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  • greystone's Avatar
    12-11-2018, 01:54 AM
    Lots o excellent comments .. imho .. my interest being machine tool spindle bearings of extreme accuracy and reliability. The machine tool or MT...
    20 replies | 1304 view(s)
  • greystone's Avatar
    11-07-2018, 10:18 PM
    I am not in the US but have shopped there in HD, walmart etc. The comments saying they crap products based on location are wrong. Where several...
    21 replies | 1885 view(s)
  • greystone's Avatar
    11-07-2018, 09:49 PM
    I visited shops that machine graphite. It is considered a horrible corrosive dangerous material that eats machines. All machines had big pipes to...
    14 replies | 1017 view(s)
  • greystone's Avatar
    11-07-2018, 08:03 PM
    My 12x lathe had a 1.5 kW output industrial ac motor (220V EU). And 4+4 speed ranges on hi/low. I only used the 50 (backgear) == 650 range, due...
    213 replies | 14108 view(s)
  • greystone's Avatar
    11-07-2018, 07:17 PM
    Modern cnc machines use a very simple plain bearing under extreme load that tends to last forever, almost. It is called a rotary union. A plain...
    14 replies | 1017 view(s)
  • greystone's Avatar
    11-01-2018, 02:22 PM
    greystone replied to a thread Close fitting parts in General
    You are in fact talking about 0.01 mm in relative size difference. A 0.01 mm clearance hole is a sliding fit and 0.02 mm is a slip fit. The 0.01...
    25 replies | 1995 view(s)
  • greystone's Avatar
    11-01-2018, 12:53 PM
    greystone replied to a thread Albrecht chucks in General
    Industrial machine taps last longest and are easiest. Spiral flutes are great but too brittle.
    27 replies | 2452 view(s)
  • greystone's Avatar
    10-31-2018, 05:55 PM
    Most all chemical stuff works better warm or hot. Maybe around 60-80C which will never harm anything. Water stuff can run 80C (should not). A...
    26 replies | 1772 view(s)
  • greystone's Avatar
    10-31-2018, 05:40 PM
    greystone replied to a thread Albrecht chucks in General
    Fwiw I have tapped about 13.000 holes in tool steel upto 12 mm with real industrial jacobs chucks, keyless, on Hitachi industrial lion drills. Wore...
    27 replies | 2452 view(s)
  • greystone's Avatar
    10-31-2018, 05:23 PM
    Previous explanations are correct. They also ignore the width of the lever contactor, which makes the problem a complex one, in terms of statics and...
    49 replies | 2932 view(s)
  • greystone's Avatar
    10-31-2018, 03:09 PM
    greystone replied to a thread threading drill rod? in General
    Drill rod is very easy to machine and leaves a beautiful finish. Harder looks better. Run about 1000 rpm with carbide inserts on 1".
    30 replies | 2205 view(s)
  • greystone's Avatar
    10-23-2018, 08:30 PM
    greystone replied to a thread Where do I start? in General
    I will give You a good honest reply. And my focus is mostly business issues. Average BP/lathe work can easily get you some work, of low value, of...
    80 replies | 6563 view(s)
  • greystone's Avatar
    10-23-2018, 08:13 PM
    As the others said. I was at a plant where our 3-4 biggish VF4/6 machines were machining CF 16/day for years. My feel is similar to router...
    13 replies | 788 view(s)
  • greystone's Avatar
    10-23-2018, 08:03 PM
    Really really cool stuff. I much admire it and much like it and used to use something like it at the air force technicals.
    28 replies | 3249 view(s)
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