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Loft or Boundary Help

Question asked by Arthur McRae on Aug 3, 2016
Latest reply on Aug 18, 2016 by Dave Bear

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Hello Forum.

I need help. What I intended was a single direction compressed mountain range for some signage. My process was to take the Topographical image and map them out onto a series of planes. I then used a global variable to compress them down to a thickness total of 6". I am now trying to make a solid of the series of splines I created from the topographical data. This is where I'm stuck. I need to eventually turn this into a STEP file for our router to carve out. Thanks in advance for any/all suggestions and assistance.

Paul Salvador Aug 3, 2016 2:34 PM

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Hi Arthur,.. here is how I do my topo's.... I'm using Terrain2STL,...

http://jthatch.com/Terrain2STL/

Bull Mountain (49.5304402, -115.410215)

..and I set the box size to 360,.. save (download)...

..open the STL in Rhino3D and use Drape (spacing =1 ) and saveas a IGES... open .*.3dm (rhino file) in SolidWorks.

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TOPO_COMPRESS.SLDPRT.zip3.2 MB

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Mark Biasotti Aug 3, 2016 11:59 AM
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Hi Arthur,

Interesting that in your topo geometry you have some "undercuts" - i.e. cliff hangers? If you want a rough useful top why not just extrude profiles of the different levels of the topo profiles?

Mark
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- Arthur McRae @ Mark Biasotti on Aug 3, 2016 12:17 PM
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  While that is an option I was trying to "smooth" the surface. I'm sure how to transition the extruded layers to a clean surface instead of steps.
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Paul Salvador Aug 3, 2016 12:16 PM
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Arthur,.. as noted by Mark,.. the profiles are creating some problems and it may create problems for your cnc router as well?
..anyhow, it's possible using a loft but the bottom corner (sketch 9 and 10) would need some attention (or add material) to solidify. (I'm surprised it resolved as is?)
btw, are you parsing topo data to create this.. and scaling the depth?.. because,.. you could try without scaling .. then try using the scale feature to later compress (worth a try)?
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- TOPO_COMPRESS-zxys.zip7.4 MB
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- Paul Salvador @ Paul Salvador on Aug 3, 2016 12:45 PM
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  btw... back in June I was messing around doing topo translations.. "topo-grandcanyon-kirkwood-oahu-craterlake-zxys.png"... FUN!
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  - Dave Bear @ Paul Salvador on Aug 17, 2016 9:51 AM
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    You can really do this in Solidworks??????
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    - John Stoltzfus @ Dave Bear on Aug 17, 2016 10:15 AM
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      Paul Salvador can and will do anything -
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      - Dave Bear @ John Stoltzfus on Aug 18, 2016 7:35 AM
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        That bit I DID know lol.........
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Arthur McRae Aug 3, 2016 1:00 PM
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Google Maps
I'm using this mountain range. I used 1200 m as my base. I'm using the Topo Data to get my points mapped out with the global variable of "Plane Dim" set at 5" then compress it down to .705" to get the 6" material depth we have.
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- Paul Salvador @ Arthur McRae on Aug 3, 2016 2:34 PM
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  Hi Arthur,.. here is how I do my topo's.... I'm using Terrain2STL,...
  http://jthatch.com/Terrain2STL/
  Bull Mountain (49.5304402, -115.410215)
  ..and I set the box size to 360,.. save (download)...
  ..open the STL in Rhino3D and use Drape (spacing =1 ) and saveas a IGES... open .*.3dm (rhino file) in SolidWorks.
  Attachments
  - Bull_Mountain_rawmodel-1940.zip2.0 MB
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  - Arthur McRae @ Paul Salvador on Aug 3, 2016 1:46 PM
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    You my friend have made my day.
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    - Paul Salvador @ Arthur McRae on Aug 3, 2016 1:55 PM
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      No problem man,... it's really easy and fun to make these!
      I love mountains.. I lived in Mammoth Lakes, Ca for 10 years,.. I miss it!
      Cheers!
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      - Mark Biasotti @ Paul Salvador on Aug 10, 2016 10:06 PM
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        Those are amazing Topo models Paul !
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        Paul Salvador @ Mark Biasotti on Aug 11, 2016 7:08 PM
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        Glad you like,... makes me want to go hiking!!
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Arthur McRae Aug 16, 2016 2:54 PM
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In case anyone was interested in the finished project. It was a proposal for a high end Strata Management, this signage would have been routered out of High density foam and sealed. This signage would have had the same mountain range behind the sign. Unfortunately this option wasn't chosen.
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- Mountain Profile Signage.zip23.6 MB
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- John Stoltzfus @ Arthur McRae on Aug 16, 2016 3:10 PM
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  Awesome Arthur McRae
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- Paul Salvador @ Arthur McRae on Aug 16, 2016 8:31 PM
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  Nice!
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Christian Chu Aug 17, 2016 10:37 AM
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Boundary is the best choice since boundary feature has more options
How often you model this kind of surface? if yes, consider using Power Surfacing (nPower), it's perfect tool for this kind of model
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- Arthur McRae @ Christian Chu on Aug 17, 2016 4:02 PM
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  This was a new concept we were trying out. Never done anything quite like this before. We've done shapes with drafts for molded plastic forms but nothing like this before.
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