Hot lathe chips

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Hot lathe chips

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  • #359427
    Ross Lloyd 1
    Participant
      @rosslloyd1

      Hello

      Is it normal for the chips to be hot enough to leave little burn pimples on your skin where they bounce off your arms / hands? The chips aren't blue, they are nice and silver. Is being prickled just part of the fun of turning?

      Cheers

      Ross

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      #9234
      Ross Lloyd 1
      Participant
        @rosslloyd1
        #359430
        JasonB
        Moderator
          @jasonb

          Quite normal.

          #359431
          Mick B1
          Participant
            @mickb1

            As Jason says, it's normal if you're taking big cuts at high speed.

            If you don't like it, as I don't, reduce speed/take lighter cuts/use coolant.

            Sometimes it can be fun to brave a hail of chips running a 200 thou cut at 300 ft./min. with full-flow coolant, and the chips still coming off smoking-hot, but as I get older I think more and more that's for adrenaline junkies… smile o

            Edited By Mick B1 on 25/06/2018 16:27:08

            #359432
            Anonymous
              Posted by Ross Lloyd 1 on 25/06/2018 15:57:38:

              Is it normal for the chips to be hot enough to leave little burn pimples on your skin where they bounce off your arms / hands? The chips aren't blue

              That's nothing, wait until one goes down your shirt front. Then the air will turn blue, never mind the chip. If you're running hard then the chips should be blue or purple.

              It's also why you should be wearing googles, or as a minimum safety glasses, when turning. Get a hot chip in your eye and it's game over.

              Andrew

              #359433
              David Standing 1
              Participant
                @davidstanding1
                Posted by Andrew Johnston on 25/06/2018 16:30:14:

                Posted by Ross Lloyd 1 on 25/06/2018 15:57:38:

                Is it normal for the chips to be hot enough to leave little burn pimples on your skin where they bounce off your arms / hands? The chips aren't blue

                That's nothing, wait until one goes down your shirt front. Then the air will turn blue, never mind the chip. If you're running hard then the chips should be blue or purple.

                It's also why you should be wearing googles, or as a minimum safety glasses, when turning. Get a hot chip in your eye and it's game over.

                Andrew

                Other search engines are available cheeky

                But excusing the frivolity, as you say eye protection is a must. Brass particles in particular can ping everywhere.

                #359434
                Anonymous
                  Posted by David Standing 1 on 25/06/2018 16:46:36:

                  Other search engines are available cheeky

                  That's quackers!

                  Andrew

                  #359438
                  Ross Lloyd 1
                  Participant
                    @rosslloyd1

                    haha cheers chaps, knew I could rely on you laugh The most I have braved with my lathe is a 3mm depth of cut in mild steel at around 600rpm for a 40mm piece of stock. Didnt go blue which was a good sign!

                    And yep always have the safety specs on, I feel naked without them.

                    #359442
                    John Reese
                    Participant
                      @johnreese12848

                      If the chips are coming off blue they are around 570F or 300C. That is hot enough to cause nasty burns and can even embed themselves in plastic shields.

                      #359444
                      Mike Poole
                      Participant
                        @mikepoole82104

                        A magnetic base or eclipse type pot magnet can have a deflector of aluminium, Perspex or polycarbonate positioned to keep the hot chips off your arms or hands. I would strongly resist any temptation to wear gloves on any machine tool.

                        Mike

                        #359446
                        Brian G
                        Participant
                          @briang
                          Posted by David Standing 1 on 25/06/2018 16:46:36:

                          But excusing the frivolity, as you say eye protection is a must. Brass particles in particular can ping everywhere.

                          And of course the doctor cannot pick brass out of your eye with a magnet. When I had an MRI I was told that non-ferrous swarf is as much of a no-no as ferrous which surprised me.

                          Brian

                          #359452
                          John Rudd
                          Participant
                            @johnrudd16576

                            I've had turnings land on my scalp….not pleasant…

                            Ergo, wear some form of head protection…

                            #359453
                            vintagengineer
                            Participant
                              @vintagengineer

                              When wearing just overalls and one goes down the front you find out how hot they are!

                              #359456
                              Samsaranda
                              Participant
                                @samsaranda

                                Back in the early sixties I was working underneath an aircraft floor in the freight bay, it was a big transport aircraft, and I felt something fall into my eye, no wasn’t wearing safety goggles it was pre health and safety days and before my eyes became too knackered to manage without specs, anyway my eye was really sore and it didn’t get any better, in fact everyday it seemed to get more sore. This went on for a couple of weeks and I decided that I would have to see the doc, he pronounced that he could see rust forming on my eyeball and promptly despatched me to hospital. There the eye specialist found a long steel splinter had embedded itself end on in my eye, he used local anaesthetic, a tiny scalpel and a magnet and managed to remove the splinter. I was lucky, I learnt from that how valuable but vulnerable our eyes are, be careful when turning, milling or drilling we only get one pair of eyes.

                                Dave W

                                #359463
                                Mick B1
                                Participant
                                  @mickb1

                                  …and I think all this says keep speeds, feeds and depth of cut sensible. We're model engineers and we're not on piecework rates. We don't have to stand grinning into a storm of projectiles… laugh

                                  #359466
                                  Joseph Noci 1
                                  Participant
                                    @josephnoci1

                                    So much Talk about Chips – Grab a Pint and watch some Porn…

                                    **LINK**

                                    Joe

                                    #359472
                                    Hopper
                                    Participant
                                      @hopper

                                      Gets real interesting in the tropics where thongs (flip-flops) are standard safety footwear. Red hot swarf landing on sensitive feet is not that much fun. But its the bits that get between your toes and stick there so they don't dislodge when you shake your foot that really hurt. All this standing one one foot shaking the other mostly seems to happen when taking that critical final cut under careful hand feed of course.

                                      #359484
                                      not done it yet
                                      Participant
                                        @notdoneityet

                                        “Little burn pimples”. Depends on how tough your skin might besmiley.

                                        Some will be more sensitive than others. Most hot chips, as described by the OP, would need to settle on my hands or arms to leave a record. Yes, I do feel them as they bounce off and I do pull my shirt neck tight, to prevent them getting inside! I also wear gloves if hand feeding the long travel, as the hand wheel is directly below the chip fall. I don’t think think a nitrile glove is a danger – I would not wear gloves which can get caught in the moving machinery.

                                        I have a few scars from scrapes and cuts,over the years, but still have all my digits attached – and functioning reasonably – after seven decades of use.

                                        #359500
                                        Ian S C
                                        Participant
                                          @iansc

                                          Safty glasses, a hat, and do up the top button of shirt/overalls. No gloves, my lathe has a metal guard on the left side of the saddle, and the feed wheel is on the right on my lathe.

                                          Ian S C

                                          #359505
                                          not done it yet
                                          Participant
                                            @notdoneityet

                                            Unfortunately, on my lathe, a very much appreciated improvement in apron function was achieved when the previous model was ‘up-graded’ to my version.

                                            A vast improvement, except that the hand wheel was relocated to the other end of the apron. But as compromises are usually/often required, the inconvenience of that handle position was far out-weighed by the other improved attributes.

                                            #359558
                                            mark costello 1
                                            Participant
                                              @markcostello1

                                              If One gets up Your nose You get the smell along with the pain. On Your lip seems to be the pain apex.

                                              #359566
                                              clogs
                                              Participant
                                                @clogs

                                                watched the video thanks, Joe Noci……

                                                did you see the guy in the coil spring part of the video "in a Jumper"………..

                                                wish I could get 1/2 the finish on metal as those guy's……..

                                                the video was almost as good as sex, must be getting old……hahaha….can u say that ??????

                                                SORRY…….

                                                ..

                                                #359574
                                                vintagengineer
                                                Participant
                                                  @vintagengineer

                                                  Wait to you get one on your todger!

                                                  Posted by mark costello 1 on 26/06/2018 17:40:08:

                                                  If One gets up Your nose You get the smell along with the pain. On Your lip seems to be the pain apex.

                                                  #359575
                                                  colin brannigan
                                                  Participant
                                                    @colinbrannigan54160

                                                    A hottie in the ear is amusing, the smell of burning hair and jumping about trying to get it out, had many down the front of the overall and on the tongue.

                                                    #359578
                                                    Jon
                                                    Participant
                                                      @jon

                                                      The only time i will wear glasses is when wearing a hard hat with flip down visor.
                                                      Coupled with long sleeve coat zipped up to neck – need protection.

                                                      Happened a few times learnt my lesson wearing safety glasses for slightly tougher work/interupted cuts. Chips lodge between glases and shin, tantrum and chips drop down on bottom eye lid scared for life.

                                                      Apart from the free machining aluminiums all other stuff will come off stringy, no point in using guards or perspex on magnetic bases they wont last 1 minute no joke.

                                                      Could do a short video tomorrow for the reasons why, failing that a couple of action shot piccies.

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