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  • Davek0974's Avatar
    05-08-2018, 06:35 AM
    Davek0974 replied to a thread Repeatable shaft sensing in General
    Thanks Matt - this was indeed the best-fit option, tool setter arrived today from China, fitted and customer very happy, looks professional and...
    24 replies | 1042 view(s)
  • Davek0974's Avatar
    05-04-2018, 03:45 AM
    Davek0974 started a thread OT - Hot tub heating in General
    Before i dash out and buy a power meter plug, anyone have any ideas if it is cheaper to maintain a hot tub at 38c 24/7 or to allow it to drop to say...
    7 replies | 399 view(s)
  • Davek0974's Avatar
    05-02-2018, 10:04 AM
    Davek0974 replied to a thread Repeatable shaft sensing in General
    Yes, no problem, there is plenty of return travel. ;)
    24 replies | 1042 view(s)
  • Davek0974's Avatar
    05-02-2018, 07:39 AM
    Davek0974 replied to a thread My first metal lathe in General
    yes plus fully synthetic but costs. Really, you will not need it unless hogging big cuts all day, every day. If you choose carbide tip tooling...
    66 replies | 5873 view(s)
  • Davek0974's Avatar
    05-02-2018, 07:00 AM
    Davek0974 replied to a thread My first metal lathe in General
    IMHO i would not go with flood - it smells, turns sour, can cause dermatitis and generally is not needed in a home shop. I tried and quickly removed...
    66 replies | 5873 view(s)
  • Davek0974's Avatar
    05-02-2018, 03:25 AM
    Davek0974 replied to a thread Repeatable shaft sensing in General
    Just got a quote back from the tool setter people mentioned in an earlier post (thanks) It boasts an accuracy of 0.001mm but i'll take that under...
    24 replies | 1042 view(s)
  • Davek0974's Avatar
    05-02-2018, 02:15 AM
    Davek0974 replied to a thread Repeatable shaft sensing in General
    Thanks all, It does not matter about the return move - its only the forward move to detect, the rod will retract some distance before approaching...
    24 replies | 1042 view(s)
  • Davek0974's Avatar
    05-01-2018, 04:41 PM
    Davek0974 replied to a thread Repeatable shaft sensing in General
    Just found these, mechanical, with 0.01mm accuracy ...
    24 replies | 1042 view(s)
  • Davek0974's Avatar
    05-01-2018, 03:30 PM
    Davek0974 replied to a thread Repeatable shaft sensing in General
    Nah its logical OR - "The output is "true" if either or both of the inputs are "true." If both inputs are "false," then the output is "false." :) ...
    24 replies | 1042 view(s)
  • Davek0974's Avatar
    05-01-2018, 03:09 PM
    Davek0974 replied to a thread Repeatable shaft sensing in General
    downside is it means getting power to the switch area plus the N/C signal needs to be in series with another switch so its an OR setup.;)
    24 replies | 1042 view(s)
  • Davek0974's Avatar
    05-01-2018, 03:03 PM
    Davek0974 replied to a thread Repeatable shaft sensing in General
    thanks all, yes the end of the rod is available and open. a transfer crank and decent switch could be all thats needed and certainly worth testing...
    24 replies | 1042 view(s)
  • Davek0974's Avatar
    05-01-2018, 09:24 AM
    Davek0974 replied to a thread Repeatable shaft sensing in General
    maybe called dry contacts - i.e. a N/C switch that is not connected to anything internally as opposed to semiconductor outputs :)
    24 replies | 1042 view(s)
  • Davek0974's Avatar
    05-01-2018, 09:15 AM
    Davek0974 replied to a thread Repeatable shaft sensing in General
    Hi, not rotating, but can rotate - its free floating, pushed by another object, runs in a linear bushing, 8mm dia, ground steel. Micro switch...
    24 replies | 1042 view(s)
  • Davek0974's Avatar
    05-01-2018, 09:12 AM
    Davek0974 replied to a thread Repeatable shaft sensing in General
    Very nice, have asked if there is a fast delivery option.
    24 replies | 1042 view(s)
  • Davek0974's Avatar
    05-01-2018, 07:11 AM
    Hi all, what would be the best way to detect a small shaft that moves back and forwards slowly:- I need a repeatable way of registering when...
    24 replies | 1042 view(s)
  • Davek0974's Avatar
    04-28-2018, 02:53 AM
    I just knocked them back on the steam engines i built, use a file and stop at the surface - just remove the flash. This happens on all the wheels...
    170 replies | 12092 view(s)
  • Davek0974's Avatar
    04-26-2018, 03:18 PM
    Amazing :)
    170 replies | 12092 view(s)
  • Davek0974's Avatar
    04-23-2018, 03:48 PM
    Thanks, i'll try floating the head in. These bearings run in oil, this one was built that way, oil cup on side of head. Maybe when i need new...
    5 replies | 280 view(s)
  • Davek0974's Avatar
    04-23-2018, 02:31 PM
    Ok thanks It gets pretty warm after an hour or so running at 4000rpm. I'll disconnect everything so all i have is the motor, belt and spindle,...
    5 replies | 280 view(s)
  • Davek0974's Avatar
    04-23-2018, 02:22 PM
    Davek0974 replied to a thread Bent spindle in General
    Thanks all, good videos there. I measured the runout at around 1.2mmTIR so pretty bent really :) Located the high spot, got it in the press and...
    14 replies | 1043 view(s)
  • Davek0974's Avatar
    04-23-2018, 10:19 AM
    Slotting heads are worth the weight in gold, almost ;) A working one in the UK would easily fetch 500 alone.
    13 replies | 810 view(s)
  • Davek0974's Avatar
    04-23-2018, 10:14 AM
    Can anyone confirm or deny that on a Bridgeport series1 with (what used to be) a 2J head, the back-gear drive-train is running 100% of the time the...
    5 replies | 280 view(s)
  • Davek0974's Avatar
    04-22-2018, 12:26 PM
    Davek0974 replied to a thread Bent spindle in General
    I have not pulled it apart yet, it has not been overloaded in my ownership - i run mostly aluminium and small tooling. It didn't look twisted when i...
    14 replies | 1043 view(s)
  • Davek0974's Avatar
    04-21-2018, 05:20 PM
    Davek0974 replied to a thread Bent spindle in General
    Thanks all, yes its the splined section that is bent - you can clearly see the banana shape if you look down from the top with the spindle...
    14 replies | 1043 view(s)
  • Davek0974's Avatar
    04-21-2018, 12:35 PM
    Davek0974 started a thread Bent spindle in General
    I have finally discovered the cause of the vibration in my Bridgeport since fitting a BT/QC30 spindle - the splined section is bent. It runs true...
    14 replies | 1043 view(s)
  • Davek0974's Avatar
    04-21-2018, 02:51 AM
    Thanks - i don't have any gauge pins or slips yet, i have a feeling thebeariungs will be made to tolerances way beyond what i use :)
    15 replies | 885 view(s)
  • Davek0974's Avatar
    04-20-2018, 09:02 AM
    Within reason you can calibrate the machine/software to whatever tolerance you like, putting aside mechanical limitations - steppers. drive screws...
    23 replies | 1128 view(s)
  • Davek0974's Avatar
    04-20-2018, 08:58 AM
    Thanks
    15 replies | 885 view(s)
  • Davek0974's Avatar
    04-20-2018, 07:37 AM
    Anyone know if ball bearings are made on-size and the fit is in the housing or vice-versa?? I have a 6208 bearing showing as 40mm id 80mm od and...
    15 replies | 885 view(s)
  • Davek0974's Avatar
    04-19-2018, 06:11 AM
    https://www.ebay.co.uk/itm/24-Magnetic-Push-Sweeper-Rolling-Broom-Steel-Metal-Pick-Up-Sweeping-Floor-Tool/391757458199?hash=item5b36906b17:g:DuMAAOSwk...
    14 replies | 1064 view(s)
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About Davek0974

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About Davek0974
Biography:
Typical mad home engineer!
Location:
Hertfordshire, England
Interests:
Engineering, Photography, Food.
Occupation:
Production Manager, Printers

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