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jaybmiller 
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Joined: 12 Sep 2009
Location: Greensville,Ont
Points: 22443
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 Topic: rebuilt the welder
Posted: 26 Mar 2018 at 4:23pm |
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OK, my 30 year old Lincoln AC-225-C 'buzzbox' needed a new switch. NO local repair shop,so nearest one want $300+taxe (and gas 120miles(there/back twice) so close to $400. As I ponder option, I email the head office and get a price for the switch...$40
I see the welder on sale so I buy it for $380 with a 3 year warranty
Then UPS shows up today with a new switch for my old welder. It took me an hour to replace the switch and needed my pops 70+ year old 250watt soldering iron to do the job.
So do I return the new welder,or keep 'just in case'?
Now I'm thinking to making the old one, a DC welder, cost will be less than $100 in parts and couple of hours. Kindof a 'back burner' project.....
Jay
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)
Never burn your bridges, unless you can walk on water
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Amos
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Joined: 11 Sep 2009
Location: Ontario
Points: 1316
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Posted: 26 Mar 2018 at 8:38pm |
Jay, send it back. I bought a precision tig 185 years ago. I haven't used the ac 225 but once since then. That tig runs reverse polarity, ac, dc, and it lays the nicest beads I have ever seen a stick machine produce...oh and I have since bought a pt 275, it is just as nice as the 185 but the additional capacity and duty cycle make it shine.
Just my opinion...
Edited by Amos - 26 Mar 2018 at 8:50pm
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steve(ill)
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Joined: 11 Sep 2009
Location: illinois
Points: 81065
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Posted: 26 Mar 2018 at 9:15pm |
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If you can make the DC welder , DO THAT...... I sold my buzz box in 1993 and bought a 225 amp MILLER DC........... bests decision I ever made .... I don't know how to MAKE a DC welder out of the AC... but your right, you already got 75% of the parts !!
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Like them all, but love the "B"s.
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shameless dude
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Joined: 10 Apr 2017
Location: east NE
Points: 13607
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Posted: 26 Mar 2018 at 10:01pm |
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guess that makes AMOS the oldest dude on the forum? lol
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JohnCO
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Joined: 11 Sep 2009
Location: Niwot Colo
Points: 8992
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Posted: 26 Mar 2018 at 10:21pm |
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Does it run on candle power or whale oil?
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"If at first you don't succeed, get a bigger hammer"
Allis Express participant
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Amos
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Joined: 11 Sep 2009
Location: Ontario
Points: 1316
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Posted: 27 Mar 2018 at 5:00am |
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lol Shameless, 185 is model number....you can find humor anywhere can't you?
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Tbone95
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Joined: 31 Aug 2012
Location: Michigan
Points: 11600
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Posted: 27 Mar 2018 at 7:28am |
So, you ordered a switch AND bought a new welder, and NOW wonder what you should do.....makes sense 
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Ted J
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Joined: 05 Jul 2010
Location: La Crosse, WI
Points: 18821
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Posted: 27 Mar 2018 at 7:35am |
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Take that new welder back and buy more rods.....
IF I knew how,,,,,,,I'd turn it into a AC/DC in a heartbeat. You know how to do all that stuff, so,,,,,,,,,,"Git er done".
You can make a video of how you do it and then the rest of us idjuts could learn how....
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"Allis-Express"
19?? WC / 1941 C / 1952 CA / 1956 WD45 / 1957 WD45 / 1958 D-17
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jaybmiller
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Joined: 12 Sep 2009
Location: Greensville,Ont
Points: 22443
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Posted: 27 Mar 2018 at 7:44am |
lots of videos /sites about it just google 'converting ac welder to dc' one I found http://weldingweb.com/showthread.php?353121-Lincoln-225-conversion-to-DC I've found a big diode bridge for $40 to replace the 6 smaller ones .need to get a dead micrrowave too... oh well, on the back burner for now.
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)
Never burn your bridges, unless you can walk on water
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Coke-in-MN
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Joined: 12 Sep 2009
Location: Afton MN
Points: 41567
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Posted: 27 Mar 2018 at 8:51am |
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took my Miller 180 and built a fullwave bridge for it to make it a DC machine - works OK but then i bought the POW CON unit with wire feed and DC as a unit . (most small DC machines are 1/2 wave rectified) The Pow Con is full wave but the frequency is boosted so the lag between waves is small - also uses high voltage transformed up (inverter technology) to make full unit lighter and higher duty cycle .
So now I have my Miller 304 unit also which sons girl friend says is hers now as she does all the welding for him on his skid loader attachments .
I have a bunch of 500 Amp diodes now left from when I closed the shop is worked in - we had a large plating area and these were from plating rectifiers that were about the size of refrigerators . Keep thinking I need to sell the dang things as sure dont need them now, but most people have no idea about diodes that size or high of amperage.
Edited by Coke-in-MN - 27 Mar 2018 at 8:55am
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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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