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Where To Get Sets and Parts For discussions about swapmeets, rallies, NVCF and BVWS, car boot sales, antique and charity shops, dealers, newspaper adverts, the local tip and just about any other source of equipment (other than eBay). |
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31st Aug 2014, 4:43 pm | #1 |
Octode
Join Date: Feb 2009
Location: Cornwall, UK.
Posts: 1,275
|
Mumetal
Hmm I think that's the correct name for it, where can you buy this for shielding mains transfomers etc?
Gary |
31st Aug 2014, 5:23 pm | #2 |
Octode
Join Date: Jan 2003
Location: Guildford, Surrey, UK.
Posts: 1,960
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Re: Mumetal
Gary
Telcon Metals in Crawley used to be the supplier of Mumetal, but I am not sure if they still sell it these days. TELCON LIMITED Old Brighton Road Lowfield Heath Crawley West Sussex RH11 0PR UK Ron |
31st Aug 2014, 7:54 pm | #3 |
Dekatron
Join Date: Jan 2004
Location: Newcastle upon Tyne, Tyne & Wear, UK.
Posts: 8,195
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Re: Mumetal
Hi Folks, I got some for work for a magnetic shielding project about 6 months ago. I'll post address details tomorrow. Note that if you want to do any significant "work" to it, bending etc, it will lose some of its properties and will need to be re-annealed.
The company have it in a range of thicknesses from about 1 thou to 10 thou and it can easily be cut with scissors as well as being solderable. Ed |
1st Sep 2014, 8:44 am | #4 |
Octode
Join Date: Feb 2009
Location: Cornwall, UK.
Posts: 1,275
|
Re: Mumetal
Thank you to both of you for the advice.
Ed I didn't know you could solder this stuff so that is very useful to know, Gary |
1st Sep 2014, 7:52 pm | #5 |
Dekatron
Join Date: Jan 2004
Location: Newcastle upon Tyne, Tyne & Wear, UK.
Posts: 8,195
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Re: Mumetal
Hi Gary, our supplier was magnetic shields,co.uk They even did small sample packs, but not sure of the cost.
Cheers, Ed |
7th Sep 2014, 2:27 pm | #6 |
Octode
Join Date: Feb 2009
Location: Cornwall, UK.
Posts: 1,275
|
Re: Mumetal
Hello
I have contacted both of these companies but none have come back to me yet Is mumetal a dodgy item to sell? ie used for bombs etc. None of the big retail spares list it, though it does turn up on epay in other countries, and the amount I need is a small piece just to cover a mains transformer so maybe that's why the two companies are not interested. Gary |
9th Sep 2014, 2:29 pm | #7 |
Octode
Join Date: Feb 2009
Location: Cornwall, UK.
Posts: 1,275
|
Re: Mumetal
I have been given a few names of other suppliers of Mumetal as Telcon do not supply it anymore.
THE PRICE OF IT!.............wow a 50 x 50 mm .5 sheet £79 + etc!!! Hmm me thinks I will go back to the drawing board Thanks Chaps Gary |
9th Sep 2014, 8:46 pm | #8 |
Dekatron
Join Date: Jan 2004
Location: Newcastle upon Tyne, Tyne & Wear, UK.
Posts: 8,195
|
Re: Mumetal
Hi Gary, if it is a standard lamination size see if you can find a local transformer manufacturer. Ask him for a "shroud", or "soap dish" for your transformer. It is steel so will not be quite as good as mu metal
Ed |
10th Sep 2014, 9:03 am | #9 |
Octode
Join Date: Feb 2009
Location: Cornwall, UK.
Posts: 1,275
|
Re: Mumetal
Hello Ed
I have been thinking of other ways to overcome this, I might just try shielding the pre-amp section with tin etc, If I could I would turn the transformer on its side etc but I haven't the room to do this. I might have a rummage through my box of transfomers to see if any have mumetal on them. Thanks For your input on this Gary |
10th Sep 2014, 4:40 pm | #10 |
Octode
Join Date: Feb 2009
Location: Bletchley, Buckinghamshire, UK.
Posts: 1,223
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Re: Mumetal
You can often find scrap oscilloscopes in the car boot section at a Radio Rally.
Generally if they are not working they will still be there at the end of the day, and the sellers will be open to almost any offers just to avoid having to take them back to the garage/shed. They usually have a mu-metal shield around the CR tube that can be recycled for other magnetic screening jobs. |
10th Sep 2014, 6:35 pm | #11 |
Octode
Join Date: Feb 2009
Location: Cornwall, UK.
Posts: 1,275
|
Re: Mumetal
That's interesting thankyou for that information
Gary |