Time to resurrect the Ferrocement yacht? - Page 3 - SailNet Community
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post #21 of 25 Old 07-16-2015
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Re: Time to resurrect the Ferrocement yacht?

Originally Posted by goat View Post
That's where the 3-D printer comes in.
Eh, those are for easy stupid stuff like guns.

Show me someone who 3-D printed a two-speed self tailer.

(Did see some instructions for homebrewing a nice furling drum, would cut the mustard for small boats up to maybe 8m)
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post #22 of 25 Old 07-16-2015
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Re: Time to resurrect the Ferrocement yacht?

Originally Posted by goat View Post
That's where the 3-D printer comes in.

I read an article somewhere about using a small 3D printer on board to create small items like blocks whilst cruising. They did mention that the final product wasn't as durable as those you'd buy commercially but it was enough to get by on. I wish I could remember where I read that.

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post #23 of 25 Old 07-16-2015
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Re: Time to resurrect the Ferrocement yacht?

No matter how you "slice" its still a "stone boat."!
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post #24 of 25 Old 07-19-2015
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Re: Time to resurrect the Ferrocement yacht?

The simple answer to the OP is no.

There were plasticizers in the 70's and even a resin bog called Ferr-A-Lite that replaced the mortar with a sort of fiberglass putty.

You still end up with a floating footpath with minimal residual value.

I once heard building a ferro armature described as entailing "Thousands of hours of soul destroying work".

I can't see ferro ever becoming viable again until the other materials become prohibitively expensive

I, myself, personally intend to continue being outspoken and opinionated, intolerant of all fanatics, fools and ignoramuses, deeply suspicious of all those who have "found the answer" and on my bad days, downright rude.
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post #25 of 25 Old 07-20-2015
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Re: Time to resurrect the Ferrocement yacht?

The real issue is that the hull itself just isn't that expensive. No matter how much people see a home built hull and think someone has built a boat, all they have really done is the rough in work. For most boats the hull itself is around 20% the purchase price. Even if a fero hull is 50% the cost of a fiberglass hull, so what?

Let's say you recreated a Beneteau 41 in concrete instead of fiberglass. From the base $280,000 boat the hull can be assumed to cost $56,000. So the total savings is going to be around $28,000. Now tring to sell a one year old Beneteau 41 is going to be relatively easy, trying to sell a custom concrete 41' cruiser.

Btw building the hull from carbon instead of fiberglass would cost about $40,000 more.

In the grand scheme of things the hull just isn't such a huge cost of production that it is going to matter that much.

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