Tool capacity.... and Minimill vs OM
Close
Login to Your Account
Likes Likes:  0
Results 1 to 11 of 11
  1. #1
    Join Date
    Dec 2018
    Country
    UNITED STATES
    State/Province
    California
    Posts
    7
    Post Thanks / Like
    Likes (Given)
    1
    Likes (Received)
    1

    Default Tool capacity.... and Minimill vs OM

    I'm looking at upgrading from my Tormach to a haas.
    This is for small prototype parts, very rarely do I make more than one of anything.

    If I list the tools I find myself using I rapidly go past 10 tools.
    I can probably restrict single runs/operations to 10 tools, but I'd like to have at least 20 available.

    I'm really limited in space and door height. I believe I can get a Mini-Mill in the garage, but I believe the mini-mill-2 is too high.

    The minimill is limited to 10 tools.

    How quickly can on change the tools.... IE are tools always numbered 1 to 10, or can I say have a library of 30 tools and tell the machine that tool 26 is loaded in slot 7?

    Every thing I machine is aluminum and small, I'm really tempted by a used OM-2A on Ebay right now The 30K rpm spindle and 20 tools is really attractive.... I almost never use a cutter bigger than 3/8 would I regret the ISO-20 30K spindle?


    Lastly looking at other machines most are three phase, whatt can I run on a a phase converter and 50A 220V breaker? Could I run a VF-1 with that?

    VF-1?



    Thoughts...

  2. #2
    Join Date
    Oct 2019
    Country
    UNITED STATES
    State/Province
    Texas
    Posts
    140
    Post Thanks / Like
    Likes (Given)
    12
    Likes (Received)
    16

    Default

    Quote Originally Posted by pbreed View Post
    ....Lastly looking at other machines most are three phase, whatt can I run on a a phase converter and 50A 220V breaker? Could I run a VF-1 with that?

    VF-1?

    Thoughts...

    Subject to a lot of controversy, but I believe you could run even a VF4 on that with a rotary phase converter. Also guessing your 50a is an open/available breaker size and not necessarily your amp limit.

  3. #3
    Join Date
    Dec 2018
    Country
    UNITED STATES
    State/Province
    California
    Posts
    7
    Post Thanks / Like
    Likes (Given)
    1
    Likes (Received)
    1

    Default

    Actually it is close to my Amp limit. We are in an older subdivision with 50 yr old buried power lines.
    The transformer that feeds 4 houses on our corner is 50 KVA.

  4. #4
    Join Date
    Oct 2011
    Location
    Stockholm, Sweden
    Posts
    128
    Post Thanks / Like
    Likes (Given)
    1
    Likes (Received)
    49

    Default

    I have run Officemills for 10 years. For the right things they are good, but you have to undrestand the spindles limitations. If you want to remove alot of material it is not the right machine. 3/8" cutter is absolute maximum, watch gauge line and take light cuts at 30K rpm in alu. Tool changes are also quite slow.
    If you make small parts in alu or plastic it is a good machine.

    /Staffan

  5. #5
    Join Date
    Jul 2006
    Location
    Hillsboro, New Hampshire
    Posts
    7,764
    Post Thanks / Like
    Likes (Given)
    1814
    Likes (Received)
    5462

    Default

    That's a reasonbly clean machine, price would get you a full VF-4 or so of a similar year with much more utility for most work. But if you have to fit it in a garage with limited power, the office mill might not be a bad choice.

    BTW, these are some "funky" looking holders - I've never seen this style before!*

    *I've lead a sheltered life...

    s-l1600.jpg

  6. #6
    Join Date
    Dec 2003
    Location
    poulsbo, wa, usa
    Posts
    821
    Post Thanks / Like
    Likes (Given)
    56
    Likes (Received)
    342

    Default

    you can run a vf4 off the 50 amp 220 breaker ,, I run one hard on a 60 amp breaker and have for years ,, its a SS model and I have had the spindle in the red most days ..

    I would say look at a 2008 or newer mini mill or even a TM mill .. the OM mill is super small and the holders are not vary standard being a ISO 20 ...

    Machines are just like cars and you want something standard,,, there is a TON of mini mills out there and I have only ever seen one OM. TM seen to be about the same price used as a mini but there not half the machine a mini is ...

  7. #7
    Join Date
    Oct 2019
    Country
    UNITED STATES
    State/Province
    Texas
    Posts
    140
    Post Thanks / Like
    Likes (Given)
    12
    Likes (Received)
    16

    Default

    I have phase converter with 20hp 98 VF-OE on a 45a breaker. Other members running more on less.
    VF-0 thru VF-2 will fit in a garage with only minor mods (2'x4' ceiling vault between rafters)

  8. #8
    Join Date
    Oct 2019
    Country
    UNITED STATES
    State/Province
    Texas
    Posts
    140
    Post Thanks / Like
    Likes (Given)
    12
    Likes (Received)
    16

    Default

    Below is a link to a YouTuber with an OM-2. Reading between the lines the video is more or less about realizing machine limitations. Note the size of the part in his hand as you see it in the machine.
    YouTube

  9. #9
    Join Date
    Apr 2018
    Country
    UNITED KINGDOM
    Posts
    2,595
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    1213

    Default

    Quote Originally Posted by Tjugo7 View Post
    I have run Officemills for 10 years. For the right things they are good, but you have to undrestand the spindles limitations. If you want to remove alot of material it is not the right machine. 3/8" cutter is absolute maximum, watch gauge line and take light cuts at 30K rpm in alu. Tool changes are also quite slow.
    If you make small parts in alu or plastic it is a good machine.
    I better look that one up. We've had a few people who wanted one. They are supposedly super for tiny parts, but as you point out, not that great for anything bigger. But for tiny, they are like $100,000 cheaper than the next better machine.

    kpotter oughta look this one up ...

  10. #10
    Join Date
    Sep 2015
    Country
    UNITED STATES
    State/Province
    Ohio
    Posts
    1,157
    Post Thanks / Like
    Likes (Given)
    708
    Likes (Received)
    1144

    Default

    To answer the other part of your question

    Yes you can use more than 10 tools but you have to manually change them after T10.
    You would not call a toolchange, just prog. stop, hand change, cycle start. Use H11, H12, etc.
    You would also have to turn off H&T Code Agreement in the Settings.

  11. #11
    Join Date
    Jan 2011
    Location
    South Florida
    Posts
    650
    Post Thanks / Like
    Likes (Given)
    66
    Likes (Received)
    120

    Default

    I ran two VF-2's and a Hardinge CNC lathe with a 20HP rotary phase converter for years on a 40 amp breaker.


Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •