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  1. Replies
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    That is a collection .. especially the Nitric .....

    That is a collection .. especially the Nitric ..

    Remember nitric when a year 10 or was it 11 student thought a few drops in a pencil case would be fun. Teacher and lab staff went ballistic and...
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    Try The green shed or Officewrx... as these are...

    Try The green shed or Officewrx... as these are the vendors listed by the maker
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    Oomph

    The better half works in a library and has the problem of sticky labels, chewy and other unmentionables on books, benches, shelves, chairs etc. :oo:

    She used to use Eucalyptus oil but recently...
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    K

    Optimism is a word that springs to mind!
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    Wow, It has taken me at least 3 viewings to...

    Wow,


    It has taken me at least 3 viewings to understand all the steps.
    There is a lot hidden in those few lines of text.
    How did you make a start with the CAD?
    Having just lost a set of keys...
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    now that is close. glad you are ok. go careful.

    now that is close. glad you are ok. go careful.
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    Won't go near 1 except to hope the...

    Won't go near 1 except to hope the recommunication is effective and positive.

    As for 2, glad you picked it before dismantling started. I find it scary how my preconceptions can colour my thinking...
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    Thanks for the corrections. always thought care...

    Thanks for the corrections. always thought care was needed around the enamel but obviously tougher than I thought.

    Phil's clean up looks good.
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    like the spot test idea, and the multitude of...

    like the spot test idea, and the multitude of approaches to drying.

    My contribution is minimise physical abrasion On windings when cleaning..... insulation needed for healthy motor.

    No...
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    plus the need for a megawatt of white light to...

    plus the need for a megawatt of white light to pick up the detail when a single candle used to be sufficient.

    The doublet as a distortion free magnifier is a new insight for me.
    Thank you for...
  11. Thread: LED Worklight

    by HavinaGo
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    10 ponds!!! Wow, how things change in a couple of...

    10 ponds!!! Wow, how things change in a couple of years.
    When I made mine, the downright globe ( LED. 9watts ~ 900 lumens) cost $35
    I had an old microphone goosneck.
    only hard bit was the weird...
  12. Thread: New Shaper

    by HavinaGo
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    Now I acknowledge you have moved on from this...

    Now I acknowledge you have moved on from this comment but I smiled as the reason everything in my shed is Brunswick Green stems from the purchase of a 4 litre tin of oil based enamel paint for the...
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    Agree the table is a work of art. I did smile at...

    Agree the table is a work of art. I did smile at the suggestion it would be scraped flat. Seems a shame to weld on it but much easier on the back than the trestle outside that serves some of the...
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    Model Solar Car by Son

    A proud Dad is sharing a photo of a model solar powered car my son (12yrs) designed and built.
    It was raced over the weekend at the Victorian Model Solar Vehicle Challenge at Scienceworks.
    No...
  15. Thread: Metrology

    by HavinaGo
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    Roger, apologies from me for this Thursday.......

    Roger,

    apologies from me for this Thursday.... got volunteered to help mind a young'un.
    Thanks to your son and your good self for making it happen.
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    Hi pipeclay, A Duke and .RC. I confess to not...

    Hi pipeclay, A Duke and .RC.

    I confess to not checking the tip, so it is an option .. or maybe case hardening as A Duke suggested. Having made a small form cutting tool from drill rod earlier in...
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    tool steel is no match for carbon steel

    Drilling a 1/4" hole yesterday in a piece of offcut steel. Set up in the x3 mill at desired angle, little thought about speed....... 2000 rpm should do it.

    Drilling went well for 9/10ths of the...
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    :) it is good to start this day with a spark.

    :) it is good to start this day with a spark.
  19. Thread: Metrology

    by HavinaGo
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    yes please. The Thursday sounds good.

    yes please. The Thursday sounds good.
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    I learnt not having a copy of the machinery's...

    I learnt not having a copy of the machinery's handbook leads to a patient wait for enlightenment on tricky technical questions such as these .......

    I patiently await some kind soul putting me out...
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    ouch. Can relate to that sensation.... the old...

    ouch.
    Can relate to that sensation.... the old farm welder has had a handpiece upgrade as there used to be a screw that would come loose just enough to touch my wrist. Holding the grounded job with...
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    Thank you Ken, The picture makes it clear...

    Thank you Ken,

    The picture makes it clear although I again confess to having a different mental image than reality. When there was mention of a 3 phase motor and other bits, I was expecting to...
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    Took me a while to "get it" but the more I can...

    Took me a while to "get it" but the more I can visualise the extension to the ram, the more I like the simplicity and effectiveness.

    However I am still stumped! :- What is a "RPC"?? :-

    All my...
  24. Used to use them in my Camera. The only good...

    Used to use them in my Camera.
    The only good ones were obtained from an old fashioned jeweller.
    As you found real Sr44s last years.
    But they cost.
  25. Replies
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    Makes me wince. Sorry to see it has happened....

    Makes me wince.

    Sorry to see it has happened.

    Is "Brick and paving cleaner", hydrochloric acid?
    Would an alkali or buffer neutralise it. Ie sodium bicarb? Lots.
    Chemistry was not one of my...
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    Bruce, all I can think of is "Ouch" -- all the...

    Bruce,

    all I can think of is "Ouch" -- all the best on mending.
  27. Replies
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    A Light

    Finally finished a light for the lathe.
    Based on a LED down-light - slight modification to improve contact area with housing.
    260451

    Casing is an old spray can mounted on a microphone gooseneck....
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    Bearings don't like no oil

    What I learnt: Deep groove ball bearing races left without oil turn into a heap of rust surprisingly rapidly!

    In a parallel project to the above effort I am repairing a portable petrol engine...
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    bearings don't like press fit

    I've been repairing the head of the old wipper-snipper. The bush bearings supporting the cutter head shaft had won out. I thought a couple of small deep groove bearings would be a better solution so...
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    An old hardwood shovel handle (the long post hole...

    An old hardwood shovel handle (the long post hole sort not the short ones with D tops) once cut and shaped made a good hammer handle for me. I could choose the length and went longer rather than...
  31. Did exactly that last night -- Thermostat on the...

    Did exactly that last night -- Thermostat on the old bus went AWOL - fortunately stuck open! -- so at 10pm last night I was putting in a replacement -- gasket made from proper paper but cut out the...
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    Nice looking machine. In short, just like Dad's...

    Nice looking machine.
    In short, just like Dad's South Bend that I learnt on. One of the great things about the flat belt is that it can be easily moved between ratios. It ca also be left a little...
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    Amazing! I continue to be amazed by the things...

    Amazing!
    I continue to be amazed by the things people build! Anything seems to have become possible!
    All the best withe the lathe.
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    One thing I found was the last time I bought some...

    One thing I found was the last time I bought some the local welding supply place sold me the non-cadmium bearing 45% silver brazing alloy. It is OK but a slightly higher melting point and not as...
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    Pleased to hear things fixed Must say the...

    Pleased to hear things fixed

    Must say the splash is something I'd fall for based on past history -

    I've done it with cars
    I was used to push rod engines, then worked on a new-fangled overhead...
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    Thank you, That is one I had not seen and is...

    Thank you,
    That is one I had not seen and is relevant.
    :2tsup:
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    Must say I agree on the effectiveness of the saws...

    Must say I agree on the effectiveness of the saws - mine is further along the evolution chain in term of Asian manufacturer - mechanically less refined but the motor is well behaved compared to the...
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    I have just been surprised by the bouncing...

    I have just been surprised by the bouncing inferno.
    (possibly appropriate - but I'm not saying)

    Thank you

    regards David
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    table of spindle speed

    I measured the spindle speeds on my 9" Model A and made a table that I stuck to the belt cover as an easy reference.

    Of course the original is AWOL so I hope a photo of the printed table will...
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    :whs: When threading in particular.

    :whs:

    When threading in particular.
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    warning - side track How easily I can jump to a...

    warning - side track
    How easily I can jump to a wrong conclusion.
    I read the title of this thread and given it followed a thread on thread cutting in the lathe, I immediately thought -

    "Wow, a...
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    Hi Vernon, Adding the config files would make...

    Hi Vernon,

    Adding the config files would make my life much easier :) and is fine by me.

    I would add the caveat that the collection of extra gears I have is not a standard set but so far, does...
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    Thanks again Vernon Attached is a zip file...

    Thanks again Vernon

    Attached is a zip file with 2 "Lathe" config files I use to represent my Hercus.
    One for Imperial, one for metric

    216954

    given the default install, unzip the archive and...
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    If I have recognised the machine correctly as an...

    If I have recognised the machine correctly as an AR (i.e. imperial), I think Peter meant to type

    20 tooth gear on the stud (the one that drives the idler gear)
    40 and 56 on Gearbox input -- the...
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    Condensation can be a pain. I can only echo...

    Condensation can be a pain.

    I can only echo Simon's and others comments about water proofing the concrete slab. Mine has black plastic under it.

    I have a friend whose ancient cottage did not...
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    Keep head clear of carby

    In my early days visiting the wife's family, I was helping get the old Ford F100 (?) truck going again. Sorted the plugs, points and timing but it still ran rough. Off with the air cleaner. ...
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    Thanks Bob, I like the idea of less stress! I...

    Thanks Bob,
    I like the idea of less stress!
    I am starting to see why some people have detachable handles to turn the spindle, although I remain concerned about the consequences of turning on a...
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    Thanks Bruce, I sense a really large heap of...

    Thanks Bruce,

    I sense a really large heap of practice has got you there. Something for me to aspire to!
    At this stage I can count the number of such threads I have cut so I am still in the...
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    :2tsup: Very neat. Simple but effective...

    :2tsup: Very neat.
    Simple but effective modification that I might just follow.

    How did you screw cut without a run out groove at the end of the thread?

    Thank you for sharing.
    cheers
    David
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    Thanks Vernon, Have set up one config file for...

    Thanks Vernon,

    Have set up one config file for cutting metric threads with
    G12=*C100
    G13=*B127

    and another for cutting imperial threads
    G12=*BC80

    I choose the correct "lathe" for the...
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