Donald MacDonald 1 | 27/04/2022 21:27:05 |
50 forum posts | Hello I am looking for a material that is:
DISCUSSION - Copper & Brass Stainless steel - from memory if it is 'Austenitic' then it should be completely non-magnetic. From my notes, the following grades of stainless steel are Austenitic: 201, 205, 301, 302, 303, 304, 316. I was also thinking about some kind of strong black plastic (e.g. Nylon?) but that's quite hard to glue. Any suggestions?
Edited By Donald MacDonald 1 on 27/04/2022 21:42:15 |
Emgee | 27/04/2022 21:55:45 |
2610 forum posts 312 photos | Carbon fibre laminate may work for you, epoxy glass would be another choice except for colour. Emgee |
Brian G | 27/04/2022 22:16:28 |
912 forum posts 40 photos | Tufnol Kite is available in black. Brian G |
Donald MacDonald 1 | 27/04/2022 22:16:44 |
50 forum posts |
Carbon fibre laminate is an interesting suggestion, however it sounds like carbon fibres do have a slight impact on a magnetic field. However is grade "1050" relatively soft? (I understand that aluminium alloys do vary in strength pretty dramatically..) Don |
Huub | 27/04/2022 22:19:04 |
220 forum posts 20 photos | You could try black POM. To glue it you need a special glue There are others types of glue for POM and other plastics. |
Donald MacDonald 1 | 27/04/2022 22:25:37 |
50 forum posts | Posted by Brian G on 27/04/2022 22:16:28:
Tufnol Kite is available in black. Brian G I've never used Tufnol Kite. It sounds interesting. Can you recommend where could I buy a small piece? Edited By Donald MacDonald 1 on 27/04/2022 22:28:18 |
Emgee | 27/04/2022 22:45:48 |
2610 forum posts 312 photos | Posted by Donald MacDonald 1 on 27/04/2022 22:16:44:
I don't know anything about "epoxy glass". Is it a sheet of epoxy resin with "fibre glass" embedded in it? I should have stated laminated glass cloth and epoxy resin, also available with polyester resin material. Emgee |
Donald MacDonald 1 | 27/04/2022 22:53:23 |
50 forum posts | What about Stainless Steel - "Grade 316L" |
Michael Gilligan | 27/04/2022 23:05:06 |
![]() 23121 forum posts 1360 photos | Posted by Donald MacDonald 1 on 27/04/2022 22:53:23:
What about Stainless Steel - "Grade 316L" . You might find this useful: **LINK** https://www.greenwoodmagnetics.com/resource/what-is-the-difference-between-304-and-316-stainless-steel/ MichaelG.
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Bill Pudney | 27/04/2022 23:10:19 |
622 forum posts 24 photos | Epoxy glass material has been used for PCBs (printed circuit boards) and are used in a few thickness's. It can be cut but not really accurate. Any of the SRBP/SRPL (synthetic resin bonded paper, and synthetic resin bonded linen, if I remember rightly the SRPL has better properties) machine moderately well. Look at Tufnol, they make it, they market it in all sorts of special trade names (Carp, Whale etc) Acetal resin could be quite interesting. The sheet panels are probably not adequately flat for your purpose, so they would need to be machined. It can be a challenge. Personally I would suggest that you use 7075 T651, its very strong, i.e. better than steel, machines beautifully, relatively cheap. Probably to easy. cheers Bill |
Ady1 | 27/04/2022 23:23:00 |
![]() 6137 forum posts 893 photos | That aluminium chequer plate they glue onto landrovers is pretty tough Get a 1mm sheet of 5bar and sand it down Edited By Ady1 on 27/04/2022 23:26:20 |
Donald MacDonald 1 | 27/04/2022 23:43:20 |
50 forum posts | Posted by Bill Pudney on 27/04/2022 23:10:19:
Epoxy glass material has been used for PCBs (printed circuit boards) and are used in a few thickness's. It can be cut but not really accurate. Any of the SRBP/SRPL (synthetic resin bonded paper, and synthetic resin bonded linen, if I remember rightly the SRPL has better properties) machine moderately well. Look at Tufnol, they make it, they market it in all sorts of special trade names (Carp, Whale etc) Acetal resin could be quite interesting. The sheet panels are probably not adequately flat for your purpose, so they would need to be machined. It can be a challenge. Personally I would suggest that you use 7075 T651, its very strong, i.e. better than steel, machines beautifully, relatively cheap. Probably to easy. cheers Bill
Hello Bill
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not done it yet | 27/04/2022 23:53:23 |
7517 forum posts 20 photos | Aluminium is paramagnetic. Depends on what the application involves. |
Bill Pudney | 28/04/2022 00:00:24 |
622 forum posts 24 photos | I would look for someone who builds aircraft. But I live in Australia. But either 7075 T651 or 2024 T3 should be available in the UK, but Amazon or eBay are likely to be not a lot of use. cheers Bill |
Donald MacDonald 1 | 28/04/2022 00:05:16 |
50 forum posts | Posted by not done it yet on 27/04/2022 23:53:23:
Aluminium is paramagnetic. Depends on what the application involves. The application involves high strength permanent magnets. The main thing is that it is important that material does not "short circuit" the magnetic flux between two plates. D
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Joseph Noci 1 | 28/04/2022 08:03:07 |
1323 forum posts 1431 photos | Been a lot of suggestions here, but to be honest, the best that helpful folk can do here is to shoot in the dark- you hint at all sorts of constraints and very specific limitations but describe naught that would help in people giving more appropriate advise. Strong and abrasion resistant - Aluminium is not the latter - it galls. Fibreglass - FR4 esp, is very strong, very abrasion resistant, very accurate in thickness, 0.2 to 3mm in steps of 0.2mm, etc, etc, etc, etc - but then you add another constraint - must not be brittle...Which FR4 is NOT. But its not silver or black - so what's wrong with paint - or is the pigment now to magnetic??? If the project is so secretive then I suggest you obtain a sheet of Unobtanium from ACME Co in Never-Never land - should do the job! But seriously - how do you expect folk to help when everything pertinent is a secret, and ever suggestion is met with another constraint....and 10 hours have past already so whats the 24hour rush..or is there a magnetic pole flip due this morning? Sheesh.. |
Andrew Entwistle | 28/04/2022 09:12:55 |
![]() 120 forum posts 218 photos | Hi Donald, If you can accept the inevitable slight magnetic susceptibility I would go tor the amazon stainless which fits all of your specifications. Otherwise I would try Tufnol, available in 1mm sheets from direct-plastics.co.uk or another plastic. Andrew. |
John Haine | 28/04/2022 09:28:22 |
5563 forum posts 322 photos | Hear hear Joe! Get some 1mm Ali sheet from B&Q and give it a try, come back if it doesn't work. |
Baz | 28/04/2022 09:39:22 |
1033 forum posts 2 photos | Totally agree with Joseph, and if you want help have the decency to tell us all about what you are doing, also how about YOU try doing your own research, stop using the typical manager technique of delegating everything and doing nothing yourself. In short tell the complete story of what you are doing, why you are doing it etc. Nobody minds helping people achieve their goals but I suspect this a business venture and in MY opinion you are taking the p**s |
Alan Jackson | 28/04/2022 10:00:47 |
![]() 276 forum posts 149 photos | What is wrong with hard wood? Like lignum vitae |
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