Parting Off

Parting Off

Home Forums Manual machine tools Parting Off

Viewing 23 posts - 1 through 23 (of 23 total)
  • Author
    Posts
  • #426387
    Ger
    Participant
      @ger91912

       

      I make boiled and steam engine fittings, small nuts, and parts.

       

      Edited By Ger on 28/08/2019 17:53:14

      #13622
      Ger
      Participant
        @ger91912

        Parting off tools and examples for Cowells and Maximat 7 lathes

        #426398
        Howard Lewis
        Participant
          @howardlewis46836

          Duplicated Thread ?

          Howard

          #426419
          mechman48
          Participant
            @mechman48

            Boiled engine fittings…surprise devil ? What gas mark ?

            George.

            #426512
            Ger
            Participant
              @ger91912

              Hello George,

              You posted a reply to my video post, "Boiled engine fittings…? What gas mark?"

              I have no idea "What gas mark?" means.

              I make boiler fittings. My post had a spelling error. I would think that was obvious to all. Appears not to you.

              I had some difficulty with my post. I made duplicate postings and had the spelling error. I tried to correct both but could not.

              I had hoped readers would be interested in my video than my mistakes. Apparently you were only interested in criticizing me.

              The Model Engineer forum is not for me. You can't correct mistakes and it appears you can't quit the forum either. Not really a friendly place.

              And then you have to put up with a smart-ass!

              Ger

              #426515
              Michael Gilligan
              Participant
                @michaelgilligan61133

                It's good to see the little Cowells doing some reasonably hard work.

                Thanks for posting the video, Ger yes

                Welcome to the forum, and please do stay.

                MichaelG.

                #426517
                Brian H
                Participant
                  @brianh50089

                  Welcome to the forum Ger and please don't be put off by some peoples attempt at humour.

                  I don't have a Cowells but have been meaning to try the rear toolpost on my Boxford. Your video convinces me that would be a good move.

                  Brian

                  #426532
                  Martin Hamilton 1
                  Participant
                    @martinhamilton1

                    The rear mounted tool post works very well indeed, i use a rear mounted inverted parting tool on my Sherline & it parts with no problems at all even on steel. Aluminium & brass is a joy to part off, you don't tend to get dig in's with an inverted parting tool whether it be a rear or a front mounted tool. Being inverted the rotation of the work piece is pushing the tool away from the work piece preventing dig in's, a more normal position parting tool is pulled into the work piece causing more severe dig in's.

                    #426537
                    Nick Clarke 3
                    Participant
                      @nickclarke3
                      Posted by Martin Hamilton 1 on 29/08/2019 18:35:14:

                      The rear mounted tool post works very well indeed, i use a rear mounted inverted parting tool on my Sherline & it parts with no problems at all even on steel. Aluminium & brass is a joy to part off, you don't tend to get dig in's with an inverted parting tool whether it be a rear or a front mounted tool. Being inverted the rotation of the work piece is pushing the tool away from the work piece preventing dig in's, a more normal position parting tool is pulled into the work piece causing more severe dig in's.

                      Geometrically the front and rear parting tools are pushed in the same relative direction compared to the rotation of the workpiece.

                      What prevents the dig in is the 'spring' when a rear parting tool is pushed away from the lathe bed as against the 'jamming' of the tool between the work and the rigid lathe bed.

                      Another advantage of the upside down rear lathe tool is that chips fall away from the cutting edge of the tool.

                      Edited By Nick Clarke 3 on 29/08/2019 19:19:11

                      #426543
                      Martin Hamilton 1
                      Participant
                        @martinhamilton1

                        http;//youtu.be/-RZRq0olsxM this explains things clearer.

                        #426559
                        Nick Clarke 3
                        Participant
                          @nickclarke3

                          Thanks for that link Martin – it clearly shows how a tool in a rear tool post or upside down in the normal one 'springs' away from work as against 'jamming' when set up in the normal way better than just using the words as I did. A picture says a thousand words and a youtube video can often be even clearer!!

                          It is a shame that the computer simulation shows a tool so far above the centre though, as that makes the problem bigger than in real life.

                          #426567
                          Douglas Johnston
                          Participant
                            @douglasjohnston98463
                            Posted by mechman48 on 28/08/2019 20:30:47:

                            Boiled engine fittings…surprise devil ? What gas mark ?

                            George.

                            Oh, come on, has everybody lost their sense of humour, I for one thought it was funny but perhaps that says more about me!

                            Doug

                            #426568
                            Jon Lawes
                            Participant
                              @jonlawes51698

                              I think the "smart-ass" comment was intended in a friendly manner. It was a very tame and light hearted bit of welcoming chat by the person who posted it. Whilst I agree a forum should be welcoming and not overly critical I think it is possible to have a slightly too thin skin, or we would only want to converse with sycophantic robots.

                              You are very welcome, and I am interested in your posts. Teething troubles with posting on forums are to be expected especially as there are so many different types of forum out there!

                              #426585
                              ega
                              Participant
                                @ega
                                Posted by Douglas Johnston on 30/08/2019 09:27:04:

                                Posted by mechman48 on 28/08/2019 20:30:47:

                                Boiled engine fittings…surprise devil ? What gas mark ?

                                George.

                                Oh, come on, has everybody lost their sense of humour, I for one thought it was funny but perhaps that says more about me!

                                Doug

                                When I read the OP from a relative newcomer I was tempted to ask "boiled or steamed?" but refrained for fear of causing offence. He seems, from the commentary on his video – nice lathes! – to be from the US, and is a welcome visitor.

                                As always, communication would be easier and friendlier if there were a profile to refer to.

                                #426613
                                ega
                                Participant
                                  @ega
                                  Posted by Nick Clarke 3 on 30/08/2019 08:32:09:

                                  Thanks for that link Martin – it clearly shows how a tool in a rear tool post or upside down in the normal one 'springs' away from work as against 'jamming' when set up in the normal way better than just using the words as I did. A picture says a thousand words and a youtube video can often be even clearer!!

                                  It is a shame that the computer simulation shows a tool so far above the centre though, as that makes the problem bigger than in real life.

                                  You clearly got the link to work but I'm blessed if I can! Would you mind posting the appropriate search string?

                                  #426628
                                  Nick Clarke 3
                                  Participant
                                    @nickclarke3
                                    #426629
                                    Michael Gilligan
                                    Participant
                                      @michaelgilligan61133
                                      Posted by ega on 30/08/2019 15:05:00:
                                      .
                                      You clearly got the link to work but I'm blessed if I can! Would you mind posting the appropriate search string?

                                      .

                                      Allow me, ega

                                      http;//youtu.be/-RZRq0olsxM

                                      contains a semicolon where there should be a colon … Thus:

                                      **LINK**

                                      MichaelG.

                                      .

                                      Edit: But Nick has now managed to conceal the original sin !!

                                      Edited By Michael Gilligan on 30/08/2019 18:05:38

                                      #426631
                                      Nick Clarke 3
                                      Participant
                                        @nickclarke3

                                        Michael – I only realised there was a typo in the original post after posting the link again, but what puzzles me is that I only knew it was wrong when ega pointed it out as even with the typo it worked OK in Edge on Win10, I have just tried Chrome and IE on the same m/c and Safari on the Mac and on all of them it corrects the mistake and loads the page fine, as it does in Android on my phone.

                                        I have not got a Firefox, Chromium Pi or Linux machine up here but I am intrigued so I will check them when I go downstairs, just for my own satisfaction. As the saying goes – To err is human, but to really screw it up just get a computer!! smiley

                                        Take care,

                                        Nick.

                                        #426634
                                        Nick Clarke 3
                                        Participant
                                          @nickclarke3

                                          Well tried it on the other systems and on every combination of OS and browser it automatically corrects http;// to http://

                                          Just all part of life's rich pageant (As Inspector Clouseau remarked on getting out of the pond again frown)

                                          #426636
                                          Michael Gilligan
                                          Participant
                                            @michaelgilligan61133

                                            That's interesting, Nick

                                            I've just copied and pasted your original version < http;//youtu.be/-RZRq0olsxM > into a new tab in Safari, on the iPad; and it spots < http; > and displays the message:

                                            Safari cannot open the page because the server cannot be found.

                                            Predictably, however … if I just paste < youtu.be/-RZRq0olsxM > it 'knows' what is missing, and opens the video.

                                            dont know

                                            MichaelG.

                                            #426640
                                            Nick Clarke 3
                                            Participant
                                              @nickclarke3

                                              Michael –

                                              Sussed it out I think. I copied the original link in Martin's Post and inserted it as a link in a new post. When inserting the link I used the original link with typo as the descriptive text – but when adding a link in this forum you only need to put the part after the http:// as URL as it preceeds it with http:// automatically when you fill in the form to add a link. It seems to assume the protocol always ends with :// So Martin's link on the post, with a typo was just text on the screen. The URL it pointed to was correct.

                                              So if you click on the link it will take you to the right place. If you copy and paste in anything but Safari on an iPad it will also do so, but not there. Even more interestingly if you have google installed on the iPad it will open a search result – but the first video it suggests is the one wanted.

                                              Even curiouser I think.

                                              Take care,

                                              Nick

                                              Edited By Nick Clarke 3 on 30/08/2019 19:37:00

                                              #426649
                                              Michael Gilligan
                                              Participant
                                                @michaelgilligan61133

                                                Well sussed, Nick yes

                                                A useful spin-off from all this is that I have learned that Phun [mentioned in the video] has developed into Algodoo: **LINK**

                                                http://www.algodoo.com/

                                                MichaelG.

                                                #426652
                                                ega
                                                Participant
                                                  @ega
                                                  Posted by Michael Gilligan on 30/08/2019 18:04:05:

                                                  Posted by ega on 30/08/2019 15:05:00:
                                                  .
                                                  You clearly got the link to work but I'm blessed if I can! Would you mind posting the appropriate search string?

                                                  .

                                                  Allow me, ega

                                                  http;//youtu.be/-RZRq0olsxM

                                                  contains a semicolon where there should be a colon … Thus:

                                                  **LINK**

                                                  MichaelG.

                                                  .

                                                  Edit: But Nick has now managed to conceal the original sin !!

                                                  Edited By Michael Gilligan on 30/08/2019 18:05:38

                                                  Many thanks. I can now see the video and will watch it later.

                                                  In the meantime, where I went wrong it seems is that having spotted the redundant period between "youtu" and "be" I tried to search just on the tail of the URL. However, I now find that Firefox and Duck Duck Go between them find the video despite the typos.

                                                Viewing 23 posts - 1 through 23 (of 23 total)
                                                • Please log in to reply to this topic. Registering is free and easy using the links on the menu at the top of this page.

                                                Latest Replies

                                                Home Forums Manual machine tools Topics

                                                Viewing 25 topics - 1 through 25 (of 25 total)
                                                Viewing 25 topics - 1 through 25 (of 25 total)

                                                View full reply list.