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Type: Posts; User: OldRustyToolie

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  1. Replies
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    Nsw. Only 25 minutes from John Electrosteam. ...

    Nsw. Only 25 minutes from John Electrosteam.

    D
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    I have plenty of m5 Rivnuts (Nutserts) and the...

    I have plenty of m5 Rivnuts (Nutserts) and the tool here if you need them John.

    DH
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    For those who know the Hawkesbury area, here is a...

    For those who know the Hawkesbury area, here is a photo looking over McGrath's Hill towards Windsor during the 1961 flood. Photo from Vic Gillespie's collection.

    That one was quite a bit larger...
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    North Richmond river height is still at 13.3...

    North Richmond river height is still at 13.3 metres at 15.30 today Tuesday.

    Both supermarkets stripped bare by panic buyers once again.
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    Steve, the seller is amazingitem. The location...

    Steve, the seller is amazingitem. The location was Regents Park but based in Hong Kong. I ordered on 23 Dec and it was at the door on 28 Dec so must be in a warehouse in Sydney when you take into...
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    Anyone looking for the 6" rotary table dividing...

    Anyone looking for the 6" rotary table dividing plates and crank fleabay had them for $65 posted from Sydney. Quality quite good and turned up within 1 week of ordering on 26 dec. Worth a look for...
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    Have you got a 63 hole plate John? If not give...

    Have you got a 63 hole plate John? If not give me a call. I can possibly fix you up with a plate for the Vertex rotary table/BS0 div head.

    Otherwise, you can borrow my dividing head which has a...
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    Would be great to catch up John. Miss the...

    Would be great to catch up John. Miss the monthly lunches. St Marys still no chew n spew. What about Penrith RSL. Still closed?

    D
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    I just posted to remind John that we can check it...

    I just posted to remind John that we can check it here for him. We are only 25 minutes apart so no probs checking, we just have to make a time. He must have forgotten about the comparator in my...
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    If you know someone with a Optical Comparator you...

    If you know someone with a Optical Comparator you could most likely come up with the pitch without straining the eyes or best guessing too much.

    D
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    Standard UNF thread which should be available at...

    Standard UNF thread which should be available at any good tool supply store.
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    Maybe just overstepping the cutting speed at your...

    Maybe just overstepping the cutting speed at your stated rpm. HSS tools on cast iron is around 22 m/min so the holesaw that dia should run at around 50 rpm.
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    Classical Metric v belts are measured on the...

    Classical Metric v belts are measured on the pitch circumference. Imperial v belts are measured on the inside circumference.
  14. 7/16" x 28 tpi is stock standard UNEF thread ...

    7/16" x 28 tpi is stock standard UNEF thread

    https://www.m.gewinde-normen.de/en/unified-extra-fine-thread.html
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    Azzrock, Yes, many of these could have retired...

    Azzrock, Yes, many of these could have retired when you were there in the 1980s. Were you MTP or MTH in those days? What a great training establishment it was.
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    I added a few more from around that era Crowie!

    I added a few more from around that era Crowie!
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    Azzrock, do any of these names ring a bell from...

    Azzrock, do any of these names ring a bell from your Navy days at Nirimba?

    Ron Payne, Roy Forsythe, Stan Glass, Fred Hadley, Ron Sell, Col Smith, Brian Barlow, "Jan"Leach (Marking room), Ernie...
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    Nice to chat John. Will be nice to get back to...

    Nice to chat John. Will be nice to get back to our lunches after this lock down thing!!

    Don't get too tied up with that 1/4 turn thing. A quarter turn with a spanner on a 6mm/1/4" cutter is...
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    John, I have spare 5/8, 1/2, 3/8 collets if you...

    John, I have spare 5/8, 1/2, 3/8 collets if you call over. Bring your ones over. Some of the damage to Clarkson collets is caused by spindle "accidently"???? run in reverse which winds the collet...
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    Used extensively in Railway workshops during...

    Used extensively in Railway workshops during steam days for repairing threads on brass, steel and cast iron components eg water injector component threads during refurb. Used in conjunction with a...
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    Osborn Titanic II collet chuck.

    Osborn Titanic II collet chuck.
  22. Replies
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    I guess then it's time to leave the room and do...

    I guess then it's time to leave the room and do more meaningful things.

    All have a merry Christmas and enjoy whatever the new year brings.

    Rusty over and out.
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    This is the info I go on for my calcs. I can't...

    This is the info I go on for my calcs. I can't argue with Machinerys Handbook or the Standards drawing of the Unified/Metric profile. If the 0.541P full depth of engagement is the same value as the...
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    This one seems to pop up regularly with magic...

    This one seems to pop up regularly with magic figures re engagement percentages related to OD-Pitch calculation which is the general workshop formula and works for the majority of softer metals.
    ...
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    Oh yes there is Kryn! Exactly the same formula...

    Oh yes there is Kryn! Exactly the same formula as metric is used for imperial UNC/F etc as well as BSW/F etc. For UNC you get same % depth contact as metric as it has the same thread form. ...
  26. In defence of the seller, as a consumer we...

    In defence of the seller, as a consumer we should be very familiar with cutting speeds of different metals. With this diameter and rpm the cutting speed is near 1200 m/min. We would expect the...
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    Many don't look at the other problem with the...

    Many don't look at the other problem with the tailstock for drilling problems. An old lathe where operators don't lubricate the tailstock ways thus heavy wear results in the tailstock being below...
  28. Replies
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    It is now 11 days and we aren't sure if Alf has...

    It is now 11 days and we aren't sure if Alf has got to cut that 16tpi thread. Most of us have some way of solving the problem, some through spreadsheets to find that odd gear which most haven't got...
  29. Replies
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    If you want a completely bastardised gearbox, buy...

    If you want a completely bastardised gearbox, buy an early model Nuttall lathe ex NSW TAFE. When things got metricated in the early 1970s they changed the 1/4" leadscrew for a 6mm one. There were...
  30. Replies
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    Just a thought Alf. Is there another lever...

    Just a thought Alf. Is there another lever somewhere there which indicates imperial or metric. All we have showing is the abc lever and the 123etc. The Mazak lathe which I had a bit to do with had...
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    Hi Alf. To convert imperial to metric we...

    Hi Alf. To convert imperial to metric we multiply by 25.4 which is 25.4/1. To get whole numbers multiply by 5/5 = 127/5
    If you had a 4mm leadscrew you would have to stop rotation, open half nut...
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    Use the same method on the horisontal universal...

    Use the same method on the horisontal universal mill as we do on a turret mill to set head square to table. Hold a suitable length bar on the spindle to attach a dti. Rotate spindle side to side...
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    Hi Alf. This is in your opening lines "The...

    Hi Alf. This is in your opening lines "The thread chasing dial shows 24,21,20 and 18 and the appropriate alphabetical position to engage the dial - I cant understand why I cant engage anywhere as...
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    No probs Pete. On an imperial machine just...

    No probs Pete. On an imperial machine just engage on inch marks :U Although my Dashin Prince stuffs that one up! The whole numbers actually relate to 3/4inch spacings on it.:doh:

    Bob still...
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    It doesn't matter where you engage the half nut...

    It doesn't matter where you engage the half nut TO START when cutting an imperial thread on a metric lathe or VV as it is totally impractical to think we can disengage and use the chasing dial so...
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    Could also be a Purcell copy of Southbend....

    Could also be a Purcell copy of Southbend.
    Purcell 4.5-inch South Bend Copy
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    After reading many of the threads on tapping...

    After reading many of the threads on tapping drill sizes, I wonder how many actually look at the profiles and dimensions of our basic thread forms. The ISO Metric and Unified threads have the same...
  38. Hi Martin. That thread you need is 3/8" x10tpi....

    Hi Martin. That thread you need is 3/8" x10tpi.

    Enjoy the refurb on the ML7.
  39. Replies
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    S.I.M.A. Rossi Milling machine...

    S.I.M.A. Rossi Milling machine

    maye be of use. This suggests ISO 30.
  40. Ok on that as you didn't say initially there was...

    Ok on that as you didn't say initially there was a step down from the wheel register diameter to the thread diameter.
  41. Why is the new one smaller? Generally the thread...

    Why is the new one smaller? Generally the thread diameter is about that of the bore size of the wheel for those grinders. As that is 1.25" one would think the nominal dia of the thread would be...
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    That bearing is even available on fleabay. NSK...

    That bearing is even available on fleabay. NSK brand for around $100. Any bearing supplier should have it. Are you sure the bearing in your machine is a roller or is it the angular contact as per...
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    Maybe a visit to Machinery House to take one of...

    Maybe a visit to Machinery House to take one of these home. Pull it out of the box, place on bench, plug into power point and off you go sharpening a large variety of tools. Rigid and well made...
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    Jack620 has noted here at least the 7 deg back...

    Jack620 has noted here at least the 7 deg back rake which helps with chip flow. Way back some where I noted up to 25 deg back rake for mild steel.

    Looking at most of the posts two words are...
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    Agree on all of the above which Grahame has...

    Agree on all of the above which Grahame has listed although I never like a tool above centre by any amount (for external work). I do have trade books that indicate that the tool be set "about 5 deg...
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    For general use for any hobbiest lathe work you...

    For general use for any hobbiest lathe work you can't go past a HSS blade. Far cheaper way of doing things and more user friendly on a small lathe. Have a look at the blocks which take HSS blades.
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    Message sent. Rusty

    Message sent.

    Rusty
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    Internet on and off here so I'll try send you pm....

    Internet on and off here so I'll try send you pm.

    No PM, your mailbox is full. Can you clear it a bit so you can receive messages?

    Rusty
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    COLLET CHUCK Pratt Burnerd.

    Pratt Burnerd Collet Chuck KC 15 D1-4 mount complete with 1/16" - 1" collets.

    Complete set in ready to use.

    $595
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    Tapping Chucks

    Surplus to requirements, two tapping chucks, Demco K1 10mm input shank and K3 Morse 3. Both A1 condition. Will split.

    K1 $50

    K3 $110


    Will post at cost.
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