As an amateur boatbuilder and a sailor, I've designed and built 3 boats so far, with a 4th one on the way. None of my boats were designed after...
I believe I've read a paper somewhere that stated that once a hull approaches length:width ratio of 7:1 or greater, the exponential resistance...
Very interesting, I supposed temperature would be a bigger issue than it actually is. Building such a large annealing chamber is not something...
That is a very beautiful shot. I suspect you get a lot of questions when people see this thing on the water! Seeing this pic, two things come to...
I suspect that perhaps what TANSL meant that if the hull has no deck at all (C-shaped), even it's cross section being more or less circular...
@TANSL , I think Jan tested this: But I might be wrong too. Best he confirms this, just in case.
Well, to my understanding, longitudinal and torsional strength is provided almost entirely by the GFRP / CFRP skin. Core is only responsible for...
@Jan Herich , I agree with your observations about that paper, the flaws you pointed out are really there. Still, I have to say that I was...
Quick addition: I found a very interesting paper on the subject: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6401912/pdf/polymers-10-01262.pdf...
I have seen some attempts at using 3D prints as molds, but it hardly seems like a scalable solution because of how much prep work is required to...
Amazing stuff, man, thank you for answering my questions. The video you shared clearly shows the benefits of your slicer. By the way, is it open...
Thank you for answering my questions, this is seriously impressive, especially that you had to write your own slicer software for this, I know how...
Hi Jan, a very interesting project you have there! I am into 3D printing myself as well, so I have several questions for you. 1. What type of...
Alan, the information you posted here is a gold mine of knowledge. Thank you so much for taking the time to look up and write all this. This is...
Thanks for that link. Your suggestion to scale the widths actually makes a lot of sense to me. This might simplify calculations by a lot. I...
Sorry about that! The info you provided on the joint is good and I consider that issue solved for now. The mast would probably work as it is in...
Well, since I am using only one layer of carbon fiber tubing, I don't think it would be strong enough on it's own... Which is why I am using that...
Yes, I have that info. For the wood (Baltic pine) that I will be using, the Elastic Modulus is 13500 MPa, and the tensile strength is 94 MPA....
Okay, thanks a lot for that clarification. In that case, I will probably go for 6x. Then one more question remains: if I add a biaxial 6K carbon...
Thank you for a very thorough analysis of the issue, Alan. On your first paragraph, you stressed the point of lack of strength of butt joint -...
