseen#msg82565
as written earlier, support is always offered here for open source experimenters wishing to Join in or try other variations [perhaps make suggestions ?
respectfully Chet K
PS personally I find this fascinating and the cooperation between members...IMO the best part.

Offline ramset

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Re: Nuclear Magnetic Resonance (NMR)
« Reply #36 on: June 25, 2020, 10:51:06 PM »
an update [with permission]
https://www.overunityresearch.com/index.php?topic=3924.msg82565;topicseen#msg82565
as written earlier, support is always offered here for open source experimenters wishing to Join in or try other variations [perhaps make suggestions ?
respectfully Chet K
PS personally I find this fascinating and the cooperation between members...IMO the best part.

magnetic field detector arrives video   https://www.overunityresearch.com/index.php?topic=3924.msg82620;topicseen#msg82620

Offline ramset

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Re: Nuclear Magnetic Resonance (NMR)
« Reply #37 on: June 28, 2020, 03:28:18 PM »

Offline ramset

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Offline ramset

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Re: Nuclear Magnetic Resonance (NMR)
« Reply #39 on: July 04, 2020, 02:28:25 PM »

Offline kajunbee

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Re: Nuclear Magnetic Resonance (NMR)
« Reply #40 on: July 04, 2020, 06:19:38 PM »
Since current in each winding of symmetrical coil is opposed to the other wouldn’t the magnetic field tend to cancel each other out? Current flows one direction then loops back on itself so therefore I would think they would cancel each other.

Offline kajunbee

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Re: Nuclear Magnetic Resonance (NMR)
« Reply #41 on: July 04, 2020, 06:26:23 PM »
Asking out of curiosity since I’ve never seen that configuration.

Offline ramset

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Re: Nuclear Magnetic Resonance (NMR)
« Reply #42 on: July 04, 2020, 07:55:19 PM »
Sir
Fellows are very busy ATM
However I will be certain your question is noticed


Thank you for the interest and question.
Respectfully
Chet K

Offline Smudge

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Re: Nuclear Magnetic Resonance (NMR)
« Reply #43 on: July 05, 2020, 10:43:38 AM »
Since current in each winding of symmetrical coil is opposed to the other wouldn’t the magnetic field tend to cancel each other out? Current flows one direction then loops back on itself so therefore I would think they would cancel each other.
Hi Kajunbee,

These are not solenoidal coils, they are flat pancake coils.  We don't use the axial field that passes through the coils, we use the radial field that passes over the flat surface of the coils.  In the bucking configuration the axial fields from each coil do indeed oppose each other, but the radial fields between the two coils are additive.

Smudge

Offline ramset

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