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  1. Cut

    If you are boring to a specific size , if you move the tool position inwards after each forward cut and then reverse the carriage you will have to find the original tool position again on the cross...
  2. Finish

    Hi

    I think you would achieve a better finish if you use a tool with a small radius on the point , your tool appears to have a sharp point on it which isn't the recommended shape for a decent...
  3. e-go

    I used e-go based in Dandenong South. They will do door to door . https://www.e-go.com.au/home.do;jsessionid=5EDB2E4AA75D0ED0D21E94404877989C

    You might have to ask them if they have hiab trucks. ...
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    Book lights

    You can pick up bedtime book reading lights with the flexible bendy stalk . I get them from op shops for 2 or 3 bucks. They have a spring clamp that will clamp onto any suitable location. Been...
  5. Dro

    https://www.touchdro.com/resources/info/intro-to-touchdro.html
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    yes

    Yes, the Rats of Tobruk movie or something like that.

    Don't think the Rover LAC was built by Rover in Melbourne .
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    Film

    https://www.awm.gov.au/collection/F07029

    The Dingo scout car appears in the film https://www.awm.gov.au/collection/REL23826

    And, the Rover...
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    Australia makes a tank

    https://forums.g503.com/viewtopic.php?f=108&t=324049
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    Trabant factory

    https://www.youtube.com/watch?v=tGpqUaChToA

    The guy checking the cylinder bores for size looks like Benny Hill
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    How to blacken steel

    https://makeitfrommetal.com/how-to-blacken-steel-with-beeswax-at-home/

    More stuff
    https://makeitfrommetal.com/category/hobbyist-guides/
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    Camel back dilemma

    I have a old camel back drill, think it's a American Barnes but not sure, It has the four selectable power feeds which is nice. . The base casting for the C/pulley mount is broken , the break about...
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    Sticky: Bolts

    I managed to finish the leaf spring pivot bolts for my jeep . They are 1 thou undersize, I will lose my first class machinist rating if I don't improve my accuracy/sizing of components :?
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    Felt

    In theory Felt will absorb some oil and lubricate the ways but felt will also hold fine particles of swarth which we don't want.
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    Sticky: Thanks

    A4G0505M05U04GMN is a grooving insert

    https://www.ebay.com/itm/Kennametal-A4G0505M05U04GMN-KC5025-Carbide-Groove-Insert-Germany-/143897967197

    More info
    ...
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    Sticky: Nice

    "I have a project to bend more pipe with larger bending radius and the first cutter I made is not side enough for the die (180mm) to I made a new one"

    Great method you came up with . I am looking...
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    Purcell Engineering history

    Anyone with a Purcell Visby lathe ? Some history
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    more

    This is a good article I think

    http://neme-s.org/2005%20May%20Meeting/drills.pdf
  18. more

    Another paper: This one is easier to read with minimal math
    ...
  19. Alternative grinding and holding method of HSS tooling for the lathe

    https://www.tripodhead.com/products/Instructions-TH-500.pdf

    And, another more orthodox write up on HSS grinding
    ...
  20. more

    This guy explains HSS free hand grinding well I think

    https://www.youtube.com/watch?v=AkTFjECcBKw

    https://www.youtube.com/watch?v=ho6TtBQbpjU
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    more

    Have a few hours to spare ?

    http://unsworks.unsw.edu.au/fapi/datastream/unsworks:1578/SOURCE02?view=true
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    How to

    run a lathe
  23. Thread: 1954 Advert

    by morrisman
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    Parkinson

    The less common copy of the SB 9 lathe that was made in Australia. Hmmm should be spelt Parkanson https://trove.nla.gov.au/newspaper/article/93218118?searchTerm=%22%20parkanson%20lathe%22
  24. Thread: 1954 Advert

    by morrisman
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    1954 Advert

    And 1952 and one from 1950
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    Hercus wartime history

    Newspaper during WW2. Didn't know Hercus made T&C grinders

    https://trove.nla.gov.au/newspaper/article/131967166?searchTerm=%22%20tool%20and%20cutter%22
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    Sticky: N.f.

    From the parts book: WW2 era. The - 2 designation is the class of the thread I think ?
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    more

    This guy at least does some basic comparing of the various brands . He has done many of these videos covering different tools

    https://www.youtube.com/watch?v=v6QCrV4ZOiU
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    Make your own cutting oil

    Interesting home brew

    https://www.youtube.com/watch?v=wdgGy1lTyQk

    https://www.youtube.com/watch?v=2qigHaJkriA&t=20s

    https://www.youtube.com/watch?v=Ex0JeBz4ULM
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    Sticky: Bolts

    Not much of a project. New leaf spring bolts for my Jeep , material is 4140 alloy and I use HSS tools. Good surface finish even with the roughing tool at 290 rpm , very slow feed and some tap magic...
  30. more

    Hi

    You will soon pick up the tips of the trade :U

    This is a good intro to grinding your tools https://www.youtube.com/watch?v=2OzRtY8SVcM&t=1193s
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    Thanks

    Hi BC

    Yes, that web thinning you described and pictured is what I do as a normal part of the sharpening process.
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    more

    This has just been published ...
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    Split point drill grinding

    What are your favoured methods to grind the tips of the grind split point twist drills ? I've seen where some use a dremel and a small wheel.
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    more

    The chrome is only on the surface , I would do a deep enough cut to get underneath it .
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    Chaser

    I think you need a chaser ? These are different to normal cutting taps. You could make a chaser using a BSW bolt of the correct size

    "Taps and dies are designed for creating new threads. If you...
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    yes

    If it was me doing that job on that lathe I would engage the back gear , use a sharp HSS tool with the appropriate angles , slow down the rpm and use the slowest power feed option and lots of coolant...
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    Thanks

    OK. I found this info useful as a general guide http://www.atlassteels.com.au/documents/Atlas%20Engineering%20Bar%20Handbook%20rev%20Jan%202005-Oct%202011.pdf
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    4140 confusion

    I bought A Short length of 4140 which I think is what they call " pre-hard" the seller says it's hardness is RK 32 or therabouts, the surface finish is very smooth and shiny .

    There are various...
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    Differences

    I have one somewhere but it's larger than 1/2" . Found this is helpful https://www.threadtools.com/uploads/pdf/technical-specs/coventry-dieheads-general.pdf

    The manual is online for download
    ...
  40. Thread: Kerry Lathe

    by morrisman
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    Aspendale Tech 1966

    Tech. school in Victoria ..I spy a Kerry lathe , 1966
  41. W. Thornley & Sons Ltd., Sydenham Ironworks, St. Peters, Sydney, N.S.W

    https://nla.gov.au/nla.obj-465317995/view?partId=nla.obj-465337182#page/n0/mode/1up
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    Bren Carrier manual

    https://trove.nla.gov.au/work/18596094?keyword=%22%20machining%22&l-rights=Free&startPos=20
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    Hmmm

    Ah bugger, I have found a few more academic papers . Here is one:
    https://research-repository.uwa.edu.au/en/publications/analytical-modelling-and-experimental-verification-of-facing-and-

    And, I...
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    Lathe tool book

    Free download

    https://babel.hathitrust.org/cgi/pt?id=mdp.39015002877739&view=1up&seq=12
  45. Thread: Kerry Lathe

    by morrisman
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    Kerry Lathe

    Spotted this of Gumtree, This example seems to have a threaded spindle nose ? I thought these Kerry lathes all have a L00 spindle mount but reading the Lathes UK write up, the threaded nose was used...
  46. Cab

    It has the GMH made cab and army divided rims - looks like 900-18 tyres . GMH and Ford Aust
    had a large press to make those 18" rims during the war.
    18" was a oddball size that no other countries...
  47. Penetrol

    Have used Penetrol on a rusty iron roof with good result. It will eventually break down if left exposed to the sunlight. It's ideal for crevices where it soaks into places you can't paint. If the...
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    yes

    https://nla.gov.au/nla.obj-550647091/view?sectionId=nla.obj-552819510&partId=nla.obj-550672309#page/n35/mode/1up
    ...
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    more

    This guy is very good

    https://www.youtube.com/channel/UCCdehjn-R9mM8CdgqO7WZLA/videos
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    Basic manual

    https://www.liberatedmanuals.com/TM-9-3418-200-14-and-P.pdf

    https://www.liberatedmanuals.com/TM-9-3418-201-14-and-P.pdf

    There is a Shaper USB stick somewhere that was being shared by the forum...
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