Building the Bouchie Dory Part 3 - Designing the dory part 3
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- Опубликовано: 13 ноя 2018
- In this episode we create the body plan portion of our dory lofting and play around with what happens when you juggle some lines about.
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You made that sound like it could be possible to have a go at that.
I suggest you do just that. It only costs you a little time.
Excellent demonstration of why it is important to get your line work done on paper and not get too carried away with changing the lines during the build. What you put on paper is much cheaper and easier to change than expensive materials. The color coded lines make this exercise of designing much clearer. Thank you again for another excellent video.
Thanks Matt, but I did end up changing my lines, however I did that at the full size lofting stage. No wasted expense other than the time I spent drawing up a set of finished drawings earlier but that's fine. The new ones will be all the better because of it.
Now, I finally understand what it means, how to get your ducks in order. lol
I've been thinking of doing my own wooden boat. I'm a cad designer by trade and actually work on Osv's. Translating it into a small boat is a new experience
I highly encourage you to give it a try. I took a crack at boat design in cad long before 3D tools were available. I came to the conclusion that the screen size was too limiting a factor. Of course back then, you couldn't get a screen as large as a drafting board. Now my opinion is that working with weights and splines is an interesting organic process that I really enjoy and am not willing to hand that job over to a computer. But by all means, if you have the chops, go for it.
These three videos were great reminders of what I struggled with and glazed over in my introduction to naval architecture courses in college. I was one of the years that didn’t get any drafting practice and went straight to computer programs that more or less automatically adjusted lines in other views as you tweaked, pulled, and prodded points. Superb explanation. It was handy but the simple act of drafting a few lines like that really drives home the effects and understanding. I think that was why they ended up reintegrating it into the curriculum in later years.
My Dad was a mechanical engineer so I literally grew up playing at a drafting board. I've seen first hand just how fast one can lay down lines on paper. I worked for him doing some drafting in my teens but eventually CAD became available and we gradually made the switch. It didn't make drawing faster but it did make editing and assembly drawings stronger tool. I love what can be done with technology and there are time I wish I had that resource when it comes to boat design. That said, I tried applying CAD to drawing boats and never found it as practical for laying down a fresh set of lines. It is so much easier to judge your results on paper. of course, once you have a set of lines established I do believe a computer can do some fantastic things with it. I'm glad to hear drawing by hand has been re-introduced. It can't be beat for hammering in some basic principals.
Well I wasn't sure if I could wrap my head around that but I get it. Awesome job explaining drafting.
That was an excellent video Mark.👍
Going on your playlist
Really nice treatment of the projections.
8:15 And I began to understand why you picked a dory for an example.
Yup. The principals are the same for round bottom craft but the dory makes it so much easier to convey the basics.
Great video! Really appreciated it, going to give it a go on my next project!
William Barrett good to hear. If you've tried your hand at building boats from full sized patterns or grid transferred mould shapes, I feel that lofting can really take you to the next level in your skill development. The process at scale is exactly the same as doing it full size. Full size is even easier in some ways. Greg Rossel's books do a good job of graphically walking you through it.
Good coverage of lofting , it`s all quite simple when you think about it.
Having said that , I`m scratching my head on projecting ( predicting ) the curve of a sheerline from a straight edged and parallel sided panel when placed against a pre-determined station ( flared section ) . Many sharpies and some double ended canoes are made this way .How do you project the curve from a straight sided panel , it`s kind of working backwards , but there is no profile of the sheerline or rocker to start with .....???
There must be a way to do this without first modelling and building the the hull as a 3 D model. Without computers.
If you are working with just straight edges you could use trigonometry to calculate the resulting sheer but I think simple cardboard modelling is actually a better way to go about it. In fact I have a short video where I explore that very subject. I go about it in a hit and miss way. ruclips.net/video/HFQ5lu9Rto0/видео.htmlsub_confirmation=1