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owenhamburg 8th April 2012 01:36 PM

Cheap tricks for construction.
Dear all,

Many of us DIY audio people started off trying to reduce costs, very soon we released that all this knowledge costs money with experimentation. Lets share some tips on how we reduce costs.

Here is my entry:

Aluminum foil (I did not use plastic backed) can be glued on to wood/cardboard easily with PVA glue. even more surprisingly it seems to stick aluminum foil together too. PVA glue as its cheap and works surprisingly well. PVA glue is known to some Americans I believe as "white" glue. I also found hot glue to work well as well, but is more costly and difficult to use as it sets to fast.

So to make a prototype box, for electronics, select a nice solid cardboard box (Computer motherboard boxes are very nice for this job). Unfold the box, coat the outside with PVA, but keep the folds a glue free. Then apply aluminium foil, leaving a little bunched up at the folds so when it sets it wont have to stretch to much. Rub the aluminum flat, moving the glue into a thin flat surface under the aluminum and then you have a good and very cheap shielded box.

Do remember that PVA glue needs air to set so its best not to do to many layers of aluminum foil and PVA at any one time.



gmphadte 17th April 2012 04:41 AM

metal can be found pasted on a discarded hard disk, if u r looking for a small one.

Gajanan Phadte

cyclecamper 17th April 2012 05:02 AM

gmphadte Do you mean 'mu-metal' the shielding foil made of layers of different metals? Where is it on old hard disks??? Are you talking 3390's or PC drives?

gmphadte 18th April 2012 10:07 AM

It is the small label sticker.

Gajanan Phadte

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