Mossys 3D Models

Discussion in 'Workshop Benches' started by Mossy, May 19, 2022.

  1. Mossy

    Mossy A classic grump Yorkshire man Full Member

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    Andy

    Isn't Shapeways very expensive these days?
     
  2. Andy_Sollis

    Andy_Sollis Staff Member Moderator

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    I didn’t say you had to buy it :cheers:

    There are others available.. just a suggestion :giggle:
     
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  3. paul_l

    paul_l Staff Member Administrator

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    Could you print the roof and chassis diagonally across the build plate. This would give structure to help align the body parts.

    The seats I can see being very useful - just need some holes to allow support bars, or super glue some netting to hold up the luggage.

    What is the final dimentions of the model ?

    You know your going to print it, a Styx song springs to mind - Fooling Yourself, If you don't believe it.

    :avatar:

    I'm sure Rob will back me up on this one :avatar:

    One option is to print the sides as seperate items, then create a resin cast of the assembled prints.

    Paul
     
  4. Mossy

    Mossy A classic grump Yorkshire man Full Member

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    Paul

    It's 52ft (364mm) over headstocks, either of the two body/chassis halves above would fit with a small degree of angling in two directions, run times at a guess 10-12 hours, like wise the roof would equally fit again with a 1012 hour run time. Yes the seats would be useful for my big Jim 4 wheelers, I might print a couple off to see what the fit is like, but I am still battling to draw the quadrants for Andy's project. Frankly everything I have tried has been an abject failure, so he may need to end up painting the quadrants and just using transfers for the lettering. I am in the middle of one final go.
     
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  5. paul_l

    paul_l Staff Member Administrator

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    And now Le Kicker - we know someone with an M3 Max

    upload_2023-9-27_11-31-49.png

    I modelled up a block 364 x 56 x 7 mm to represent the chassis / roof, tilted at 45 degrees, it can print both at a time it reckons 11h55m - I'd say probably 14h and best part 3/4 litre of resin, but is doable.

    What was that I just heard be muttered



    Paul
     
  6. Mossy

    Mossy A classic grump Yorkshire man Full Member

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    Paul

    One could go off smarty pants with M3 Max's, aren't they just show offs toys. :avatar: :hismiley:If (very big if) I were to print it, I would print the chassis/body as a single print, upside down as a pimpley bottom texture to the internal floor wouldn't matter, obviously in 2 halves. That would make the volume needed for the body print roughly 62mm wide, 58mm high and 182mm long, while the roof volume would be 60mm wide. 16mm high and 182mm long. 4 prints each of about 10 hours or more plus all the bits and pieces probably another 4-5 hour run. Body print volume about 85ml per print.
     
  7. Andy_Sollis

    Andy_Sollis Staff Member Moderator

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    I am most grateful for you even trying without me asking. not sure what I did to deserve the kindness… :worship:

    however I’d it helps, I have an almost straight on shot of a complete one if that helps?
     
  8. Mossy

    Mossy A classic grump Yorkshire man Full Member

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    Andy,

    Surely the primary purpose of a forum like this isn't to do a "Look at me aren't I wonderful" but the free exchange of help, support and advice, which it provides by the bucket full. I know my way around pageplus, or at least thought I did, so offering to have a go for you was the obvious thing to do. I think I have chewed my way through close to a 100 pages of help text so far, but if I crack it, it may come in useful in the future. I don't think a straight on shot would help thanks, it's basically creating the black frame that's the problem, once that's done the rest would be the proverbial p-o-p.
     
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  9. Andy_Sollis

    Andy_Sollis Staff Member Moderator

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    your quite right. Indeed it (hopefully) is!
    I am in your debt!
     
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  10. paul_l

    paul_l Staff Member Administrator

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    OK Mossy

    Were close but no cigar - yet

    Model at 45 on the Y axis, and rotated on the Z to fit diagonally.
    Supports added with 5mm lift

    upload_2023-9-27_23-10-4.png

    Note top is clipped, as well as a few supports - we'd get away with that.

    Reducing the lift height to 1.5mm - too low for my liking fits the model in

    upload_2023-9-27_23-13-12.png

    And just for interest

    upload_2023-9-27_23-14-19.png

    13h21m - I'd guess at 15 to 20 hours in reality and 325 ml / 355g of resin and @ £30 per litre would cost £10.70 of resin.
    The out of bound supports can edited, not so sure about the 1.5mm lift height for the supports.

    Possible ............

    Paul
     
  11. paul_l

    paul_l Staff Member Administrator

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    And printed the other way up

    upload_2023-9-27_23-27-25.png

    Still stuck with 1.5mm lift
     
  12. Mossy

    Mossy A classic grump Yorkshire man Full Member

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    Hi Paul,

    I'm seriously impressed that you got so close, sadly I can't afford or have a lot of use for an M3 Max. If the chassis was printed separately that would save 6mm which would allow for a sensible lift but add 15 hours or so to the total print time. Just as an aside the 3 models of what became know as the B Set which I drew a couple of years ago and are 49ft long (343mm) would fit easily. A B set plus loco or an autocar plus BTP loco or 2 autocars top and tailed autocars with a BTP were common use formations of the NER and continued being standard formations into LNER days.
     
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  13. paul_l

    paul_l Staff Member Administrator

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    The body I would be tempted to print in two halves without a floor but with partitions parallel to the build plate as per the van builds. Using plasticard or brass for the floor (1 piece),

    Time wise

    upload_2023-9-28_23-40-51.png

    You could easily fit both halves on the build plate, with the print time being approx 3 to 4 hours.
    The roof and chassis, printed one of each piece printed at 45 degrees will take approx 14 hours.
    So fingers crossed and a good tail wind we should be able to print a coach per day.
    The chassis could be printed with or without floors. Putting the partitions into the body build will help retain the shape.

    Probably more doable than printing the body at 45 degrees.

    Also interesting how much resin is saved - approx 60% saving in resin - £10.64 printed at 45 degrees, against £4.01 printed in parallel to the build plate with 5mm lift. There's more resin being used in the supports than the model.

    Paul
     
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  14. Mossy

    Mossy A classic grump Yorkshire man Full Member

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    I think my forgetory is taking over from my memory. I knew I had modelled queen posts needed for the not to be printed, but couldn't think where, anyway after a bit of furtaling around I found them, in an obvious place, my 49ft chassis project, surprise surprise there was also a second design in the same folder - fox heavy bogie, I had to have a look and yep a model of a Fox bogie. After a bit of rummaging about I realised it has 8' 6" centres while the NER version has 8' centres, but a couple of hours work and we now have one side of a fox bogie with 8' centres. Perfect.

    Bogie side frame.jpg
     
    Last edited: Sep 30, 2023
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  15. paul_l

    paul_l Staff Member Administrator

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    Nice, although I think I would make the footboard brackets out of metal strip, reinforced with a piece of wire soldered to the rear of the strip.

    Paul
     
  16. Mossy

    Mossy A classic grump Yorkshire man Full Member

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    Paul

    I think I will give it a go as it stands, but if necessary I will give your idea a go. I just need to figure out how to mount it and if it could be compensated.
     
  17. paul_l

    paul_l Staff Member Administrator

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    How about clothing snaps / press studs - amazon link for 10mm dia

    upload_2023-9-30_14-50-29.png

    15, 19 & 25 mm diameter versions are available (see link).

    Use these to mount the bogie to the chassis. The short wheelbase of the bogie plus the play in the stud should be enough to cope with any irregularities.

    Paul
     
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  18. Mossy

    Mossy A classic grump Yorkshire man Full Member

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    I have fished out the assembly notes/diagrams for the D&S version and replicated Danny Pinnock's design just in resin, I think it will work, anyway my sewing is crap I'd have a right job attaching those snap ons to chassis and bogie. :hammer:.
     
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  19. paul_l

    paul_l Staff Member Administrator

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    Thats what super glue is, just remember not to leave the finger in contact otherwise it may be difficult to assemble the stud.
     
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  20. Andy_Sollis

    Andy_Sollis Staff Member Moderator

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    I did this on an 009 coach. The one drawback is no springing to keep the body square unless one bogie has half circles to press up to the underfloor to stop it tipping side to side.
     

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