The next 3D printing project

Discussion in 'Workshop Benches' started by Mossy, Dec 4, 2021.

  1. Mossy

    Mossy A classic grump Yorkshire man Full Member

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    In the silly hours this morning I made a start on the underneath bits. Just for something different I decided to do the westie and steam pipes first. First few tries were using 3d sketching and frankly I couldn't get my head around it so went back to good old 2D.

    First the drag beam pipe work (the rest will be commercially available castings).

    2021-12-08 (2).png


    Then the under floor runs. I'm not happy with the way the steam pipe goes over the top of the westie this needs tidying up but I ran out of time

    2021-12-08 (4).png
     
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  2. Rob Pulham

    Rob Pulham Happily making models Staff Member Administrator Feature Contributor

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    Ahh got you:thumbup:
     
  3. paul_l

    paul_l Staff Member Administrator

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    See what happens when you put too much detail in - airfix and hornby never had that issue :avatar:

    If you're going to model them, I suggest having a slight recess capable of taking either a 18 x 18 or 22 x 22 mm slide cover glazing to provide the glass, then print the bars 0.8mm will print, chamfer the base with either an angle or fillet that will help reduce the need for supports as the fillet will build up from the side.

    upload_2021-12-8_23-55-13.png


    Paul
     
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  4. paul_l

    paul_l Staff Member Administrator

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    The underframe looks good. Not an issue for me at the moment, no brake pipes and only one brake shoe per side - "sweet dreams are made of this....."

    Paul
     
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  5. Mossy

    Mossy A classic grump Yorkshire man Full Member

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    Well all the pipe runs and Westie gear is done. It's currently a myriad of separate bodies, how you would even dream of printing it is for another day after a large whisky but I do like it. The air tank needs modifying as it currently hangs in mid-air, I need to extend the mounting up to floor level.

    Just the internal bits to do now.

    2021-12-10 (2).png 2021-12-10 (3).png
     
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  6. Mossy

    Mossy A classic grump Yorkshire man Full Member

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    The final parts of the Dia 25 Carriage Van have been done - loading ramps, securing beam side rails and the securing beam.

    I'm still not sure if the van will ever get printed but it's been a really interesting sketching experience.


    2021-12-11.png
     
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  7. Rob Pulham

    Rob Pulham Happily making models Staff Member Administrator Feature Contributor

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    That looks superb, too nice not to at least have a go at printing it at some point.
     
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  8. Mossy

    Mossy A classic grump Yorkshire man Full Member

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    Rob,

    I am accumulating the money to buy one of the new Mono X 6k printers (£550 roughly) I've got about half so far, when I have the fully monty I may well give it a go, assuming by then Anycubic have resolved their supply problems. You fish wagon test is ready to go I am just trying to warm up the resin, it's been in an unheated fridge cold attic for the last month or so.
     
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  9. paul_l

    paul_l Staff Member Administrator

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    Hi Mossy

    For printing the brake pipes, I'd be tempted to print the whole assembly upside down on a subframe (flat piece maybe even printed direct on the build plate with no supports), and cut a recess in the van floor's underside the accomodate the print before fitting the wheels.

    For the resin - shake well, stand in a bowl of warm water, shake well and repeat - the bottle is a good insulator :facepalm:.
    As the resin has been sitting for a while, non-transparent resins will tend to separate out so will need quite a bit of shaking to get fully mixed up again - no prizes for guessing how I know.

    Paul
     
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  10. paul_l

    paul_l Staff Member Administrator

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    When available the 6K mono should be a cracker, I'll wait to see your results before drooling too much.

    Paul
     
  11. Mossy

    Mossy A classic grump Yorkshire man Full Member

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    Paul,

    Your resin recipe arrived bout 5 minutes to late, but hey ho lets see how the run goes, 1hr 50 according to the printer, 1h 20 according to Chuti. I know who I believe
     
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  12. Mossy

    Mossy A classic grump Yorkshire man Full Member

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    Actually both were wrong 1hr 40 mins. Shabby maths by whoever wrote the programs. If you know all the available, no of slices, thickness and list and exposure times etc it should be easy to get the print time right. When I was a trainee systems analyst I would have got a right ^&%$^&*( if I let a program through with that degree of error.

    The first time I ever designed something from scratch, it was a basic financial listing with b/f and c/f totals on all the relevant columns. My supervisor checked it all before I delivered a test to the Finance Director. 10 minutes later I was summoned to his office because he had found an error - one of the columns didn't have b/f and c/f totals. True it didn't but how does a snotty nose beginner tell the FD that column was of sales voucher numbers, summing the column and having b/f and c/f didn't really achieve anything. In for a penny and tell him straight then run like ....
     
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