Floating Seed Sprouter

in Product Design held by stavro
Contest Ended, Winner(s) have been selected.
The device has to be no more than 2.5" in diameter - it needs to fit in a cup.

It will be 3D printed, and then plastic mold manufactured.

The device needs to support 100g of weight, not tip over, and stay afloat.

Specifically, the 100g weight will be no larger with a 2" diameter, and can be as small as .25" in diameter. I envision 3 adjustable, horizontal poles that are attached in the inside walls of the device, that can move vertically up/down, depending on the weight of the seed, and in/out, depending on the size of the seed.

Lastly, there needs to be a hole that is no smaller than .5 inches, at the bottom of the device so water can get through.

Ideally, I would like to see buoyancy / fluid simulations of this in action, to ensure it meets the above criteria. Any other questions, please let me know.
I would like the model in STL or OBJ format.
  1. Any program.
Additional Information
I did not make this clear, per my initial description. I would need a .5" diameter hole at the bottom to float device, not only for the water to get through, but also for the roots of the seed to get through, while it continues to sprout. Please see added attachments.

Additionally, the way that I envisioned the seed would stay at the appropriate level, is by having 3 adjustable horizontal poles in the inside wall of the device. Please see image attached, and also see my other project here on cadcrowd: Simple extendable / telescoping mini pole, for a reference of these horizontal poles.

I have received many great designs. I am extending this project for one more week to reply to a few more designers before I make my decision. Thank you all very much for your talent and effort on this. It is very much appreciated.


1st Winner
#48 Float adjust with thread - by Adriano Ordoz Barissa by Adriano Ordoz Barissa
In this model I designed two pieces of easy molding where a nozzle system is not necessary in the mold for extraction, acting by forced extraction.
  The parts function as a drill chuck, where by tightening the green part on the yellow float it lowers in relation to the water level and decreases the diameter of the hole.
  I think this could be a good solution for the project.
Mar 28, 2017 16:56
2nd Winner
#53 New Seed Floating Sprouter by sherifelsheikh
Mar 29, 2017 10:30
#43 Floating Seed Sprouter Flower by Decker
Here is a leaf or floating flower design to support the growth of a seed. I have placed a fixture that has fingers on it . This fixture will probably have to either come in various sizes to support smaller seeds or be manufactured like a comb with small bristles to hold the seed in place. Anyway, its a concept good luck in your product development. Feel free to give me a ring and ask for any product manufacturing advice. I have a very good background in product development and am always open to offering up free advice.
Mar 27, 2017 15:52
#29 Floating Seed Sprouter by markol
Floating Seed Sprouter can stand on a bowl or glass.
Mar 23, 2017 11:28
#30 Adjustable Floating Seed Sprouter by sldraftingdesign
Here is my take on the design that you requested. Some of the design specs:
1) Ø2.5" Overall with Ø0.50" hole in the middle
2) 0.3000" tall with .050" wall thickness.
3) Uses a stackable Peg system that includes a retainer peg, adder peg, and topper peg with extensions to hold the seed at the desired height.
4) Pegs have (4) notches slots to go in the adjust in and out to meed the size of the seed.
5) Holes in bottom to allow water though.
6) Proper Draft angles and wall thickness for injection molding. Also 3D printable. I can provide all STL files if chosen.
Out of all the visible designs, this is the only one that is adjustable per your requirements.
Mar 23, 2017 15:13
#31 Floating Seed Sprouter by Stelios
Mar 23, 2017 19:47
#32 Float with height adjustment by Adriano Ordoz Barissa
Very simple and easy to manufacture design
Mar 24, 2017 15:58
#33 Sprouter by Mahbub
Details attached. Thanks
Mar 25, 2017 6:14
#34 Floating Seed Sprouter by Stella X
Have taken into consideration buoyancy so made it hollow and not easy to tip over. Depending on the weights of seeds the bottom of the hole can be adjusted so the right amount of buoyancy can be achieved. The clean hole for the seed makes it easier to untangle when ready to be planted. For multiple sized seeds a net could be added. Have added handles for options to use poles to adjust levels in water. Adjustable poles ready if needed.
This is 3D print ready. Though for use a waterproof materials needs to be applied.
Mar 25, 2017 11:31
#35 The Germinator V1 by Michael Jonquière
Designed with FDA compliant materials and important CoM considerations for stable buoyancy. This single part is designed to self-align in the tank, and automatically adapt for different weights of substrate. Parts stack well for storage and importantly the are DFM - very economical piece part price and tooling costs make this design future proof and reliable.
Mar 25, 2017 17:45
#36 Sprouter Final 7.0 by Chamal Jayasinghe
The rotatable middle part can be used to adjust the height and the sliding parts can be used to adjust based on the size of the seed. To keep the seed tighten to the device a small rubber band can be used.
The design is complete and if face any issues regarding STLs please contact , Sorry and quite tired.....
Mar 25, 2017 19:21
#37 Floating Seed Sprouter2 by Stelios
Mar 25, 2017 20:17
#38 Adjustable Floating Seed Sprouter by Samadoni
Screw to adjust seed height with respect to water level.
Side-Slit to monitor root growth and observe water level
Mar 25, 2017 22:01
#39 Floating Seed Sprouter3 by Stelios
Mar 26, 2017 0:42
#40 Sprouter_00 by Pop Horea
I have it in STL & OBJ formats. Can export in DWG as well.
Mar 26, 2017 6:26
#41 Sprouter_2,5inch by Pop Horea
I've adjusted the diameter of sprouter to 2,5 inch.
Mar 26, 2017 7:44
#44 Floating Seed Sprouter V3 by N-Design
Mar 27, 2017 18:25
#45 Floating Seed Sprouter V4 by N-Design
Mar 27, 2017 19:59
#47 Floating Design by Adam Taufik
Here we go sir. original idea.
Attachment file .ipt amd .Stl file
for more screenshoot you can mesge me sir .
Thaks. hope you like it.
Mar 28, 2017 15:30
#49 Sprouter Final by Chamal Jayasinghe
Calculations done for floating , Size limitations achieved , Height and seed holding devices are adjustable.
Meets all the criteria s mentioned in request.
Mar 28, 2017 19:44
#50 SFLOUTER by unocuatro
2pcs. Meet geometry requirements. Buoyancy Calcs. Adjustable height. STL Files.
Mar 29, 2017 4:43
#51 Adjustable Floating Sprouter by Alfath L.I
This model have 2 adjustable height surface, so you can freely adjust the height like you wanted. Around the tube, i put a part which will be filled with air in order to maintain stability of the tube and also act as buoyant reserve for this object. I put 4 parts in STL format. It is a really simple assembly, so i hope that you can figure it out by yourself.
If you're interested in my idea model of adjustable sprouter, but wanted something to be changed you can contact me by email. I hope you check out my model and tell me if you're interested in printing it.
and also thank you for the fun contest.
Mar 29, 2017 9:05
#52 seed_sprouter by stevepap5
This is my design of the seed_sprouter mated with a plastic cup
Mar 29, 2017 9:25
#54 Floating Seed Sprouter by A-Designs
This Model is as per given dimension and specification......
Mar 29, 2017 11:30
#15 Sprouter and seed assembly 2 by Devondesigner
3 improvements on my previous design.
1. Mould the entire part in self skinning foam eg Polystyrene for best floatation.
2. Spherical depression on bottom face to cradle seed better.
3. Small lug features round rim to take rubber bands used to hold sprouting seed in place as it grows.
Mar 21, 2017 10:01
Pontoon seed starter boat.
Mar 19, 2017 18:43
#3 Floating Seed Sprouter V1 by N-Design
Mar 20, 2017 2:43
#4 Floating Seed Sprouter by Chamal Jayasinghe
Floating Seed Sprouter , Please give me more details to update if necessary.
Mar 20, 2017 7:53
#5 Sprouter de semente flutuante AD01 by Adriano Ordoz Barissa
Plastic part injected with float in EPS.
Mar 20, 2017 9:21
#6 Float produced by blowing process by Adriano Ordoz Barissa
Based on the product description, I believe this may be the best solution.
  Based on the manufacturing cost of the molds, this part needs to be of considerable consumption.
Let me know your opinion and if you need something other than that, would you like to sketch your idea?
Mar 20, 2017 12:03
#7 Floating Seed Sprouter by Adam B.
A 2-15/32" X 1" deep seed sprouter.
Mar 20, 2017 16:12
#8 Sprouter and Seed Assembly by Devondesigner
Moulded plastic floating sprouter body with self skinning foam injected under rim to give buoyancy.
The seed is held in place to prevent tipping over, by three moulded arms on living hinges as part of the sprouter body. These features are in place of the adjustable telescopic posts you describe. This should be easier to produce, as well as being a lot cheaper.
If you have any questions please get in touch.
Mar 20, 2017 16:16
#9 Floating Seed Sprouter by kabbo
sir, here i have attached my design which is very easy to produce and aesthetically sound too.there were some adjusting pole according to weight of the soil and seed.there i have also done a group of sprouter from a prototype.
thank you sir.
Mar 20, 2017 16:49
This is patentable !
Polypropylene "boat" with peat pellet inside.
1/2 hole on bottom allows peat pellet to wick mositure.
"Noodle" type sponge material surrounds part.
Mar 20, 2017 18:04
#11 Floating Seed Sprouter by kabbo
sir, here i attached my another design which type is just like as the previous one.
thank you.
Mar 20, 2017 18:46
#12 Floating Seed Sprouter by kabbo
new concept and design previous material.easy to produce.
thank you.
Mar 20, 2017 19:16
#13 Floating Seed Sprouter V2 by N-Design
Mar 20, 2017 19:50
#14 Floating Seed Holder by Mike Mansour
Primitive design just to highlight the idea. Changes can be made upon request.
Mar 21, 2017 0:10
#1 Concept by handsketcher
Mar 19, 2017 13:35
#16 Float with drawer type regulation by Adriano Ordoz Barissa
This project consists of two parts, one part made with normal injection process and another one molded to blow.
  The float has slots where we fit the tray in the washable height.
Mar 21, 2017 11:24
#17 Floating Seed Sprouter AD04 by Adriano Ordoz Barissa
Design with good buoyancy mainly targeting a low cost product in the production of injection mold.
Mar 21, 2017 11:43
#18 Floating Seed Sprouter AD05 by Adriano Ordoz Barissa
Thinking outside the box ...
This idea consists of a plastic part injected or 3D printed where they are fixed in the tip styrofoam balls (EPS)
Mar 21, 2017 12:10
#19 Floating Seed Sprouter by Vigneshwaran V
Mar 21, 2017 13:17
#20 Sprouter Dish Complete by Chamal Jayasinghe
More parts were added , the size is corrected , Finalized with all the need full properties , Please inform if updates are necessary.
Mar 21, 2017 14:03
#22 Floating Seed Sprouter AD06 by Adriano Ordoz Barissa
The simplest version possible consisting of a part that can be produced in injected plastic, formed vacuum or 3D printing for prototype.
  In my opinion the model cheaper so far.
Mar 21, 2017 18:15
#23 Floating Seed Sprouter by kabbo
sir, here i have attached my another design which is aesthetically sound and easy to manufacture.
thank you.
Mar 21, 2017 18:34




Tue, 04 Apr 2017 12:28:18 +0000
Looking forward to seeing the winning design!
Fri, 24 Mar 2017 21:44:01 +0000
Hello there Stavro,

You mentioned in your description that the seed size could vary from ~2" to ~0.25", and that you would like the height of the seed support adjustable. I would assume that this is because there is some ideal water level for a seed to sprout (i.e. 1/4 submerged or 1/2 submerged?). Could you provide some info on where you would like the water line to sit? I would like to see if I can make a passive design (i.e. one piece with no moving parts) to accommodate the range of seed sizes and weights.

Also I would suggest that asking for fluid simulations is probably unnecessary. Some static calculations should certainly suffice to show that the design will be stable and support the required weight.




Fri, 24 Mar 2017 17:37:59 +0000
Buyer, can we get some "star" feedback or anything from you regarding our designs?



Thu, 23 Mar 2017 15:18:18 +0000
Submitted! Thanks for the fun contest!



Thu, 23 Mar 2017 03:09:11 +0000
People that don't show their design typically are copying someone elses.
Sun, 19 Mar 2017 19:08:25 +0000
Can you please kindly further describe below

" I envision 3 adjustable, horizontal poles that are attached in the inside walls of the device, that can move vertically up/down, depending on the weight of the seed, and in/out, depending on the size of the seed. "

Similar Contests on Cad Crowd

flower pot
A plywood flowerpot using the capabilities of CNC. Many people enjoy container gardening, but the price and wintertime storage concerns mean they use a pot that is too small. I want a plywood pot that snaps together. 4 sides, a bottom, and a lip around the top. Design should be scaleable from 1 o 15 gallon. I am thinking interlocking edges and wedges to hold on a double thickness lip and bottom. Alternatively, whole thing could be held together with wedges. Open to all ideas. Bottom should be recessed from actual bottom so it can sit on a stand. stand included in design. Construction would be of 1/4 inch luann (doorskin) plywood. Comes in a 4 by 8 foot sheet. Pot would be cut out on a shopbot type machine.
wallet clip for keys/key fob/cash&CC/ headphones
As seen in the sketchup images, this rectangular clip functions as a wallet and clips onto the opening of a front pants pocket (an example is shown in photo's). I need YOUR help in finding an ergonomic & functional solution to securing a car key FOB to the clip as well as sourcing pro CAD files that can be sent to a CNC machining facility.
Replicate Macbook Pro Cover
We are looking for someone to help us replicate a shell case for a MacBook Pro in a CAD format drawing that will function and fit the desired measurements. Our goal is to be able to take this design to a manufacturer for building. This case will include two parts: a top and a bottom. These parts need to be able to be built separately. Please see attached PDF for measurements This design should also be flexible enough to be adjustable so we can fit both the 15” and the 13” models. These models will be first produced in a CNC environment so the file must work within those constraints. The design should not include the bottom leg pads. The case we are looking to replicate is http://www.amazon.com/Speck-Products-SeeThru-Raspberry-SPK-A1498/dp/B00937DOEK We have most of the measurements but a second look would help. Wants: someone who either has a mac or can get their hands on one to see the coverture on the top and bottom case. Something that will actually can be produced. Main focus is on the 15" model case. Extra: additional Money can be earned if also completing the older version of the macbook pro case. also included in the PDF. 2012 version. $50.
Hearing Aid Sport Accessory
Hi I have a small product that I need designed and built in Solidworks (2014). The product is a sports accessory for a hearing aid that is roughly around 35mm x 45 mm in size. The product will be a silicone mould that slips onto the hearing aid and hooks around the ear, similar to how sports headphones have hooks around the ear to stop them falling it out when running. I have a 3D model of the hearing aid that I can provide you with (available in the following formats: .3DS, .OBJ, .WRL) that can be used as a reference. I haven’t worked out precise measurements, which is what I will need the designer to work out. I have a budget of around 160 USD for this particular project and the deadline would be 10th March 17. If it goes well I will also seek additional work, as I need more models creating. I have attached some rough sketches of the concept. Please let me know if you have any questions, Many thanks, Jay
Knee-based Travel Mug Holder - New Product Design / Prototype
Commuters on buses and trains don't have cup holders, and so they are left with the balancing act of holding their travel mug in one hand, while trying read the paper or work on their laptops with their other hand. This sucks, causes spills, and is super uncomfortable. Commuters need something that's compact and foldable that can then open and attach comfortably to their knee (or another body part?) that will securely hold travel mugs of different sizes.