Electrical Projects & Wiring Tutorials

Scraping in all bearing surfaces on my Wards/Logan 10"
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I've been working on my lathe off and on over the past several weeks or months, but I've been hesitant to start a thread documenting my progress (or lack thereof!) for fear of embarrassing myself. I'm increasingly confident that I'm going to end up with a very precise lathe rather than a very large pile of cast iron dust and tears, so I'm finally willing to share my progress. After creating...
KO-Lee Cutter/Grinder Revamp
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Perhaps you've seen this from other photos... It's a KO-Lee cutter grinder. It's a good platform and the table and all mechanisms are in excellent condition. I don't think this machine was used much in it's lifetime as there are very few signs of wear (hardly any at all really). The motor is the weak link. The bearings are going bad and vibration can be felt in the short shaft. The...
Restoring an old powered hacksaw
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Figured I'd share my restoration project! I've always found these old machines quite cool and when a neighbour offered me a defective one for free, I couldn't say no! :D This is the machine as I got it, it runs but won't lower the sawblade so you have to manually push it against the work piece, which becomes quite the challenge and dangerous as heck when it's moving back and forth. The...
9A project completed
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Some of you guys may remember this little crudball I acquired back in April... I had just completed the last project, the Seneca Falls #30 resto-mod,(project of the month) when this lathe found it's way to me via a friend of a friend. My friend, who is also a tool salesman, showed me a pic of this on his phone, which came from his friend, the seller, who now is a retired tool room...
Clausing 1771 Drill Press Restoration
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I picked up a Clausing variable speed drill press from a Craigslist ad. I offered the guy $200.00 and he accepted. The drill press was in decent overall condition, and had a new motor on it. I disassembled the machine and cleaned up and painted everything. Mechanically, it was in very good condition, and the only real repair work I did was to straighten a few of the handle arms. One...
Putting the ELS3 (Electronic Lead Screw ) on a LMS-3536 Lathe
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This project has a number of steps - I'll divide it into sections so you don't get overloaded!! Ever since I had my first machine shop in the 80's (Sheldon 10x36) I've had the bug to build or get an Electronic Lead Screw. Back then the tech was so "low" that I couldn't begin to afford or think of it. In 2012 I became aware of the Arduino and mcu's in general, and began tinkering... and the...
Capacitor Tester (don't throw away that old multimeter!!)
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Years ago my old analog multimeter passed away. I had the bright idea to keep the meter, in case I will make something useful out of it later, and threw away the rest. That “later” came a few days ago when I needed a way to test Equivalent Series Resistance (ESR) of some electrolytic capacitors that looked good but die quickly. Let’s take the story from the beginning! The need to test...
Construction details of A Complete 13.8 Volt, 50 Amp Power Supply
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In part-1 Ioutlined the basic needs of an high current power supply and dealt with the protection circuits needed for safe operation. In part-2 I will deal with the construction of the unit itself including PCB layout, wiring diagrams and testing. Construction can be split up into five parts: 1. Construction and testing of the PCB. 2. Making the case 3. Pass transistors and heatsinks...
[How do I?] Motor wiring puzzle
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I am trying to help a friend get a motor wired up and it has me stumped. The motor is 5hp single phase 240v 3420rpm TEFC with a centrifugal switch for a start capacitor. It was purchased surplus with no documentation and missing capacitor(s). Here is the tag: Grizzly has been no help. There are two red wires, two black wires, and one yellow wire coming out of the motor. R1 connects to...

Matt offered me a 3ph motor Now wiring the VFD?

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I have desided to go with a new 3ph upgrade from Matt. The caps didn’t work so mat thinks the centrifical switch is dead. Now while I was researching 3ph conversion, I saw a post on wiring the PM932 forword, stop reverse switch, and E-stop so as not to release the smoke out of the new parts, being the dummy I am, I didn’t mark it for reference. Now I can’t seem to find it again. Most likely...

Vfd's Rpc's And 3 Phase Power At Home

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I see a TON of questions on RPC's and VFD's on here and I figured I would type out a knowledge base for what they are and how they apply to the home shop. We as machinists work with industrial equipment at home. It's obvious if you are reading this that you know that industrial stuff is typically 3 phase and you want it to run in your home shop where there is no 3 phase power. For a long...
Joel Miller Cnc Milling Machine
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Original at http://jmillerid.com/wordpress/category/cnc-milling-machine/ CNC mill phase 1: planning Thursday, 9 June 2011 While I have understood the basics concept of CNC machining–and have utilized it in my work–I never fully appreciated how complex a system a CNC machine is until I set about designing and building one. There are many software and hardware layers are involved in the...