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Type: Posts; User: BaronJ

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  1. Replies
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    Views
    39,135

    Bearing for height adjuster !

    Hi Guys,

    I've started getting on with the height adjustment for the motor and grinding spindle assembly. The threaded rod that will be used to adjust the position of the grinding wheel on the...
  2. Thread: Breaking taps !

    by BaronJ
    Replies
    0
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    13

    Breaking taps !

    Hi Guys,

    How to break a good tap ! Drop it onto a tiled floor :C I haven't broken a tap in years !

    I've now managed to do this trick twice over the past couple of weeks ! Both carbon steel...
  3. Replies
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    Hi Phaser, A pin down the bore and a plate...

    Hi Phaser,

    A pin down the bore and a plate under the back. A pair of "G" clamps and a Bar across the pin. Heat the alloy pulley if wont start to move.

    Once you’ve got it moving then don't...
  4. Replies
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    Hi Boris, Guys, If I were doing that radius by...

    Hi Boris, Guys,

    If I were doing that radius by milling on the lathe, I would use a 0.350 ball end milling cutter held in a collet chuck in the spindle. You will need to make a packing to get the...
  5. Replies
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    Hi Guys, The centrifugal switch on the lathe...

    Hi Guys,

    The centrifugal switch on the lathe is very quiet when starting up but makes a loud clunk when stopping. Compared to the one on my grinder which you can barely hear either way.
  6. Replies
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    Hi Scott, Guys, Welcome to the forums Scott. ...

    Hi Scott, Guys,

    Welcome to the forums Scott.

    The coating that is on the cast iron is caused by the tannin in the fruit ! As Greg suggests its the same sort of thing as seasoning on cast iron...
  7. Thread: Newbie Asks!

    by BaronJ
    Replies
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    465

    Hi Pete, Guys, I've not been around for a...

    Hi Pete, Guys,

    I've not been around for a couple of days, so a bit late to the party :)

    First, Welcome to the forums, lots of good guys here with many years of experience !

    Now my take on...
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    No ! I'm not into knife making :)

    No ! I'm not into knife making :)
  9. Replies
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    552

    Thanks Guys, I thought it odd that someone...

    Thanks Guys,

    I thought it odd that someone would throw out a carrier bag with about 15 various obviously new bearings in it. They were wet, but had been sitting in the rain for some time. A...
  10. Replies
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    552

    Scrapyard find !

    Hi Guys,

    I've been having a root around some new stuff in the local scrapyard. I picked up a plastic carrier bag with about a dozen bearing races in it. Among them were these three Timken ones
    ...
  11. Replies
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    39,135

    Motor and cartridge mount !

    Hi Guys,

    I've almost finished the work on the motor and grinding cartridge mountings. I finished boring the other side plate this morning then counter sunk the cap screw heads into the clamping...
  12. Replies
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    1,290

    Hi Steve, Yes my friend also "John" puts a...

    Hi Steve,

    Yes my friend also "John" puts a trolley jack and wood blocks under the press table to lift it or lower it. Usually when the part he is pressing out won't clear the ram. But I have...
  13. Replies
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    28,978

    Hello Mark, You need to edit your pictures and...

    Hello Mark,

    You need to edit your pictures and re-save them !

    The problem is the "EXIF" data that is stored with your picture, editing and saving will/should remove it, then the server at the...
  14. Replies
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    1,290

    Hi Steve, With the amount of weight that you...

    Hi Steve,

    With the amount of weight that you have got there you need some mechanism to keep it square as you lift or lower the table. Could I suggest a cable sling at each end and a winch. A...
  15. Thread: Power Factor

    by BaronJ
    Replies
    48
    Views
    1,310

    Hi AJ, Guys, Thanks for that explanation, you...

    Hi AJ, Guys,

    Thanks for that explanation, you put it far better than I !

    Its a lot of years past since I did any of this at Uni, I confess up front that I hated the maths but it was something...
  16. Replies
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    One side plate done !

    Hi Guys,

    Well after a good start setting up to drill and bore the side plates, getting all lined up and centred on the hole position, I drilled a 6 mm pilot hole through the plate. At first I...
  17. Thread: Power Factor

    by BaronJ
    Replies
    48
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    1,310

    Yes you are right it would be watts. ...

    Yes you are right it would be watts. Unfortunately without knowing the phase angle difference between the voltage and current you only have the manufactures PF value which will change with loading.
  18. Replies
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    Hi Guys, I've seen something similar where the...

    Hi Guys,

    I've seen something similar where the fan securing screw allowed the fan to migrate down the shaft to sit on top of the motor case, the heat melting the no longer rotating fan. I've also...
  19. Replies
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    Hi Guys, I've made tube expanders similar to...

    Hi Guys,

    I've made tube expanders similar to those in the video, and used them on both copper and aluminium tubes. They are easy to make and using mild steel for a one or two off usage, throw...
  20. Hi Guys, The problems with using magnets in...

    Hi Guys,

    The problems with using magnets in fluid flow coolant systems is that the speed of flow is often too fast for the magnet to grab the fine particles. Smaller particles move much more...
  21. Replies
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    39,135

    Spindle mounting plates !

    Hi Guys,

    I've been busy cutting pieces of 15 mm aluminium plate and machining to size as per drawing in previous post.

    389223 389221

    This picture is the central block that is intended to...
  22. Replies
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    39,135

    Spindle Mounting !

    Hi Guys,

    Now that I've got the grinding spindle finished and fitted the drive pulley, I've got to mount it on the motor block. To do this I propose to use some 15 mm thick alloy plate that I have...
  23. Thread: Power Factor

    by BaronJ
    Replies
    48
    Views
    1,310

    When you apply an a.c. voltage to a load that...

    When you apply an a.c. voltage to a load that comprises Inductors and capacitors you get a somewhat curious result. The current in the inductance and capacitance will not be in phase with the...
  24. Replies
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    Hi Bob, Guys, This is all about data...

    Hi Bob, Guys,

    This is all about data collection ! I agree with Stuart, Google is the prime suspect though just about every site that you interact with has started the verification trick. Having...
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    Hi Pipeclay, Guys, Yes I understand where you...

    Hi Pipeclay, Guys,

    Yes I understand where you are coming from. I found that feed was important as well ! The sweet spot for me seems to be around 350 rpm and 40 - 50 mm a minute at 15 to 20 thou...
  26. Replies
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    Hi Runpfy, I haven't been called a "Colonial"...

    Hi Runpfy,

    I haven't been called a "Colonial" for a very long time :U.

    Yes all the thread forms that you mention are still around ! My use of BA threads was simply because I have some quantity...
  27. Thread: Power Factor

    by BaronJ
    Replies
    48
    Views
    1,310

    Hi Stuart, Guys, Generators, inverters...

    Hi Stuart, Guys,



    Generators, inverters etc, are designed to supply a given amount of power/energy. As long as the load doesn’t exceed this value there isn't a problem. However the...
  28. Replies
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    Hi Bob, Guys, A trick that I use to get around...

    Hi Bob, Guys,

    A trick that I use to get around their Email address collection scheme is I use a dummy address like,
    "[email protected]" or "[email protected]". As long as it resolves to an apparently...
  29. Replies
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    Hi Guys, The rationale behind the design of my...

    Hi Guys,

    The rationale behind the design of my fly cutter was first, rigidity, 20 mm is the biggest diameter that I can hold in my tool collet on an MT3 arbour. Second was balance. A hole just...
  30. Thread: Power Factor

    by BaronJ
    Replies
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    Views
    1,310

    Good Morning Gentlemen, Power factor is a...

    Good Morning Gentlemen,

    Power factor is a function of the load not the source !

    The generator is rated to supply that amount of energy, the load only takes the amount of energy that that it...
  31. Hi Pete, I'm glad that you tried the...

    Hi Pete,

    I'm glad that you tried the capacitors and saw the effect that it made. Essentially the only difference between the treadmill power supply and using the scr/triac one is that the...
  32. Replies
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    Hi Pipeclay, My go to tool for that sort of...

    Hi Pipeclay,

    My go to tool for that sort of work is a fly cutter ! I'm sure you have seen pictures of the ones I make.

    389187 389188

    This one is a 20 mm thick 75 mm diameter disc on a 20 mm...
  33. Replies
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    Hi John, You are going to have to leave a...

    Hi John,

    You are going to have to leave a couple of thou for an oil film or its going to seize the spindle. A firm fit is fine for aligning the bores, but friction is going to heat up the...
  34. Thread: Power Factor

    by BaronJ
    Replies
    48
    Views
    1,310

    Hi Stuart, Energy in equals energy out ! If...

    Hi Stuart,

    Energy in equals energy out ! If there is no load then there are only losses to take into account. If the load is 1.5 Kw, then the energy in is only 1.5 Kw plus losses.
  35. Replies
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    More work on the Grindling Spindle !

    Hi Guys,

    Thanks for all the likes and thanks given, I do appreciate them !

    I've been looking around for a few weeks for some suitable thick wall steel tube that I could machine to make some...
  36. Hi Pete, Guys, I recall Michael a short time...

    Hi Pete, Guys,

    I recall Michael a short time ago, discussing a table vise that he had designed and said that Hemingway in the UK were going to market a kit and castings for it.

    I thought that...
  37. Replies
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    Hi Steve, Guys, I agree ! A decent band saw...

    Hi Steve, Guys,

    I agree ! A decent band saw is worth its weight in lack of back ache...
  38. Replies
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    Hi Mike, Could it be 9BA, that is 1.9 mm 64.9...

    Hi Mike,

    Could it be 9BA, that is 1.9 mm 64.9 tpi. I can't find anything around 56 tpi of that diameter,
  39. Thread: Power Factor

    by BaronJ
    Replies
    48
    Views
    1,310

    I think he has got it ! Paraphrasing from Eliza...

    I think he has got it ! Paraphrasing from Eliza DoLittle.

    In actuality there isn't any unused energy ! It all gets used somewhere and heating is the main result.
  40. Replies
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    3,764

    How about "CML" Coarse metric lead: ...

    How about "CML" Coarse metric lead:
    "NML" Normal metric lead:
  41. Thread: Power Factor

    by BaronJ
    Replies
    48
    Views
    1,310

    Hi Alan, Guys, AC theory has some quite...

    Hi Alan, Guys,

    AC theory has some quite difficult concepts to put together in order to understand it !

    You did a good job there !
  42. Replies
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    Hi Steve, Guys, If that hole in the lid is...

    Hi Steve, Guys,

    If that hole in the lid is just to create a vent, just put a wire grid over it and the hot gas will do the rest.
  43. Replies
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    2,764

    Hi Steve, PDF Data sheet, for the device in...

    Hi Steve,

    PDF Data sheet, for the device in the first picture !

    389039

    I've nothing on the Pressure control valve.
  44. Thread: Power Factor

    by BaronJ
    Replies
    48
    Views
    1,310

    Ohms law is quite correct for pure DC, but you...

    Ohms law is quite correct for pure DC, but you have to take into account inductive and capacitive currents and voltages which are not in phase. This gives rise to current flow at zero voltage. This...
  45. Replies
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    700

    Hi Guys, The laminator will help tremendously,...

    Hi Guys,

    The laminator will help tremendously, constant heating and constant pressure over the surface. I've used that method quite successfully for doing pcb's.
  46. Replies
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    2,764

    Hi Steve, Guys, There is a lot of spike...

    Hi Steve, Guys,

    There is a lot of spike suppression capacitors in there ! Makes me wonder why.
  47. Replies
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    Hi Steve, I've seen cylinders where the piston...

    Hi Steve,

    I've seen cylinders where the piston rod is totally black for most of its working length. The only chrome bits were at the top and bottom where the piston is fastened on. Yours looks...
  48. Replies
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    236

    Hi Lex, I'm a little confused ! Is that the...

    Hi Lex,

    I'm a little confused ! Is that the original Beaver mill Motor ? Or is it one you are thinking of obtaining.

    Brooks motors made many different motors but tended to use common castings...
  49. Replies
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    Hi Danshell, 0.5 mm thick alloy will work just...

    Hi Danshell,

    0.5 mm thick alloy will work just as well as thicker stuff, you are only looking at a few thou etch depth !
  50. Replies
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    Hi Lex, Guys, You would need a 230 volt input...

    Hi Lex, Guys,

    You would need a 230 volt input VFD with a 420 Volt three phase output to use that motor at its full potential !
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