timgunn1962

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  • from Lancashire
  • Member since May 17th 2015
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  • timgunn1962

    Replied to the thread VFD advice for DIY grinder.
    Post
    Inverterdrive are indeed pretty good for providing information and are usually pretty good on pricing too.

    I quite like the TEC Aluminium-frame motors. I feel they are a budget "real industrial" motor. We've used quite a few at work and they've…
  • timgunn1962

    Replied to the thread Little heat treat oven.
    Post
    Safe is a relative term........

    The chamber is big and the openings are small. If you fill the chamber with a gas/air mixture and THEN ignite it, you can expect exciting things to happen....


    The ends of Mark's are just ceramic fibre board cut to fit…
  • timgunn1962

    Replied to the thread VFD advice for DIY grinder.
    Post
    Most standard 3-phase motors below about 2.2 kW, 3 HP are wound for 230V in Delta and 400V in star. These will work from a 230V input VFD when connected in Delta.

    In My Humble Opinion (rough translation: others might disagree but they will be wrong),…
  • timgunn1962

    Replied to the thread Amal gas injectors for forge use.
    Post
    As have I, so you are covered for availability Josh.

    I don't think the PM facility is available without a paid subscription. If some mutual acquaintance would be good enough to either send me Luddite-friendly contact details for Josh, or can send Josh…
  • timgunn1962

    Replied to the thread Amal gas injectors for forge use.
    Post
    Archiving sounds far too organised John. Between BB and Photobucket, it's gone.

    For most of the stuff most normal smiths (oxymoron?) will want to do, the standard Burlen/Amal jetting for Butane seems pretty much ideal.

  • timgunn1962

    Replied to the thread Cheapo set up.
    Post
    Looking at the picture, the thermocouple colour is less bright than the hottest part of the blade. The thermocouple temperature is presumably in the 840-880 degC range you quoted and the hottest part of the blade therefore seems to be significantly…
  • timgunn1962

    Replied to the thread Cheapo set up.
    Post
    (Quote from ggfh)



    Luke's 3rd pic in the OP shows a pronounced variation in colour, and therefore in temperature, across the workpiece. It's not easy to estimate how great the difference was though. I think there may have been more consistency to come…