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Type: Posts; User: Joe Gwinn

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    I'd try vacuuming it.

    I'd try vacuuming it.
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    Alcojet in an old domestic dishwasher? Alcojet...

    Alcojet in an old domestic dishwasher?

    Alcojet Low Foaming Powdered Detergent | Alconox, Inc.

    Available in small quantities on Amazon.
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    Yeah. I still have a 14" platter from the day. ...

    Yeah. I still have a 14" platter from the day. Suffered a head crash, as was common back then. There is a 1/3" wide ring near the outer edge where the brown magnetic paint has been scraped away to...
  4. To my eye, it looks like the moving wedge is...

    To my eye, it looks like the moving wedge is installed upside down.
  5. I just read the table, and they don't actually...

    I just read the table, and they don't actually speak of machine shops per se.

    What they require to close are the manufacturers of machines. But people that make things (other than machines)...
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    Are you just recording for your own records, or...

    Are you just recording for your own records, or do you intend to publish on youtube?

    The problem with a person-mounted camera is that watching the video can be nausea-inducing from all the camera...
  7. Thread: delta vfd-b

    by Joe Gwinn
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    First of all, you need to rewire the Rev-Off-Fwd...

    First of all, you need to rewire the Rev-Off-Fwd switch to control the VFD, and not to switch the three-phase from the VFD on its way to the motor, to prevent destruction of the VFD. The speed...
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    Even if 53 MFD isn't what the factory ordered, it...

    Even if 53 MFD isn't what the factory ordered, it should work well enough.

    My suspicion is that one of the two windings has a shorted turn or three. This can be impossible to detect with an...
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    Hmm. Is the supply voltage correct for the motor...

    Hmm. Is the supply voltage correct for the motor wiring configuration?

    Can you measure the capacitor capacitance? Actually, there are two capacitors. Are they both good? Many digital...
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    Bad start cap that stays in the circuit because...

    Bad start cap that stays in the circuit because the motor does not actually get up to speed? Measure the RPM. Fix is easy. Call Baldor for parts and data.
  11. When the air brake was invented, electricity was...

    When the air brake was invented, electricity was complex, immature, expensive, and unreliable. The only place electricity was necessary was electric lighting.

    By contrast, compressed air...
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    That's a generic kind of Delrin, which is rated...

    That's a generic kind of Delrin, which is rated for press fits by DuPont. How much of a press fit it will take I cannot say, and a question to the mfgr is in order.
  13. It will depend on the effective color temperature...

    It will depend on the effective color temperature of the shop lights.

    The LED actually emits ultraviolet (UV) light, which causes nearby phosphors to light up. Just like a fluorescent lamp, but...
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    Vitreous enamel - Wikipedia...

    Vitreous enamel - Wikipedia

    See notes 26 and 27.

    I bet that the Porcelain Enamel Institute can help.

    Porcelain Enamel Institute
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    Looks like a fluxgate to me as well. It is not a...

    Looks like a fluxgate to me as well. It is not a Hall device, as they do not use coils at all.
  16. I think that the only way to tell is to order...

    I think that the only way to tell is to order some samples, where a run machined from the same batch of steel is split into two groups, one Oil quenched, the other MAR quenched, and see how it goes.
  17. Sudden onset of unstable walking coupled with...

    Sudden onset of unstable walking coupled with vision changes? Get thee to a doctor immediately.
  18. That's probably why Prasham is asking the...

    That's probably why Prasham is asking the question here.
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    What do you mean by "strength"? What is the...

    What do you mean by "strength"? What is the proposed application? It matters a lot.
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    Not really. Earth's internal heat budget -...

    Not really.

    Earth's internal heat budget - Wikipedia
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    I'd wonder if it was actually cheaper to turn the...

    I'd wonder if it was actually cheaper to turn the heat off over the weekend.
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    Try "5f5" paint stripper. It still has methylene...

    Try "5f5" paint stripper. It still has methylene chloride:

    https://savogran.com/pdfs/5F5_MS.pdf
  23. Insulation is very likely glyptal, which is...

    Insulation is very likely glyptal, which is pretty robust stuff.
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    Hmm. Good point. Is the customer planning to...

    Hmm. Good point. Is the customer planning to conformal coat or paint after machining?
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    I'm betting that the customer's reason is that...

    I'm betting that the customer's reason is that many kinds of plastic are chemically vulnerable to oily substances, and will crack or craze after a short time in service. This is why I was suggesting...
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