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Thread: I bought a Bridgport

  1. #11
    Stickerman's Avatar
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    Get a VFD instead of a phase convertor. With that you can change speeds electronically. My VFD was only $150 for a 2hp motor. You can put a potentiometer on the machine to control the frequency/speed. Mine is hooked up through a computer for my CNC converted mill and it starts the motor, changes speeds, reverses and stops the motor.

    http://www.factorymation.net/s.nl/it...=2&category=32

    Here are my new toys. I still need to get a good Bridgeport style mill for the projects where you need to have some sort of feel when machining.

    http://ak-builder.com/ak/images/machines.jpg
    http://www.ak-builder.com

  2. #12
    hotbarrel's Avatar
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    stickman
    YES!!! that is exactly what I have decided to do, HOWEVER you have pointed me in the correct direction to buy it. grainger wanted $302 for basicaly the same thing YIKES.. thanks very much for the link.. I think I will be ordering one in a couple days... shoot at that price I may get a seperat one for my 3ph power feed too!!

    I looked into a phase box and I was told that it would only be 3ph on staRT UP THEN DROP BACK TO 2 PH , no thanks.
    I looked into a second 3 ph motor as a phase generator however further detailed invertigation showes that you get uneven current potental & V on the legs also 2 legs are still 180 out and the third could end up allmose anyware. true 3ph will be all 120 degrees out and have balanced V . a well made balanced rotory typ will have caps. of proper size installed to balance all 3 legs out. this is bigger money ..
    so an inverter. "VFD" seemes clearly the best method. inexpensive, all legs balanced, inexpencive, dose not take up a bunch of room. not to mention the added versitility with the ability to vary the frequancy! clearly the best of all choises.
    now I have to hope the motor is still good!! "they said it was" ....
    thanks again stickman for the link!!
    HB

  3. #13
    Gunco Member wiley's Avatar
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    Quote Originally Posted by Tomtbo
    Congratulations! I'm a bench-top owner, and wish I had more XYZs!

    When you say more XYZ's, how many do you have now. I'd like to get a small affordable mill so I talked to my local machinist who has a Bridgeport and he said don't buy the mini-mill. At least get the next size up mill-drill {HF 33686} because there's more XYZ travel. Anybody set me straight on what I need for this hobby?

  4. #14
    Gunco Regular Tailgunner's Avatar
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    Quote Originally Posted by wiley
    When you say more XYZ's, how many do you have now. I'd like to get a small affordable mill so I talked to my local machinist who has a Bridgeport and he said don't buy the mini-mill. At least get the next size up mill-drill {HF 33686} because there's more XYZ travel. Anybody set me straight on what I need for this hobby?
    It all comes down to how much floor space you have and how much budget you've got to work with. You can get started with a mini mill, but it won't be long and you'll want to do something that the mini doesn't have the capacity to handle. You can't ever go wrong by going bigger when buying machinery.

    As a baseline, knee mills like Hotbarrel's Bridgeport have 30 to 35 inches of side to side travel, 12 inches of cross slide travel, and 16 inches of vertical travel. My grandfather was a gunsmith by profession and used a knee mill about half that size in his shop.

    I'd suggest 18"x 6"x 8" at a minimum for a mill you won't outgrow too quickly to get your money's worth out of it.

  5. #15
    hotbarrel's Avatar
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    harbor freight has a very nice machine on sale for $899 realy a prety good deal! it takes R8 collets so it is easy to find tooling. I was going to buy it till I found this deal , so I would recomend the HF tool , it is a bench mill but 700 pounds with a fairly large collum so it should be prety solid. I forget the travel specs but I felt it was plenty big enough. WAY better than a mini. as mentioned above "it wont be long till you need a bigger one" just my 2 cent

  6. #16
    Class 07 FFL/SOT dinkydow's Avatar
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    Why not just change the 3 ph 1.5 hp motor to a 2 hp single phase? I did that with a Bridgeport years ago by changing the motor mtg plate & motor.
    www.wellcoarms.com

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  7. #17
    Class 07 FFL/SOT dinkydow's Avatar
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    www.wellcoarms.com

    Roger Baldwin,Founder of the ACLU: "We are for Socialism,disarmament and ultimately for abolishing the State itself...we seek the social ownership of property...and the sole control of those who produce wealth.Communism is the goal."

    WOLVERINES!

  8. #18
    rbthntr64's Avatar
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    DD,
    I think the 110 motor uses more current. That is what I was told any way from a friend that is in the business.
    Freedom is not free. Some will perish to preserve it for the many. Just as our Forefathers did before us, we must take up the battle and not waver. Victory is our only option.

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