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New source for 3D printed arch-bar trucks

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  • New source for 3D printed arch-bar trucks

    https://3dptrain.com/Creator/zmw/

    dave
    Modeling 1890s (because the voices in my head told me to)

  • #2
    I've never dealt with any 3D items. How durable are they for this kind of application?

    George
    The sky is not my limit, it's my playground.

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    • #3
      I wonder how many you'll break trying to get wheel sets into them with the those brake beams on the end. I wouldn't think they would spread to far. Of course it also depends on what kind of material they are made from. From my current foray into 3D printing I hear that the resin is brittle if exposed to UV light for any length of time.

      It be interesting to purchase a pair without wheels to test out the theory at what point they break.

      Bernd
      New York, Vermont & Northern Rwy. - Route of the Black Diamonds

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      • #4
        quote:


        Originally posted by George D


        How durable are they?


        They are fine. I mean they are strong enough. I find them stronger than the 0ld Red Ball cast metal versions offered by others. Only problem is their lightness.

        My experiences are with those printed by Shapeways and not this shops products.

        Bob
        It's only make-believe

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        • #5
          I work at a product design firm. We have two SLA machines and a FDM machine. For the SLA machines which use a laser to cure the resin, we have about 8-10 different types of resin.

          Some resins are flexible to simulate rubber, some are more rigid like glass filled nylon. So really it depends on the type of resin they are using. We have resins that are very durable,

          you can throw them against the wall and they won't break. I recently grew some Z scale tender tops out of three different resins. They are most likely using a durable resin, but you can

          always ask, and then look up the resin.

          Scott

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          • #6
            They look interesting Just ordered 3 of each of the HO archbars.

            Howard Garner

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            • #7
              quote:


              Originally posted by CNE1899


              Can a moderator remove these extras?

              Scott


              You Can. IN the list of Icons above YOUR post the last one is to remove the post.

              Bob
              It's only make-believe

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              • #8
                Thanks Bob.

                Scott

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                • #9
                  If you file a small notch in the bottom of the journal box on one side, just enough to relieve the amount the trucks have to spread, it makes installing wheelsets much less prone to breakage.
                  Dave Husman



                  Iron Men and wooden cars

                  Visit my website : www.wnbranch.com

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                  • #10
                    quote:


                    Originally posted by dave1905


                    If you file a small notch in the bottom of the journal box on one side, just enough to relieve the amount the trucks have to spread, it makes installing wheelsets much less prone to breakage.


                    Never thought of that. Thanks Dave.

                    Bernd
                    New York, Vermont & Northern Rwy. - Route of the Black Diamonds

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                    • #11
                      You don't need to file any notches in these. I took the product photos that are on the website. There is plenty of physical tolerance and flexibility in the material to allow wheelsets such as Kadee, Intermountain (what is depicted in the photo) and ExactRail to simply slide in place. Many UV-cured resins used in hobby applications now behave like normal polystyrene plastic.

                      I've used 3D printed trucks from several sources, including a few shapeways sellers, and only broken one, even with the simulated body-mounted brake beams. In the case of the one that broke, that was not due to deficiencies in the material nor design but rather simply my fat fingers putting too much pressure on it while making a modification to match a specific prototype.

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                      • #12
                        My six set arrived last week. Installed both Tangent and Intermontain 33" wheel set with no problems. they are flexible enough to work

                        One had a mis-shapened journal box. Notified the vendor and it was quickly replaced.

                        Now just to figure out what cars to put them under

                        Howard Garner

                        modeling 1905 in southern Minnesota

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