3D laser scanner access for scanning w32 hull

  • August 09, 2014 7:59 PM
    Message # 3069879
    Anonymous member (Administrator)

    I would like to know if any of the WOA members work with a laser scanning device suitable for scanning into digital format the hull of a W32? 

    The idea would be to have the hull in digital format and then use software to analyse water flow over the hull with and without modifications. 

    Look at the area below in red - I wonder if fairing this area would result in better hull performance if so - what modification to the area would be both workable and cost effective? 

  • August 11, 2014 4:20 PM
    Reply # 3071245 on 3069879
    Deleted user

    It would be great to have a complete stem to stern scan of the hull (the house would be a good bonus as well.)    

    (bit cloud) stl or ? file

    It would allow much work to be done with regard to underwater performance improvements, and also would allow others to have there local cnc shop cut a scale model of the hull. OR you could use it to print a 3D model.

    In any case, here is hoping some one has the equipment or knows someone who is interested in helping everyone out and can scan a hull.

    To that end I would ask Bud if he knew if all of the molds for the w32 hulls were made from the same plug?

    Last modified: November 03, 2014 9:22 AM | Deleted user
  • October 31, 2014 7:30 AM
    Reply # 3138068 on 3069879
    Hey gents,

    I've thought about this in the past. I remember reading some time ago on cruiser's forum about someone making a "measured scan" of their hull. They setup a horizontal line between external mounts. Then from this they hung a solid plumb bob line that could be used as a stationary object from which to measure the distance to the hull from the plumb bob using a perpendicular line..

    Starting at the bow, they took measurements going down the hull every 6", then moved the plumb bob aft 6" and repeated. It rendered something like 900 measurements 

    That's a lot of measurements, but the person was able to put it in to some program and create a really accurate rendition of the hull.

    From the shadows,


  • November 01, 2014 5:45 AM
    Reply # 3138587 on 3069879

    There have been articles recently about programs that can create 3D models from 2D video. In a demo they flew a camera above a city and made 3D models of all the buildings. That would save you a whole lot of labor.  

    I can't tell you where to find the software, but maybe you could find it by search.i

    How long until someone has a 3D printer able to make us a new W32 hull based on photos?  Just kidding (but perhaps not for long). Jeff & Wendy could have used one recently to print new pintles and gudgeons in silicon bronze.

  • November 03, 2014 9:06 AM
    Reply # 3139639 on 3069879
    Deleted user

    The 3d printing is a great thing!, the bronze parts may need a second step (sand casting of the printed part)  But cool none the less, however for the pins this may not be the way.

    As for the 3d scan we need to get it better than 1/16" ;  1/120" would be better to make the effort useful.

    Aaron the tape measure is good, but sag, out of level, miss read, and miss location of read would doom the effort to way more than 1/16" error

    Along the 3D photo scanning line I would ask?

    Has anybody done any scanning with the TRNIO app? if so, how accurate?, how big?

    I may try this app  next time, at the Boat? If it works out, I will share. But I do not have high hopes of a good scan = less the 1/16" miss measure with the photo scan without ref grid or shape.

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