plank development

[Walter Simmons]

Hello everyone.

We build lapstrake boats (wherries, mostly) and I am in the process of using the pro version to develop kits of some of our existing designs for model makers. If these kits were for multi-chine round bottom boats it would be no problem, but these planks need to overlap.

On the full size boats, like my avatar, the lap width is 3/4”. My question is, how do I go about developing overlapping planks?

I certainly hope I didn’t overlook that in the manual, though it is possible, where I’m not as fast on the uptake as I once was.

Thanks for your help.
Walter Simmons

[Walter Simmons]

I can’t tell whether no one else is interested in this topic or whether no one wants to touch it.

For anyone who might be interested, there is a solution…but it’s ugly. You can subdivide the control net and then manipulate every other plank to allow for a 3/4” increase in height (the lap width) along the upper edge. After developing those planks, go back and repeat the process for the remaining planks and develop those as well. Those files can then be exported. And to carry it a step further, the files can be combined, re-imported into TurboCAD and output as a dxf.

TC allows for an edge offset. DS is such a feature-rich program that I had hoped that there was a similar feature somewhere within, and that I was simply unable to locate it. Apparently not.

In a related question, why is it that when the profile view shows the starboard side of the vessel that the plate (plank) development arrays the planks with the bow to the left? Curious.

Thanks.

[Hrvoje]

ducktrap wrote:

I can’t tell whether no one else is interested in this topic or whether no one wants to touch it.
…

Hi! It seems to me that this site is not overcrowded. So, it is difficult to find the person with the same interest. It is the same problem with my posts.

Kind regards, Hrvoje

[Hrvoje]

Can you make the planking plan using your method? I am interested for planks which do not overlap.

Kind regards, Hrvoje

[Marven]

You can only do this by modeling each plank edge as a knuckle line (crease edge).
Once that has been done each plank can be moved to its own layer. Make sure the “developaple” property of the layer is set so the program knows it should be flattened.
Then flatten the plank to 2D in the “Plate developments” window. There’s only one downside, and it is that the free version does not export or print those developments.

[Hrvoje]

Thank you Marven! I will try this method on my next model. 🙂

Kind regards, Hrvoje

[Author]

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