[PROJECT] Builds By Baz - Full Scale MK II Colonial Viper

Discussion in 'Other Toys/Hobbies' started by ASIGN_Baz, May 15, 2017.

  1. ASIGN_Baz

    ASIGN_Baz "Maker of awesome stuff"

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    EDIT: 13Aug2017: The secret is out! Oculi guessed it! Go to page four for the first pics of the build revealed

    EDIT-4Aug2017: I will change the name of this thread when I am ready to reveal what I'm up to.

    I was going to keep it a secret until finished, then reveal the completed project along with the story of how it came to be. However, from my previous builds I have found a lot of people have enjoyed following along as I fail, succeed, learn, experiment and involve everyone.

    So, rather than talk talk talk about what I'm "gunna" do, I think that once I've got to a certain stage and something to show, I will bring it out and share the work in progress as before.



    Original post:

    Hey gang. With Iron Man project all but done, (now just tweaks before getting it into kids hospitals), I am ready to start moving on with a project I've been planning a couple of years.

    This one is just for fun and once I get going I will reveal it for all those who want to follow along.

    Before we get to that, I need a little help.


    I need a *volunteer, skilled CAD 3D operator. EDIT: I have found 2 Volunteers/
    The last two 3D CAD designers who volunteered to help me have fallen through after months of planning and waiting. :upset: I totally get it that people have lives and that's just the way it goes.

    However, I can't start this project without accurate cross-sections of a physical scaled model.

    I have photographs of the model from every angle, to be loaded into a 3D CAD generator, from which vertical cross-section, profile slices can be taken at intervals along the length of the model, then drawings with dimensions of each slice and distance between slices produced. This will help me form the basic shell, (shape) and I will be scratch-building all the details from there.

    The object is 30cm long, but in order for me to reproduce it to its full scale of nearly nine metres long and keep proportions, I MUST have accurate shop drawings.

    I appreciate CAD is tedious, skilled and time-consuming so please, if anyone would want to help me, I will return the favour in some way if I can. *Perhaps I can make a knife for you?

    Up front, I require open and regular communications. Often at night. I can be a pain in the butt and sometimes pushy, but most of you already know that. :p


    This will be an epic project that will amaze all. There is no mission this time. It's just for fun and just because I can.
     
    Last edited: Aug 13, 2017
  2. Ratzz

    Ratzz Member

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    A working model of the Enterprise, with seating for 8 and actual warp drive?
     
  3. Caffeine

    Caffeine Member

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    I might be able to borrow a handheld 3d scanner for a weekend.

    I have the CAD skills but probably not the time unfortunately. Good luck!
     
  4. ASIGN_Baz

    ASIGN_Baz "Maker of awesome stuff"

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    Thus has been my problem so far. Those who have stepped up have not had the time and have dropped off the radar.
     
  5. RyoSaeba

    RyoSaeba Member

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    Very curious as to what you have got plan now. :D Is it related to the post a while back where you asked about scaling something from a 2D model?
     
  6. Ma Baker

    Ma Baker Retired

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    Ask Agg if he can put a call out on the News page. :thumbup:
     
  7. pelmen

    pelmen Member

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    So first step is you need a 3d model of a physical object correct? Is it only photos you have? are there reference point measurements included ? Is the object something you have physical access to? or can get 3d scanned?
    Does the 3d model need to be 3d printable? is it organic or mechanical? does it have moving parts requiring rigging, does it have to have parts with tight accuracy tolerances, does it need texturing?

    These are all considerations and will effect how to even start the modelling. Modelling for rendering/gaming/printing are ALL different and hard to convert/interchange. So one person might get 75% and find all their work useless to your needs.

    Also clients "scope creeping" will kill even a well paying job so have a well defined requirements document up front since you cant really pay here. So have everything well defined up front, be available to answer questions but otherwise stay out the way. If you can't, or it turns out wrong, you didn't define requirements properly.


    I don't have my client info sheet at hand as I stopped 3D work a decade ago, but the above is the general gist. The more info you can provide up front the more chance you have of attracting help from someone with the right skills. "3D" covers hundreds of specialised differing skillsets. OK so you might have IP concerns over stating the item/project up front but the more info you can provide the better. Some people only deal with characters, or buildings, or vehicles, or scifi stuff and the right person could do the job in an hour while others will struggle for two weeks. Myself I specialised in accurate technical true CAD modelling, done little photomodelling but not for years (modelling from photo sets) but the thought of modelling your newborn for a peeing animation scares the hell out of me.
     
  8. ASIGN_Baz

    ASIGN_Baz "Maker of awesome stuff"

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    Thanks heaps for the insight. :D

    Yes, I'm being cautious publicly until someone puts their hand up. I currently have one person who has just stepped up in the last few days since posting this and I have divulged the exact nature of what is required. He's going to have a go, based on information I have provided.

    Totally agree with this mate. Spot on!

    To give away a bit of an example without giving away the project, lets use a plastic model kit as an example.

    Airplaines and cars, tanks, and many other vehicles come in plastic model kits at scales of 1/72, 1/32, 1/144 etc, whatever.

    To accurately replicate one of these objects to full 1:1 size (just the outer shell shape) and you have no technical or shop drawings, (believe me I've searched for a couple of years) is challenging.

    If said object is 1-32 scale and you take vernier caliper measurements from it, then multiply your measurement by 32, then even if you are 0.5mm out, you are magnifying that mistake by 32.

    Variable mistakes like that all over your 1:1 project, would mean terrible issues with proportion and alignment, wastage of materials etc. Especially when your object is getting up around the ten metre mark.

    I have already built one model of the object using vernier measurements and multiplying by 3. The 3X end result looks ok, but already you can see the inaccuracies in it. I'd hate to imagine what it would look like full size ten times that.

    So, my best solution is to generate a 3D model from the object in hand, then slice it up into cross-sections along it's length, to generate diagrams of each cross section, (vertical slice) with accurate measurements to plot out and cut each slice.

    The slices then need to be cut to full size, let's say in plywood, spaced apart down the length of the project then filled and skinned to produce the overall shape. The shape has geometric shapes, compound curves, straights, hollows and angles.

    Texture and details are not required as I will be cutting holes, scratch-building details and moving parts, then painting/finishing that stuff freehand afterwards.

    I don't have access to a 3D scanner, nor any knowledge of how to use one or if it would suit my needs. What I do have is high resolution photographs of the object, taken from above 45degrees , level and below 45 degrees, rotated 360 degrees for each aspect against a plain backdrop with consistent lighting.

    Camera was placed on a tripod at a nominal distance to minimise distortion and the object was placed on a rotating post, photographing every few degrees of rotation.

    I can provide reference measurements of length and such of both the object I have and the length is it supposed to be.

    There are already a couple of electronic 3D models CAD/Renders out there online that I have recently discovered, however I am not expert in these things and don't know if they can be sliced up as I have specified above.

    Does that make sense?

    Baz.
     
    Last edited: May 17, 2017
  9. Caffeine

    Caffeine Member

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    Most 3D scanners will produce a 'point cloud', which is just a bunch of points on the surface of the model. Converting them in to a surface or solid model is another step that can be mostly automated, but still requires significant input.

    What you're talking about (3D model from photographs) is called photogrammetry, and again, results can vary wildly based on the features / capability of the software and the skill of the operator.

    Can you do a similar set of photographs on another not so secret object, and post them somewhere so that people can see if their software / skills are up to the task?
     
  10. ASIGN_Baz

    ASIGN_Baz "Maker of awesome stuff"

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    Interesting to know. Thanks mate. :D

    I'm sort of into it with this bloke, but we will see how we go for a bit.
     
  11. ASIGN_Baz

    ASIGN_Baz "Maker of awesome stuff"

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    Hey gang, I have some .LWO files and need to know what software opens it and if anyone has the software, or can provide a link to it free somewhere?

    Or if anyone knows of a way to reliably convert the format to something compatible with autocad.
     
  12. Caffeine

    Caffeine Member

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    That's a lightwave file. I think I could open it in 3dsmax as convert it to step or iges (more common interchange formats)
     
  13. Caffeine

    Caffeine Member

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    Alternatively blender should be able to open / view / convert lwo files

    Be warned though, the blender ui sucks
     
  14. ASIGN_Baz

    ASIGN_Baz "Maker of awesome stuff"

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    Thanks very much! Seems to be working. :thumbup:
     
  15. psychobunny

    psychobunny Member

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    Im not the best at 3d drawings but i can do a decent enough job for my cnc router so I'm happy to volunteer whatever help i can give, even if you just need to bounce ideas off someone or tidy up some drawings, but doing a full scale CAD from just photos will be a challenge and may take some time.

    It sounds like you want something like a CT scan done on the object and you still have the object.

    If I were you I would touch base with a local makerspace that has a 3d scanner and see if they can help you out in trade for an Iron Man suit show and tell. eg https://www.makehackvoid.com/our-space/ in Giralang (I have no idea if that is anywhere near you)
     
  16. ASIGN_Baz

    ASIGN_Baz "Maker of awesome stuff"

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    Thanks mate. Yes, that place is on the other side of town, but only 1/2 hour away. Good to know.

    So far my guy has found a couple of 3D CAD models online, just playing around now and sorting out software to see if he can slice it up and spit out some cross-sections for me to start cutting.

    Hopefully, we won't even need to use the photos of my model.

    I think what I'll do, is wait until I start making some decent headway with the build, then reveal all so you wonderful folks can enjoy the WIP.

    Not much point until then. I hate procrastination so I'll show what I am doing, not what I'm going to do.

    Baz.
     
  17. DarthWindu

    DarthWindu Member

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    Is there an open book on what you're up to? Guessing could be fun.

    God I hope you're making a 9m long Star Destroyer.
     
  18. Caffeine

    Caffeine Member

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    Don't we all! :thumbup:
     
  19. ASIGN_Baz

    ASIGN_Baz "Maker of awesome stuff"

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    Might be fun...

    I have two CAD operators on the case now. Should be close to some shop drawings so I can get started. In the meantime I have build a workspace, jig and accumulated a ton and a half of material to get started.
     
  20. Micah.

    Micah. Member

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    I think/hope it's a big boat
     

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