Miscellaneous

Repair of tears in paper cones - a little trick

Tears – big ones and small ones – in paper cones are all too familiar for the speaker collector. They are a nuisance to repair because the rest of the cone is ultrasensitive and an attempt to repair a crack can actually result in an even worse damage. One of the main obstacles is:
How can the cracked edges be pressed together once the glue has been applied – without damaging the cone any further?

The answer is simple: see the pictures.

I bought some 15 x 15 mm magnetic foil tags, you can find these at stationeries. The cone I had to repair has an exponential shape which makes it more difficult for the tag to make full contact with the cone, so I cut the corners of the tags. I applied an organic paper glue to the cracked regions and covered it with a thin plastic foil to avoid glue touching the magnet. Then the magnet tags were attached over night along the tear on the outside and inside of the cone.

This technique can obviously be carried out with any sort of small magnets. The thicker the paper the stronger the magnets must be.

Miscellaneous Repair of tears in paper cones a lit

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