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 Magnetic Clamps

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troutrunner
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troutrunner

Posts : 573
Join date : 2014-01-23
Location : Lincolnshire UK

Magnetic Clamps Empty
PostSubject: Magnetic Clamps   Magnetic Clamps EmptyFri Jan 08, 2016 8:27 am

While perusing ebay the other day I came across some Neodymium block rare earth magnets, I hadn't a clue these even existed and it gave me an idea. I remembered seeing the magnetic clamps that Barrie has and after seeing the price of these clamps I could not resist the challenge, I just had to have a go at making some.

I bought some 20mm x 10mm x 5mm magnets at approx. £1.40p each and a 200mm x 200mm piece of 10mm Acrylic sheet, cost about £6.
Magnetic Clamps SAM_2338_zps9mntw24u

I used my new Proxxon table saw to cut some bits of Acrylic sheet to the desired size (only made one fopaux).And set a magnets in two to start with, more to follow.
Magnetic Clamps SAM_2343_zpsbvg41jve

Here are the resulting first pair 2thumbsup
Magnetic Clamps SAM_2339_zpsqbsiprct

Magnetic Clamps SAM_2341_zpsryfqd9pf

Magnetic Clamps SAM_2342_zpsqm5oj7rv
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barriew
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Posts : 2327
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Age : 80
Location : Thaxted, Essex

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PostSubject: Re: Magnetic Clamps   Magnetic Clamps EmptyFri Jan 08, 2016 9:04 am

Very Nice Thumbup They look to be a  bit bigger than the ones I bought, which will be better for boat building. Mine were designed for model railways and are not always big enough to handle boat size structures.
I do have some very ferocious magnets - might have a go at making some.

Barrie
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troutrunner
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troutrunner

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PostSubject: Re: Magnetic Clamps   Magnetic Clamps EmptyFri Jan 08, 2016 9:30 am

Hi Barrie, on the York Modelmaking site they do quite a few different types and sizes I am going to make some variations on this one as well. Your clamps are I think just over 30mm mine are about 45mm.

I got the Acrylic sheet from ebay but you could always use wood, but they wouldn't be as tough though.

Yes have a go, it's just a bit time consuming but I think worth it for the satisfaction I got from making them. If you do make some would you post some pictures on this thread please.
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barriew
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PostSubject: Re: Magnetic Clamps   Magnetic Clamps EmptyFri Jan 08, 2016 9:53 am

Yes - I notice they now list different sizes, but they are expensive. When I bought mine they just had the two types. Its not top of my priority list, but I may get round to making some - it would use the magnets I bought for hatch fixings but are way too powerful for that.

Barrie
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barriew
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PostSubject: Re: Magnetic Clamps   Magnetic Clamps EmptyFri Jan 08, 2016 2:44 pm

Paul,

OK - having said it wasn't top of the list, here is my version. I have started planking my hull, so lots of waiting for glue to dry - I'm using aliphatic at the moment, though may switch to CA.

These are made from 4 pieces of 1.5mm plasticard. Each side is 4mm. The two inner layers have a hole cut to accommodate the magnet. Not as neat as the acrylic  but cheaper - these were from the scrap box Thumbup

The photo includes one of the magnets. To give an idea of the strength, when I was returning one to the stack of 5, it slipped and the force of attraction was sufficient to crack it in half.

Barrie

 photo 100_1054_zps9yr113xh.jpg
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troutrunner
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troutrunner

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PostSubject: Re: Magnetic Clamps   Magnetic Clamps EmptyFri Jan 08, 2016 6:35 pm

They are awkward little B's, they have a tendency to fly at anything made of steel, it does say in the leaflet they shatter if they hit each other.

Yes your idea is probably a lot quicker to make, I hadn't thought of alternative materials but now you have me thinking, thanks. 2thumbsup
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