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Type: Posts; User: hermetic

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    Grafton Drill Press Rebuild

    Hi all, this one led me on a merry dance, but I won through in the end, and although I started off with no intentions of totally rebuilding the drill head and the motor, thats what ended up...
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    that is the floor! Having had to work on an...

    that is the floor! Having had to work on an uneven pitted floor for about twenty years, one which was made from concrete that was more ballast than cement, trolley jacks jammed in potholes, cars...
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    Covmac lathe rebuild

    Hi guys, here is a link to the rebuild of my other lathe, a 13" geared head Covmac, made during WW2, not in Coventry, but in Cleckheaton, West Yorkshire, UK, by P&C Garnett, a textile machine...
  4. "The powder doesn't sound good"No Tyrone, thats...

    "The powder doesn't sound good"No Tyrone, thats exactly what I thought, just like a grey/black stain in the flush, but you could see it in the oil as well, and it had settled out around the drain...
  5. Thanks Tyrone, I learned on this DS&G 13Z my...

    Thanks Tyrone, I learned on this DS&G 13Z my first lathe, in 1975, The Colchester still has a couple of issues, main one being spindle bearings, but luckily I was able to buy some from Ebay for not...
  6. Colchester Student roundhead strip and refurb.

    Hi guys, I have been keeping a low profile for the last couple of years whilst I completed the refurbish on my workshop. It has taken a lot longer than I thought, but life gets in the way of best...
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    Yes it SHOULD, but it is rated by the amount of...

    Yes it SHOULD, but it is rated by the amount of Watts it dissipates, not the amount of energy it produces, so as I said in the first place, a motor which dissipates 746 watts, will not produce 1hp of...
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    I fully understand that the copper doesn't care...

    I fully understand that the copper doesn't care about the temperature, but the fact still remains that the heat comes from Watts dissipated as heat rather than torque, and it is rapid heating and...
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    Read my post again! I did say that single phase...

    Read my post again! I did say that single phase motors are much less efficient than three phase, it is only three phase motors that get to 80% and beyond. I live in the UK, virtually all motors sold...
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    A motor that is rated at 1hp produces 1hp of...

    A motor that is rated at 1hp produces 1hp of mechanical energy. A motor rated at 746 Watts, the theoretical equivalent of 1hp does not produce 1hp of mechanical energy, it produces 1hp minus the...
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    If the starter is for a 3hp max motor, and you...

    If the starter is for a 3hp max motor, and you are using it on a 5hp compressor, the overloads will not be large enough for the initial starting load, and it sounds like they have quit! Look at the...
  12. possibly the shock from the impact on the pole...

    possibly the shock from the impact on the pole made two of the conductors touch together for a second, seen this happen on 32kV overheads, lots of noise and sparks, but the wires stayed on the poles!
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    I little OT, but you will get my drift along the...

    I little OT, but you will get my drift along the way! About 7 years ago, I (acting as site manager, electrical engineer, and general do everything dogsbody ) refurbished and converted a disused...
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    when you become the custodian of a preowned tool,...

    when you become the custodian of a preowned tool, you should never remove the initials of the original owner, you should simply add your initials alongside them, as should their future owners. All...
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    Not noted in the artical - this would have been...

    Not noted in the artical - this would have been Alcoa at the time. ?

    Do you mean that SAPA used to belong to Alcoa, and they sold it on to Norsk Hydro, possibly when this fraud came to someones...
  16. I took a "documented batch failure" to be a...

    I took a "documented batch failure" to be a little more than the limited warranty on the tin! To say that about the product you manufacture IS an admission of liability. The Co that supplied the...
  17. If this is a "documented batch failure of the...

    If this is a "documented batch failure of the sealant product" then whoever MANUFACTURED the product has already accepted liability, time for a conference with all parties to put this rightin a...
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    I think they were all intended to produce more...

    I think they were all intended to produce more power than they consumed, the fact that they all have so far failed to do so, and have cost an absolute fortune to build is an indication of what a...
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    Yes, the start capacitor has failed, or the...

    Yes, the start capacitor has failed, or the centrifugal switch is not closing, or possibly the start winding is faulty, if it is single phase, and a single phase motor will run in either direction,...
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    try cleaning the contacts on the centrifugal...

    try cleaning the contacts on the centrifugal switch, sound like they may be closed, but not making contact electrically, common problem.
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    No problems with lead pipe or lead based solder...

    No problems with lead pipe or lead based solder in alkaline water areas, because it is quickly coated with a layer of lime scale, but in slightly acid water areas, the lead oxide dissolves in the...
  22. Thread: Denford

    by hermetic
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    as the Denford is a british made machine, you...

    as the Denford is a british made machine, you might try some of the uk cnc sites, I know there are still people using micromills, try posting to as many sites as you can find, Madmodder for a start...
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    A shaper will do just about any job a mill will...

    A shaper will do just about any job a mill will do, and a shaper will produce much better flat surfaces and better finish than a mill, and do it all with a hunk of sharpened HSS as you would use in a...
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    Although they cut wood, not metal, Marc Brunels...

    Although they cut wood, not metal, Marc Brunels admiralty block making machines used milling style cutters, and were already designed and approved by the admiralty in 1802.I don't think any one...
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    I find the film a bit odd, when you consider that...

    I find the film a bit odd, when you consider that the micrometer invention is credited to William Gascoigne who lived near leeds in Yorkshire, UK, and died at the battle of Marston Moor in 1642, many...
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