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Light, Strong, Cheap. Pick Two.
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Hey, Do any of you builders out there use a CAD Program to design parts, or entire hulls?  What program do you use?  AutoCad Inventor Suits are $7,000+ 

I designed the hull I have now in Microsoft Excel, but I know I am going to want to build another hull in the years to come.  I am looking to do a better job on this one.
 

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I Love microskiff.com!
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I run Auto-Cad for a living now.  You might try getting a boot leg copy but they really onto that right now.  Try to get something from pre 2006 and they not going to care to much about it.

ETA: How do you design parts on Excel?
 

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Light, Strong, Cheap. Pick Two.
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Discussion Starter #4
I run Auto-Cad for a living now.  You might try getting a boot leg copy but they really onto that right now.  Try to get something from pre 2006 and they not going to care to much about it.

ETA:  How do you design parts on Excel?

I just curve fit two dimiensional equations into a 16ft long by 5ft wide by 2ft deep box. Then I assembled a flat platform and poped a chalk line grid on it then transfered my lines from excel to the platform. 

Recognize the Quadratic?  y=z*x^4 haha.


I did the same for the keel, but it was a combination of a straight line and a parabola. The lower chine is a parabola (x^2) and the splash rail is a Cubic (x^3)

 

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Freeship and Rhino 3D are the best combo for boat design that I've used.

I use AutoCAD, Microstation, Revit, and Sketchup on a daily basis and wouldn't use any of those to design a boat if I could avoid it. Well, maybe just for 2d details. For 3d design.....use freeship and rhino.
 

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You can run a free copy (time limited) of Autodesk if you are only going to do one job.

http://usa.autodesk.com/autocad/

I am old enough to just use slide rule, graph paper and spline to figure out the boats I build. Not so with aircraft though and there is a steep learning curve just for one boat.

Best regards,
Frank_S
 

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I Love microskiff.com!
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You're an engineer and you don't have access to cad?

Do you drive trains? Just kidding.

I've always had access to my works versions.

AutoCAD is ok for designing a skiff but I use my own technique I guess. I alway take my cross-sections and line them out on a 3D polyline so I can get a feel of what it's going to look like 3D.

I've had friends make 3D models for me on some hull designs but it really didn't help much as I already had a feel of it's shape.
 

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Light, Strong, Cheap. Pick Two.
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Discussion Starter #9
You're an engineer and you don't have access to cad?

Do you drive trains?  Just kidding. 

I've always had access to my works versions. 

AutoCAD is ok for designing a skiff but I use my own technique I guess.  I alway take my cross-sections and line them out on a 3D polyline so I can get a feel of what it's going to look like 3D. 

I've had friends make 3D models for me on some hull designs but it really didn't help much as I already had a feel of it's shape. 

Yea, My employers policy is "we have drafters for that." It Really grinds my gears. All I have is AutoCAd light from school and It isnt good enough.
 

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Cadd....ptttthpt! ;)

Half scale builds are the way to go in order to figure out the shape
and the construction problems to be encountered in the project.

https://picasaweb.google.com/bdefalco/Next
 

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going to try to draw one out in mastercam you can get a free trial version from their site , as well as surfcam, bobcad, gibbscam and featurecam
 

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going to try to draw one out in mastercam you can get a free trial version from their site , as well as surfcam, bobcad, gibbscam and featurecam
Although I have not tried it yet, AutoCAD has released Inventor Fusion 2013 free for download. check it out and see if that's something you might like.
 
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