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Just Bought a 12-Inch Lapmaster, Now I Need to Figure Out How to Use it

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  • Just Bought a 12-Inch Lapmaster, Now I Need to Figure Out How to Use it

    Hello, Everyone. I'm new around here. In fact I think this might be my first post ever on this forum.

    I recently acquired an ancient 12-inch Crane Lapmaster (pictured below). It is in perfect working order and SO overbuilt. I love old funky overbuilt things.




    You'll note that it is missing one arm. It also did not come with the conditioning rings.

    I have an application for this machine that requires lapping plastics, not metals. Since this will mostly be pretty light duty, is it possible I could try bypassing the conditioning rings and just use this as a slow RPM flat lap? This woud save me a lot of money and time.

    I'm sorry I'm such a rank amateur, but I'm a quick and passionate learner. My company makes really high-end guitar picks, selling from $30-50 each.

    May I ask some more questions?

    Thanks So Much,
    SoCal Dude
    Last edited by SoCal Dude; 12-21-2020, 12:13 AM.

  • #2
    Originally posted by SoCal Dude View Post
    Hello, Everyone.


    May I ask some more questions?

    H3ll NO!!!

    You wait until the crusty old farts pipe up,,,

    And if they give you too much chit lemme knoe.

    Ask away..... JR

    Comment


    • #3
      i will depend on what you expect from the process.

      Comment


      • #4
        Originally posted by SoCal Dude View Post
        Hello, Everyone. I'm new around here. In fact I think this might be my first post ever on this forum..........
        Since it is your 46th post...looks like you're smoking some righteous ganja, mon!
        Location: Saskatoon, Saskatchewan, Canada

        Comment


        • #5
          I did not know you could lap plastic.
          Either I am ignorant or you are crazy.

          -Doozer
          DZER

          Comment


          • #6
            https://www.youtube.com/watch?v=av-FVpp2hs4
            https://www.youtube.com/watch?v=4h5-VbElr10

            Did it come with the accessories?
            Last edited by Stu; 12-21-2020, 08:39 AM.

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            • #7
              Originally posted by Arcane View Post

              Since it is your 46th post...looks like you're smoking some righteous ganja, mon!
              Someone is having trouble keeping track of the stories and various aliases they use on different forums.

              Comment


              • #8
                Originally posted by Doozer View Post
                I did not know you could lap plastic.
                Either I am ignorant or you are crazy.

                -Doozer
                or dairy products
                in Toronto Ontario - where are you?

                Comment


                • #9
                  Originally posted by reggie_obe View Post

                  Someone is having trouble keeping track of the stories and various aliases they use on different forums.
                  That was what I was just about to post. Hopefully this version won't descend into the prickly arguing that characterized all of the prior aliases

                  Comment


                  • #10
                    There was Nelson.
                    Then Airsmith282.
                    Then there was 3phaseLightBulb.
                    Not sure if they are/were the same dude.
                    Then HoppyMachinist happened.
                    Or am I hallucinating a different thread?

                    -D
                    DZER

                    Comment


                    • #11
                      Originally posted by Doozer View Post
                      There was Nelson.
                      Then Airsmith282.
                      Then there was 3phaseLightBulb.
                      Not sure if they are/were the same dude.
                      Then HoppyMachinist happened.
                      Or am I hallucinating a different thread?

                      -D
                      3Phase and Airsmith are not the same person. I've met 3Phase in person several times and his in-person persona is a bit milder than his online persona

                      Comment


                      • #12
                        $50 Guitar picks [email protected]#@!??
                        Whoa. I have three guitars that I spent less than that on in total, and they are actually not bad instruments. ( Well, OK, the $20 1943 S.S. Stewart Archtop is in my repair queue waiting for some TLC. But it will be fabulous when I get through with it.)

                        Neat machine. In the photo it looks like it plays 33 rpm LPs, but then you did say you wanted to lap plastic with it.

                        In all seriousness, good luck and nice find. I have no experience with those things, so can't offer any useful info, but I hope it serves you well.

                        "A machinist's (WHAP!) best friend (WHAP! WHAP!) is his hammer. (WHAP!)" - Fred Tanner, foreman, Lunenburg Foundry and Engineering machine shop, circa 1979

                        Comment


                        • #13
                          Here is the previous thread:

                          https://bbs.homeshopmachinist.net/fo...eveling-device
                          http://pauleschoen.com/pix/PM08_P76_P54.png
                          Paul , P S Technology, Inc. and MrTibbs
                          USA Maryland 21030

                          Comment


                          • #14
                            Perhaps you could use a suction cup on the end of a stick (?) to hold the guitar pick
                            and use the stick to orient the pick to the grinding (lapping) wheel.
                            Almost like some knife sharpeners do a similar way.

                            -Doozer
                            DZER

                            Comment


                            • #15
                              Originally posted by mickeyf View Post
                              $50 Guitar picks [email protected]#@!??
                              Whoa. I have three guitars that I spent less than that on in total, and they are actually not bad instruments. ( Well, OK, the $20 1943 S.S. Stewart Archtop is in my repair queue waiting for some TLC. But it will be fabulous when I get through with it.)

                              Neat machine. In the photo it looks like it plays 33 rpm LPs, but then you did say you wanted to lap plastic with it.

                              In all seriousness, good luck and nice find. I have no experience with those things, so can't offer any useful info, but I hope it serves you well.
                              just search "guitar picks" on here and you'll find all of his previous threads and aliases where he goes over this in obsessive detail. Usually asks for advice on how to do something out of left field, then as soon as people make suggestions he says it can only be done one single way and storms off in a huff.

                              Comment

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