Angle poise lamp for lathe/mill/bench use

Discussion in 'Hints & Tips' started by campingstoveman, Dec 31, 2010.

  1. campingstoveman

    campingstoveman Active Member

    Gentlemen,
    I have been having a tidy in workshop and decided to tidy wiring on angle poise lamp over lathe so took it down and then thought my mate had given me a better one. Found the new lamp and wired it up to a plug and thought I shall test it before fitting, didn't work, further investigation found one of the lamp pins was completely missing from lamp holder so removed lamp holder from old unit to find totally different thread. Shame I had to wreck old unit to get lamp holder out.
    Both angle poise now in bin and off to buy new one and wishing I had left well alone.

    Anyway back from Argos with my new lamp, un-boxed it and assembled it with the instructions and it mentioned a clamp instead of the heavy base. I found the clamp, which comes as a vertical and horizontal mount, and trotted out to the garage where it is now mounted on a cupboard above the lathe and is perfect for the job, it has a 11W energy saver = 75W lamp and is a nice crisp white light.
    If anybody interested its Cat No 430/8148 £17.99p

    Martin P
     
  2. martinpaff

    martinpaff Member

    Hi Martin

    I've have had an (almost) antique Anglepoise over my lathe for many years, and I quite agree; they're perfect for the job. I would caution though - energy savers are flourescent lights that flicker, albeit at a very high frequency. There is a theory that the stoboscopic effect can freeze the motion of the chuck and fool you into thinking the lathe is stationary, leading to an accident. Personally, I don't give the theory much truck: it would be an unhappy coincidence if spindle speed exactly matched lamp frequency (or a harmonic thereof), and you'd need to be a complete fool to not realise your lathe is running...

    Having said that; I use an incandescent reflector bulb in my Anglepoise (they flicker, but much less) JIC.

    Martin.
     
  3. admin

    admin New Member

    Not a chance with a 40 year old DSG, 7.5hp motor thundering away with a pile of straight cut gears in some nice thick oil :)

    P
     
  4. petternut

    petternut Administrator

    I have two Anglepoise aged 40 and 50. These days I need both for fine bench work.

    have fun
    Roland
     
  5. campingstoveman

    campingstoveman Active Member

    Gentlemen,

    I've had glasses on my nose since the age of five because of bad myopia and as the years have passed it has got a little better and I dont wear bottle bottoms like I did as a lad, now over the past few years I have had to resort to bi focals but even then I have to take my glasses off to see wire no etc. I actually find to much light a hinderance because of reflections particularly when I have my head in an electrical cabinet.

    Martin,

    As a machine to fitter I was always made aware of the use of flourescent tubes on machines but could never understand why the workshop ceilings where covered with them. Never had any bother with the strobe effect either.

    Martin P
     
  6. lambe

    lambe Member

    Most comercial and industrial sites use 3 phase, as phase angle is 1/3 out it breaks the harmonics effect. I'll bet the "Argos " lamp isn't around in 25 yrs time like the old anglepoise and if theres vibration don't forget that the coatings come off the inside of the flourescent tube allowing harmful U/V to be emitted so then you need sun tan lotion and shades! 8) :lol:
     
  7. campingstoveman

    campingstoveman Active Member

    The Angle poise may still be around, you just wont be able to buy lamps for them :D
    Already thought about vibration hence its mounted on a cupboard side isolated from the lathe, been using it for a few weeks now and looking to get another one for my milling machine.

    Martin P
     
  8. picklesquirt

    picklesquirt Member

    Lambe
    Excuse me buttinng in but you have at last come up with something I can can contribute to.
    Being pedantic ordinary glass as used in standard flourescent tubes will not leak dangerous u.v light even when the internal coating falls off. If you want harmful uv 200 nano meter ish the envelope has to be made of quartz. As in my pond uv steraliser. Tubes are mega bucks £30 for an 18W. You can not get a suntan behind glass, in car greenhouse etc.
    Regarding strobe effects a filament lamp will flicker at 2x the mains frequency i.e 100 Hz. So it should freeze something doing 6000 rpm. The higher the lamp wattage the less the effect as the filament has more thermal inertia- flywheel if you like.
    Compact fluorescent work at a much higher frequency, typically 40kHz ish so an object would have to be doing nearly 5 million rpm to freeze. This still would not happen due to the persistance of the fluorescent coating smoothing out the flicker.
    Please excuse me getting all technical but you moved into my field and I thought I could put something back for all the questions I have been asking.
    I'll go quiet now until I have some more silly questions on the Petter. Cutting gaskets at present.
     

Share This Page