Re: Grizzly is doing better - I hope!!!
They have grown over years. There was others selling Chinese equipment in 1980's but they are gone today. Now we also have Amazon and Walmart too less customer service ok none better price. Dave
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davesmith1800
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#118026
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Re: DC power supply grounding
Thanks for the advice everyone.? Makes sense to me now. Have another question, this time about AC. I found a wiring diagram that matches what I see in my old Speedway/Homier.? I noticed the AC fuse
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chrisser
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#118025
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Re: DC power supply grounding
chris wrote: Agreed -- that's an excellent way to think about it, and a good way to describe it to others. Have you written that conversion up, or do you have a pointer to someone else's similar
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Paul Fox
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#118024
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Re: Grizzly is doing better - I hope!!!
I agree, they don't but they are keeping a few hundred(?) people employed and a few thousand hobbyists like us busy. There aren't any US machine-tool makers that make low-cost machines. Any such
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Prasad
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#118023
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Re: Grizzly is doing better - I hope!!!
US business?? ? Do the sell anything made in the US? -- Lone Tree, Colorado? ?USA
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Craig Hopewell
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#118022
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Re: Magnetic DRO Reader Gounding?
The LMS DRO has a SIEG Bluetooth box to which the reader head cables connect. It¡¯s powered by a 12V switching ¡°wall wart¡± PSU. Do I understand correctly that the lathe/DRO reader heads ground
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CBJessee-N4SRN
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#118021
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Re: DC power supply grounding
I like to make a distinction between the use of ¡®ground¡¯ and DC return patch. It is simple. ¡°grounds¡± do not carry current. For example, the rounded shield in a cable is always at zero volts
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Chris Albertson <albertson.chris@...>
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#118020
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Re: DC power supply grounding
Lots of folks don't get that a good ground is alot like a good motorcycle helmet . Ya really need one . I could just see a bean counter lookin to cut cost & sayin ya don' need that many grounds from
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mike allen
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#118019
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Re: DC power supply grounding
I once had to tell the builders of Palo Verde #2 that they had to bring everything to a single point. "Star" grounding! "But that's miles!" Bill
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Bill Williams
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#118018
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Re: Magnetic DRO Reader Gounding?
Don't connect the DRO to the AC ground. Only connect the DRO shield to the DC return. That is it's reference point. wrote:
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BuffaloJohn
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#118017
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Re: DC power supply grounding
Chris's advice is useful if you have high speed signals or analog signals that need to be protected from noise. If I am not careful, I will ignite a signal integrity war. Having been a EE designing
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BuffaloJohn
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#118016
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Re: Magnetic DRO Reader Gounding?
The shield ground is to be connected at one end only with the other end left not connected to anything. This means there can never be current flowing in the shield. Connect the shield to the Lathe¡¯s
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Chris Albertson <albertson.chris@...>
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#118015
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Re: DC power supply grounding
The purpose of "grounding" is to provide a return path for a voltage to a safe place to keep a human from suffering harm - pretty simple. The AC main ground should always be connected to the frame of
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BuffaloJohn
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#118014
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Re: DC power supply grounding
No, the iron frame is a protective ground that eventually goes to the AC breaker box. its purpose is to short a stray wire to the ground. it is only for safety. You do however need a DC ground point.
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Chris Albertson <albertson.chris@...>
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#118013
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Grizzly is doing better - I hope!!!
Today, I just received the annual catalog from Grizzly by mail. It is very thick compared to what they sent me last year which was relatively thin with maybe just under 50 or 100 pages, not sure. This
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Prasad
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#118012
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DC power supply grounding
Brett's post on DRO grounding made me wonder if I should ask a similar question... I'm doing some mods to my lathe involving a larger controller box to accommodate a typical Chinese RPM display and an
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chrisser
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#118011
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Magnetic DRO Reader Gounding?
The LMS lathe DRO kit has DRO reader heads with the coax cable shield tinned, presumably for grounding. My AC Panel is grounded to my copper cold water pipe (meets NH code), with both in the basement
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CBJessee-N4SRN
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#118010
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Re: A couple of home brew DRO's
I remember hearing that problem. Same thing can happen with DRO too. The best is the optical type even today. There was another type used a dial indicator and I'd type mic. Both was very reliable but
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davesmith1800
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#118009
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Re: Tricks of the trade
For *blind threading* RH use reverse and cut from back side. You use a carriage stop move carriage to stop and ingauge the haft nut and start in reverse.? Now cutter will back out hole. Note this
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davesmith1800
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#118008
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Edited
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Re: A couple of home brew DRO's
Nods, remembering back 1960's with the mechanical Travl dial's on some mills, skipping and guys scrapping parts, couldn't trust em...
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Charles Devore
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#118007
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