Originally Posted by David_Old_Jersey
Although I had heard about 3D printing for a while - I hadn't realised that the technology has advanced quite so far
can now get home printers for around £1k (well, according to last night's TV program!) - obviously the commercial
end somewhat more..........plus folks are starting to work in metals and even concrete! (albeit not sure how commercial
those are yet).
What caught my ear was the comment that could printout a ship in a bottle!
hurts just thinking about how that technology could radically change our world! ashore and afloat! (quick!, print me out a liferaft
I am sure that others hear know a tad more than me about the subject.........
You didn't say this this but I would think the ultimate challenge is printing a boat, so my comments are directed there. I built my own 3d printer (a Mendelmax) for about $700 US and I've done some papers on high tech manufacturing methods. So I have a bit of experience in this but I its not my profession.
In short a small one can be built right now
. In fact it has. But I think you're wondering more along the lines of a boat that's fair and pretty much complete. Now you could print at a much finer resolution but that's so much slower and the result would still take a bit of buffing at the minimum. To print a completed version where no other finishing would be needed would take a different method. It just so happens such a method is out there already: photopolymerized resin similar to this
. There's a big problem with this method of construction. The resin is way too expensive for a build this size. Also Brittleness is a concern. But I expect over time we might end up with a method that add some material on the inside, perhaps with a chopper gun. Or perhaps an exterior skin and an interior
skin with the space between a structural insulation
of some sort.
For me though, there are two giant (literally) questions. First the space required for the print. Unless the pieces are going to be joined you need a printer bed
as long as the object, so how big of a boat would you like? Also, you can be 100% certain that you will need a entirely enclosed space either for contaminates in the resin or keeping an extruded plastic warm enough to fuse and not delaminate. On the right side of the attached photo
is blue bit of extruded plastic which looks a bit stingy. That's the sort of delimitation I am thinking about. Wouldn't want that to happen when it might have to do with keeping you of the drink.
The other giant question is about the stresses involved. To me this says bulkheads out of differing material, perhaps epoxy
. It's basically an engineering question so I don't think this at all insurmountable. Ultimately though, I don't this this a practical for a home builder
What I do see as easily practical for a home builder
is similar to what minaret said. 3d panel routing of plywood
. It would take a good deal of human labor but would greatly reduce the amount of time. Basically you would be making your own kit boat. Of course, the cost -- in terms of time and space -- would make you wonder why not just buy a kit. Now, I'd like to have a router that size and certainly wish I had cut out my latest project
(a Seaclipper 20
). That would have saved me tons of time in terms of sand lines fair, alignment, easing edges, etc.
Well, that was long but at least it rambles