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| maybecnc:
Magnets from disk drives are great. I have some on my shop, on the back of a piece of plywood I have on a wall. I use that plywood as a vertical tool tray for the tools I'm using at the moment. So the HD disks shatter easily... I'm starting using the ones I have for indexing. I'll be careful. Jose |
| fluxcored:
--- Quote from: andyf on January 20, 2011, 06:23:49 AM ---Maybe you could look out for an old brake disc, big enough to get a 4" blank out of one side of it. Andy --- End quote --- Will keep a lookout for that - I never looked at them twice but will investigate closer. Found a nice large disc wheel that I'm converting to a pulley for my saw this weekend at the scrappy. I try to salvage as much as I can from HDD's, sometimes even the bearings but recently I've started to toss the platters because I have'nt come up with a use for them. Thx all. |
| MrFluffy:
A flywheel from a car would make a good candidate too if making a faceplate too. I have a renault clio one waiting for this and its made of cast iron. |
| Swarfing:
Don't dismiss the discs to much as a lot of the cheaper drives are made from Ali as well just very hard. Place them in a cloth bag and bend them. If they shatter they are not Ali. If they bend they are. I melt them all the time and add a couple of copper Tees or elbow pipe fittings which help a bit in a 1-2kg melt. |
| lordedmond:
--- Quote from: andyf on January 20, 2011, 10:06:27 AM ---Hi Jose, According to Wikipedia, cast iron unless they are for high performance cars when they are sometimes made from exotic materials. But the one from an old Rover which I sawed up (just the disc, not the whole car!) seemed to be more like steel than cast iron. The disc in a hard drive I broke up for the sake of the rare earth magnets in it seemed to be made of something very like glass. At least, it shattered like glass. Andy --- End quote --- Thats because they are glass at least some are Stuart |
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