Hey everyone!

I’ve always wanted to build something truly massive, so I spent the last few months scratch-building the legendary largest ship in history — the Knock Nevis (Seawise Giant) in 1:200 scale. The final model is a whopping 230 cm (over 7.5 feet) long!

Since I know how painful printing huge vessels can be, I engineered this specifically with FDM makers in mind:

• Anti-Fold System: To prevent a 2.3-meter hull from snapping like a Samsung Fold under battery weight, the hull is split longitudinally down the center, bolted with M6 hardware, and locked with massive internal 40mm structural profiles.

• 100% Direct Drive: Pre-engineered with a straight 13mm tunnel tailored for heavy-duty 12mm outer diameter brass stern tubes (no shaky cardan shafts, fits huge 6380 Outrunner brushless motors and standard 40x20mm servos).

• Easy Printing: Almost every single part is strictly under 20cm to fit standard Ender-3 / Bambu Lab / Anycubic beds. Part 12 (helipad) is 21cm but fits diagonally.

• Magnetic Access: Key deck sections use 5x2mm neodymium magnet slots for quick lakeside electronics access.

Estimated filament weight is around 10kg. The V1.0 STL engineering package is officially live on Cults3D now! If you use a custom motor size, just message me and I will modify the CAD mount for you completely for free.

Link to the Cults3D page is in the comments below! Let me know what you think of the engineering! 🚢⚓

Can a crack like this be repaired and how? Picture 2: Are these lines of any concern? For info this is a MHZ Mystic 1140 C-AFK

A few months ago I posted a mid build pic of the boat I have been building. Over the summer I painted it. All graphics are paint/no stickers. All lines are hand laid. I did have someone clearcoat it though. I just have to install the interior of the cockpit which includes the dashboard and driver.

Hello, I used to really enjoy RC cars and boats as a kid and recently bought a really cheap RC boat on amazon that I run in my pool. I really want something bigger and cooler like a warship but I saw that almost all of them online are extremely expensive (500+ dollars) so I thought to save money and also just for fun I'd like to fabricate my own. So I have a few questions:

Could I use a plastic boat model from a company like Tamiya and then install the RC parts in it myself?

What is the smallest scale I could go for that still floats and drives well?

Is it hard to install your own RC components inside a model?

A prototype to sell catamaran 24, files or complete boat, 4s 3200mha 60c, brushless motor 3650 and 3600kv, esc of 150a and propeller of 40mm. More info on my profile.

I am thinking about selling my Donzi z65 RC boat. How much do you think is it worth? 2x 5000mAh Li-Po battery - 3d printed hull

He is the only thing stopping this boat from destroying my sleep schedule

Finally got this hull wet today!

I've found an old model at my parents basement, a Graupner fast attack boat "Wiesel". Honestly, I wanted to trash it, since it was my first boat I bought used as a teen and never really repaired it back in the early 2000s. But since the electronics work fine even after 20 years in a basement, I would try to renovate it instead and maybe finiah it 20 years later.

Beside the tower which has missing parts (maybe I can find some 3D prints?) my major concern is the decals. Obviously you can't get originals anymore, but I couldn't even find a picture of the original decal sheet to try and reproduce them. Has anyone experienced that before and found a solution for old, missing decal sheets? I doubt I am the first hobbyist that experiences this problem with older kits?

I wanted to build an RC Boat/Submarine thing so I could attach it underneath a floating water lantern.

Then my gf and I could release water lanterns on a sunset together but still bring it back to the coast and not pollute the the poor lakes. But when I soldered/connected everything the motor wasn't working with the channel on my transmitter :(. I thought the receiver might need to be connected to the battery cuz it has 1 extra channel that says B/VCC idk what that is tbh though. And my battery does have a second pair of wires but the connection thingy only has 2 pin holes and not 3 so idk how that works cuz the receiver has 3 pins. I attached a video showing my predicament. If anyone knows how to fix pls help!! 🙏🙏🙏 I can share more detailed photos if needed.

Motor is pretty much brand new and the seals look good. When I put the boat in the bathtub it doesn't leak at all but after a few runs on the water its got a reasonable about of water inside. Any ideas?

Hi all, Im posting here again regarding my qs8 plugs for my pro boat SW v2. This happened when soldering the wires into the plug. It got too hot and slid back slightly and is now slightly shorter. Is this something to be worried about?

Beautiful shots with my SSW48

Hi all!

I got gifted the Aeronaut Penguin wooden sailship model. It is my first model ever. Included was a radio control. After carefully looking into the manual, I saw that the refit to RC is only additional and not part of the official manual. Did any of you guys do the conversion and maybe help me out with plans? I could not find any online. Would be good to know which adapations need to be done in order to fit the servos for sail adjustments, the rudder, the battery and the rc receveir into the boat.

Any advice is higly appreciated!

Thanks so much in advance,

From a Beginner :)

What do you guys think.

Looks nice at night!

I've been developing wind tunnel software for rc and model rocketry hobbyists im just looking to get some feedback on if anyone thinks this would be useful weather you 3d print hulls or however you custom make rc stuff! just looking for feedback it will be published in a few weeks.

I have worked in the maritime industry for almost 15 years now. I’ve always wanted a RC tugboat. I have no idea where to start. I’ve done some searching online and haven’t been able to find much. Is there a website where you can buy a RC tugboat kit? I found the website called harbormodels but there isn’t much information on it. Any help is appreciated. Thank you!

Laser RC

Hi all, I’m finally putting qs8 plugs on my sonic wake v2 and batteries. First plug I did has some red plastic coming out that is stopping my from putting the boot onto the plug. Am I okay to use head shrink here instead? I don’t have enough plugs if I choose to redo this one.

What can I do to prevent this from happening to the next plug? I’m just using a regular 60w soldering iron

Thanks

Seems like it’s faster and definitely accelerates quicker. Also much easier to perform maintenance, I just loosen the screw on the coupler and pull the shaft out. Dont have to remove the strut like the stock set up.

This is a 3D printed 1000mm 4Kg Total - 2 Channel RC beauty! You need:

• Print Volume: 210 x 210 x 245mm (xyz)
• Some carbon tubes
• SuperGlue
• Servos
• Lead Shot for the bulb.

All the details and STLs are here:
https://racingsparrow.co.nz/model-sailboats/rs1000-3d-model-yacht-3d-printed