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Thanks for participating in the DrVax community. Irv
Folks,
Forum user Geit gave me a helpful push and I learned how to added additional attachment types to our forums. You can now attach/upload FCStd, F3d and STL files. In addition I have increased the PDF file size limit so I can more easily upload DrVAX video slides decks.
All the best. Irv
The fan that cools the motherboard in one of my printers is getting louder -- a bad sign. I can't find a good replacement. Anyone know where I can find a replacement for this 60x60x15 mm cooling fan that draws around 0.1 A? It must be 24v, unfortunately.
You could also install a simple 120vac to 12vdc or 5vdc wall adapter into the power supply box. Wire it up to the same switch that powers the printer: when the printer is turned on, the fan comes on. You probably have such an adapter already.
Great ideas! Thank you! I haven't opened it up yet (as long as I hear the noise I know I'm ok, 😅), but I do recall seeing some nice 12v ball bearing fans on Amazon.
BTW, I have gotten much more life from small fans by adding some light lube to them; something like sewing machine oil. What I do is dismount the fan then, very carefully, so I don't get oil on it, or otherwise spoil it, I remove the small label/sticker that's stuck to 1 side of the fan's hub. I do this by using the large, well sharpened, blade of a pocket knife, sliding it very gently under the edge of the label, using a really shallow angle.
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I then add 1 or maybe 2 drops of oil to the bearing that's exposed (be on the lookout for fans that have a rubber seal over the bearing: you have to remove it first, which I do with the tip of the small blade of a pocket knife). I usually spin the fan blades a bit, to see if the oil disappears into the bearing, in which case I add another drop. I do that until I get 1 drop that stays. I then check to see if I got any oil on the surface of the hub. If I see some, I use alcohol to remove it. Finally, I replace the label/sticker and press it firmly down onto the hub.
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To help get oil into the bearing without getting any oil on the surface of the hub, I often, if I have one nearby, will use a small syringe to place the oil right onto the bearing.
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While I'm actually lubing the bearing, I normally leave the label stuck to the blade I used to remove it.
If you do decide to replace the fan, remember there are now fans that have magnetic bearings: no physical contact between the rotor and the shaft. They advertise something like 80,000 hours, so kinda like LEDs
Here's 1 you could look at: https://www.amazon.com/SUNON-KDE1206...4870268&sr=8-2. It's a 2-wire (no speed control). I picked that on purpose because I presume you just want it to go on when you power up the printer and stay on until you shut it down.
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