DIY Hard Drive Electric Grinder for Tool Sharpening

If you have a lot of bad hard drives, always think about also doing a hard drive electric grinding, you may want to follow along with the operation.

Find two hard drives, one ide interface, the other sata interface, power on and try, ide interface hard drive can turn about 1 minute, and very fast, sata interface turn a little while to stop. These two discs are recessed into the body of the disc.

The recessed platter can be used to grind nail heads and so on, but it is not convenient to grind knives.

The old hard drive has a cover that protrudes from the top, and the platters can protrude out of the platter, so you need to cut the platter, and if the platter is hard, be careful when operating. If you use an angle grinder to cut, it may be dangerous because it is not firmly fixed, it is recommended or not so. You can use a large 220V electric grinder to cut, but to avoid breaking the shaft, originally need to cut off two corners, but because the operation is more difficult, cut off a corner is also possible to continue the operation.

Used a 5V voltage regulator to the hard disk, you can make the hard disk with 12V power to turn up.

Only the regulator block is connected, you will find that the regulator block is a bit hot, so you also need to connect a 0.33 capacitor at the input.

A minute to stop the rotation can add a switch, stop and then switch on and off, switch 2 or 3 times basically on the mill.

With a 12V computer fan to do the electric mill, the force is a little small, with a laptop 20V power supply will be better, but still no hard drive to power.

With 220V cooling fan to do the electric mill, the force is even smaller, force to remove the fan blade to uncover the sky lid, which is very thin enameled wire, high voltage, but the force is too small.