Monarch 10EE: Tooling?? - Page 2
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  1. #21
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    On those diode brass ends, I cheated and used a Hardinge chucker, I drilled the 1/4" brazing rod deep, then parted them off like baloney. I made a little heat sink out of a piece of aluminum can, to keep from overheating the diode when soldering the ends on.

    Some of the diodes shown are the old style factory diodes, where the ends are crimped on to an insulated tube, with diode inside. If you take one apart you will see how it is made. The later factory diodes are enclosed, but the diode is soldered to the ends.
    The old style diodes can test good cold, but under power can lose connection at the crimped caps. Anyway, replacing them with fresh diodes is not expensive. One more thing on the diodes being enclosed, if there is a dead short in a circuit, the diode can explode like a firecracker spitting a bit of hot plastic, so wear eye protection if you have the cover of the module and powered up.
    I am working on a machine or two out in the weather, I will look in when I can.

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  3. #22
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    Well I was able to run the lathe and make the Brass Diode Ends today.
    Plan to solder them on the new diodes tomorrow, and install them in the module and run the lathe some more and see what symptoms persist.

  4. #23
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    Quote Originally Posted by Mac007 View Post
    Well I was able to run the lathe and make the Brass Diode Ends today.
    Plan to solder them on the new diodes tomorrow, and install them in the module and run the lathe some more and see what symptoms persist.
    Grab two cheap pair of "hemostats" AKA "Kelly Forceps", one straight, one curved.

    Look 'em up.

    Kelley Forceps - Google Search

    Any 'lectronics work they are heat sinks, third hand, truant parts grabber outta tight crevices - wotever yah need.

    Lay-down and weight with a hunk of drop, clamp, or vise-grab one loop, grip yer diodes by the leads, they stay put and divert heat of soldering, both.

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  6. #24
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    I’m with Thermite on this one. Kellies are very useful. If you want a smaller version, they are called mosquitos. If you want stronger ones, they are called drivers.

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    Quote Originally Posted by medsar View Post
    I’m with Thermite on this one. Kellies are very useful. If you want a smaller version, they are called mosquitos. If you want stronger ones, they are called drivers.
    Useful for-sure.

    About the ONLY thing I ain't (yet) used 'em for is their original intended purpose. Fast-clamping an artery full-shut so other work can proceed.

    Mind. I ain't no Hannibal Lecter, but still.. I HAVE met the odd free-range damfool now and then as was sore TEMPTING to have a go at OJT!

    You'd have to know machinists? Forever takin' s**t apart jest to prove we can put it back together again. Mostly, anyway.

    Unless we git distracted by sumthin' more interesting to take apart..

    Not sure we'd make very good medicalated chirurgeons, sech flighty priorities, but the other way' round might do as to more Old Iron "surviving the operation".


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    I got all the diode ends made and diodes replaced today:

    72d15311-1636-4353-9f31-3419df495f8b.jpg

    9f5a7d0f-ae3a-41b6-821f-3babbbd310de.jpg

  9. #27
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    Donie, your PM box is full...
    (Sorry to distract from the topic)

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  11. #28
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    Quote Originally Posted by TheOldCar View Post
    Donie, your PM box is full...
    (Sorry to distract from the topic)
    TheOldCar,
    That’s Right, Donnie we can’t reach out to you cause your mailbox is full

  12. #29
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    Any chance you have any ends leftover? I am going to have to replace a few diodes on mine and likely just do all while I’m doing it. Have no way to make them since lathe is all apart and have no mill at the moment. Is there a source to buy these other than making yourself?

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    Quote Originally Posted by dinotom View Post
    Any chance you have any ends leftover? I am going to have to replace a few diodes on mine and likely just do all while I’m doing it. Have no way to make them since lathe is all apart and have no mill at the moment. Is there a source to buy these other than making yourself?
    Hello, I sent you a PM

    I don’t know of a source for Modern diodes, with cylindrical ends installed. Some have soldered the modern replacement diodes’ leads directly to the module’s diode holder brackets. Others make the brass ends and solder them to the diode leads to make installation, later testing, and replacement easier.

    To make the Brass Ends you have to center drill the rod pieces & then solder onto the Diode leads. To do this, this was my process:

    I used CARDAS AUDIO high quality flux and CARDUS AUDIO Quad Solder which is a blend of: Silver, Copper, Tin & Lead and has a low melting point.

    I would pick up a brass end with forceps, hold over a bottle torch flame for 8-10 seconds then press one end into the flux which melted the flux and caused it to flow through the hole in the brass, from end to end. Re-Heat for 8 seconds, then generously feed solder into the hole at each end, Re-heat 8 more seconds and immediately slide onto diode lead and place in dish of acetone to quickly cool. I had about a 1/4 inch of acetone in the dish.
    I then cut off the excess Diode leads and cleaned the brass ends with some steel wool. Lastly I tested the assemblies with an Ohms multimeter.

    The modern Diodes are much more robust and higher quality than the originals.


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