Topic: 3D Print Hydrofoil (Read 3739 times)

Charlie · « **on:** September 19, 2019, 05:30:42 pm »

First time i have seen a model shop offering the STL Files for sale, so that you can use your own 3D printer to print your own boat. Nice looking craft as well!

https://hobbyhjorna.no/products/hydrofoil-1-50-60cm

Martin (Admin) · « **Reply #1 on:** September 19, 2019, 06:37:52 pm »

Interesting! Would love to see a model of one on the water.

I wonder if the STL's are just a 'glamour' design...... the stress points on the model don't look very robust!

Charlie · « **Reply #2 on:** September 19, 2019, 09:23:13 pm »

We need a Mayhemmer with a printer to give it a go!

carlmt · « **Reply #3 on:** September 19, 2019, 09:28:51 pm »

Needing a 20cm x 20cm print surface, it wouldn't fit in our machine.

We would need to break the files down further.....

Taranis · « **Reply #4 on:** September 19, 2019, 09:55:35 pm »

Don’t seem so inspiring to me, a bit skittish
Similar
https://youtu.be/0GW0FT1jb3A

Personally I think it needs to be a bigger heavier model
that looks like it takes some considerable effort to plane

RST · « **Reply #5 on:** September 19, 2019, 10:16:16 pm »

A Japanese fellow posted on RC groups recently his hydrofoil. Looks like he 3D printed his foils -or it was a rough a** machine job. His wasn't the surface piercing type though.

...wouldn't knock 3D printing too much though, I'm learning myself it can be pretty darn strong where you need it.

Klunk · « **Reply #6 on:** September 19, 2019, 10:44:31 pm »

I have the Gunge Sango version at home. As seen at Wicksteed earlier this year. Was saileds at Northampton open day until it hit a submerged item and bent the prop!

Umi_Ryuzuki · « **Reply #7 on:** September 20, 2019, 01:32:41 am »

The issue with 3d printing and stress points, occurs at the layering.
Poor adhesion between layers will lead to failure.I sanded and then brushed a bonding solution across seams where I was finding adhesion failures.
.
The video of the model running is fine. However, the model does seem overpowered, as opposed to skittish in design.
.
Takahashi-san's hydrofoils are 3d printed.
I needed his help to get mine running. Post construction, his water feeds are easily twice the volume of my original designs.
It makes sense, now that I have it in hand, but it didn't even occur to me that my issues were volumetric, not power.

Klunk · « **Reply #8 on:** September 20, 2019, 06:59:50 am »

it could be overpowered, but it could also be a combination of the foils flexing or the wrong prop, or a combination. too much power and the prop would cavitate in the water causing it to lose momentum until the prop bites water again. if it's the files flexing then a strong joint may be needed. depends on what material he printed with. on mine the foils are metal so no flex

john44 · « **Reply #9 on:** September 20, 2019, 08:48:32 am »

How many pieces would you have to print and then glue together to achieve that type of boat.
I mean by a average type 3D printer not a large industrial unit.
Also how long would it take?

John

Charlie · « **Reply #10 on:** September 20, 2019, 02:07:35 pm »

The website states that files are provided for Hull, Foils, Superstructure, Mast and Rudder. The Hull is made of 5 pieces. Print time would depend on the type of printer i guess, but i have no idea how long it would take.

Quote from: john44 on September 20, 2019, 08:48:32 am

How many pieces would you have to print and then glue together to achieve that type of boat.
I mean by a average type 3D printer not a large industrial unit.
Also how long would it take?

John

Charlie · « **Reply #11 on:** September 20, 2019, 02:15:32 pm »

Actually, there are no rudders shown in any of the photos. I wonder how/where they are fitted?

Klunk · « **Reply #12 on:** September 20, 2019, 02:16:22 pm »

I'm almost tempted to do it on the machines at work. how do you turn a computer on?

Taranis · « **Reply #13 on:** September 20, 2019, 04:19:48 pm »

Quote from: Charlie on September 20, 2019, 02:15:32 pm

Actually, there are no rudders shown in any of the photos. I wonder how/where they are fitted?

Possibly steered by prop speed and or counter rotation

TomHugill · « **Reply #14 on:** September 22, 2019, 08:39:18 pm »

Looks like twin prop so rank steering maybe

Umi_Ryuzuki · « **Reply #15 on:** September 23, 2019, 06:22:35 am »

The rudders would be on top of the stern foil.

derekwarner · « **Reply #16 on:** September 23, 2019, 08:25:03 am »

Umi....with the name in your image ...Urban Transit Authority displayed on a nearby vessel, I believe the image is of the lower Foil Stern Frame of one of Sydney's ill famed Hydrofoils produced in Messina Italy by the Rodriguez Shipyard

The person in choosing the vessels was either a Pastry Cook or an Accountant

as the vessels were totally unsuitable for our Harbour.......incredibly bone shaking and uncomfortable in any sea but a mill pond, were smelly and voice communication was not possible due the roar of the Italian engines that were also well known for their breakdowns

Derek

RST · « **Reply #17 on:** September 25, 2019, 09:38:39 pm »

Quote from: john44 on September 20, 2019, 08:48:32 am

How many pieces would you have to print and then glue together to achieve that type of boat.
I mean by a average type 3D printer not a large industrial unit.
Also how long would it take?

John

...Sorry to interject but as a very recent 3-D printer user I started to look on life just a little different.. For me it's still very subjective. There is the time and effort etc for 3-d printing. I only have a cheap PLA printer so some would argue it's useless and non-productive.

....But one thing taught me is if I can get a print file right -I've done it before for small hulls and my own incompetence caused more filler involved to be honest. I have to say this is really the new thing. I printed a 600mm hull recently with my 120mm printer and afer I glued the sections together it's not much worse than an average modellers attempts. I just left mine printing overnight so the results achieved are way quicker. I still have to use filler, but there's no mess or massive construction programme beforehand.

Rich

john44 · « **Reply #18 on:** September 25, 2019, 10:39:02 pm »

Hi Rich, what filler do you use, is it a special 3D printer filler or is Isapon

John

RST · « **Reply #19 on:** September 25, 2019, 10:58:15 pm »

Quote from: john44 on September 25, 2019, 10:39:02 pm

Hi Rich, what filler do you use, is it a special 3D printer filler or is Isapon

John

...solvent or the likes of isapon 2k polyester, Delux type acrylic I've never found much use apart from small crevices -which to be fair is what it was designed for, and I use regularly round my skirting boards and anything in the house gap-filling. I just use the regular decorators caulk -which seems the same thing.

I am also experimenting recently as I know PLA isn't the same as ABS but some direct solvent treatment seeems to work. Tamiya rapid solvent seemed to stick parts of a delicate PLA print together quite properly recently.

I've not tried the PLA smoother kits yet as not easy to get eliveries me being split between EU and UK.

...Meanwhile I screwed my cheap printer down to 0.1mm resolution and I have to say it's not much worse than castings received previously so far.

Rich

TugCowboy · « **Reply #20 on:** October 05, 2019, 07:35:58 am »

I may have to give this a go, at £25 it's not a bad price and I've had good experience with buying files for print before.

I'll grab them come payday and do a build(print) log

Gazza · « **Reply #21 on:** October 05, 2019, 02:42:40 pm »

a site called thingy verse ...where its FREE

https://www.thingiverse.com/thing:932853?fbclid=IwAR3i5MFSzV_V-tOfFt6vrcjRvEI3y08SC2oD6XG1T2JG__mfv8zFwoG7BPg

AND IN ACTION A FEW YEARS AGO

https://www.youtube.com/watch?v=YIWihijjeAU

Gazza

Archester · « **Reply #22 on:** April 20, 2020, 09:59:48 am »

The Vingtor model looks really nice. I might have a try 3D printing it.

I usually search for free printable models here: https://top3dshop.com/3d-model-finder/?q=hydrofoil

I'm a complete noob so I'm not sure if all boats are designed to stay at least afloat. Maybe you can suggest me a free file to start with.

Thanks, Adam

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Author Topic: 3D Print Hydrofoil (Read 3739 times)

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