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Thread: Arno Mill

  1. #1
    Join Date
    Mar 2009
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    Default Arno Mill

    Greetings Chaps. I have just completed a job on the Arno mill and to show that it is useable I have included these pics. The castings are the Brake shaft brackets from an N class conversion I am working on. It was the first chance I have had to use the 8 point cutter in the arsenal. There are two of these brackets and I was asked to remove about 900 thous to facilitate welding them onto the brake frame stay on the Locomotive. I did 4 200 thou cuts and one 100 thou to finish. I used a slow feed so as not to punish the machine. The other pic is of some adjustable height machine stands which come in handy when supporting work. The small blocks in the groove a to push work up against to get jobs parallel to the table. Hope this is of interest yours 4-6-4

  2. #2
    Ueee's Avatar
    Ueee is offline Blacksmith, Cabinetmaker, Machinist, Messmaker
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    Thanks 4-6-4,
    Great tip on the blocks in the t slots yet another one to remember off this forum.
    Nice looking mill, I really kick myself these days that i didn't even look at a second hand one when i bought my HM50 POS.
    1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.

  3. #3
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    hi 4 6 4,

    5mm cut's, that's spitting chip's. what RPM did you spin the cutter and what feed rate ?

    hahaha, I know lotsa Q's, did you run coolant ?

    Bloody chunky cutter.

    john

  4. #4
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    Hey 4-6-4 , I'd love to see more photos of the mill. It looks like a nice bit of gear.

    And Ewan, you deserve to get kicked. Chinese before Continental! What were you thinking?

  5. #5
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    Gotta love carbide and rigidity.

    Is that your artistic handy work on the lugs just under ram?

  6. #6
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    Default Arno mill

    Greetings chaps, I will take note of the revs and feed I used when I go to Newport today. The Mill is Italian and was imported by Demco to try and get a market share from McPherson's. This model the one A was sold for 1.600 pounds mainly to schools and some Govt departments. There is no rapid traverse on the 1 A probably to keep the kids at bay. The machine is graduated in Imperial with two ranges of speeds and feeds with a spindle reverse. 40 International taper and a two axis digital readout. It is a delight to use, I had a Parkinson before this but it had 40 inter in the nose and Morse Taper in the vertical head. It went to Wangaratta.. I will post more tonight. Yours 4-6-4

  7. #7
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    Default Arno Mill

    Greetings Chaps. Here are some additional pics and information about the mill. I used about 200 revs and a 5/8 feed for the 200 thou cuts on the brake brackets there were 4 passes plus one of 100 thou. The feed rate took about 12 minutes to do the approx 12 inch cut. The machine did not complain. But I think in industry it would have been a lot faster.First shot is the front of the machine the two levers to the right ate the up-down and the cross feed selectors on the left is the feed engaging lever. Care has to be taken because all three directions can be engaged at the same time. The second is the front from a different angle. three is the side of the beast showing the speed and feed selecto and the direction of rotation for thr head. Four are the two carbide cutter the large is for facing and the smaller is for working a square angle. Five is some of the attachments, The slotting head rotary table and Dividing head plus some collets which are 40 inter taper.. Last is a general view with the New Visby in the background. The big green beast behind the Arno is a vintage Jig Borer of ancient vintage.

  8. #8
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    Thanks for for the info and pic's 4 6 4.

    ps. the dividing head looks like it is giving that pine bench a bit of curry

  9. #9
    Dave J Guest

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    Thanks from me to for the pictures, that is a nice solid mill. I bet it weighs a bit.

    Dave

  10. #10
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    Default Arno mill

    Greetings chaps the Dividing head is a monster I am about to use it to Caselate some nuts should be interesting. The previous owner assembled the bits from Auctions in Geelong. There is also an Astra (I think) boring and facing head. I have never had on before but I will have a play with it and let you know then results. Also a large piece of gear is the Clarkson Auto lock, I have two Collets but they are both 1 inch. Its a dream to use with all the extras. Yours 4-6-4

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