Mould for Spherical Hollow Ice Ball

in Consumer Products held by Topi
Contest Ended, Winner(s) have been selected.
Description:
I would like to design a plastic/silicone mould that forms an ice ball once placed inside the freezer that is 3D printable.
The ice mould needs to make a hollow ice ball. Design is variable, it can be a two piece mould that attaches two half spheres together or a single one. Creativity is key. No need for fancy renderings.

Hollow ice balls can be seen in this link:

www.molecularrecipes.com/molecular-mixology-class/cocktail-ice-sphere/

i.imgur.com/zKj5qlT.gifv

www.youtube.com/watch
Wants:
- Hollowness of Ice ball
- Simplicity to 3D print
- Practicality - does it actually work?
Don't Wants:
- Silicone based design unless absolutely necessary
- Difficult to 3D print
- Doesn't produce a hollow ice ball.
Software:
  1. ANY Software

Entries

1st Winner
#30 Mould for Spherical Hollow Ice Ball by Ivan Zerpa
on instructions from the buyer Topi I uploaded the files again
more
2016-04-23 15:14:51
#5 Very Soft Rubber Mold by ScottMacK
This crazy design could actually be produced, the question remains whether it should..
more
2016-02-11 17:38:09
#14 Self Inflating Ice Sphere Mold by HRA
3 Piece Plastic Mold that uses the physical properties of Brine or Saline Solutions to inflate and empty a balloon inside a plastic mold inorder to shape the cavity inside the ice ball, the brine is confined in a compartment and flows to the balloon by turning the Mold upside down using gravity, while the pure water freezes around the balloon forming the Ice Sphere.
more
2016-02-17 15:53:24
Hello Topi.
I've attached the design of the item.
Please read carefully the following implications.
During the creation of the ice ball there are several problems:
1. How i obtain the inner hole of the sphere and
2. How to get the ice sphere outside the mold. So I propose you the following. There are 3 molds that makes the ice sphere (2 molds that shape the outside of the ball and one sphere that makes the inner hole.
First step: Is to option 2 hemisphere but between the 2 outer molds (in the separating area of the ice ball, we will insert a gasket.
After we optian the 2 hemisphere, we will take off the inner spherical mold that makes the inner shape of the ball and also we will take off the gasket.
We assemble the molds along without the gasket and this area will be filled with water that freezes and "weld the 2 hemispheres together and we will obtain a single sphere with hollow volume inside.
Hope I've made myself clear, please submit your interest if you may need further explications over the design so I can build a full technical report over the design.
Thank you and looking forward,
Liviu Barbu
ProtoTech Workbench Team
more
2016-03-21 14:25:27
#25 frostaR by Albertus Putra
the idea is to shrink the silicone rubber ball automatically when the pressure inside the ball is lower than outside,
it will produce an interesting shape of ice ball, with crystal-like pattern inside
more
2016-04-11 21:15:15
#6 balloon inflation approach by Jeremy Benjamin
This is a rough idea - I can't say with confidence that this model - in its current state - would work, but if you think that the concept here is worth pursuing, perhaps with some experimentation and revision this might potentially achieve the goal. The basic idea here is that a balloon is inserted through a tube into the spherical mould, and once the balloon is inflated, its shape is held by a thin metal net that will hold a somewhat consistent spherical surface pushing against the pre-measured volume of water to define the inside of the hollow ice ball.
more
2016-02-12 10:49:36
#8 Sphere Ice ball by DEEPOO
2016-02-12 12:10:06
#9 Custom Inflatable Inner Mold by ScottMacK
2016-02-12 16:35:00
#10 Thermochromism Ice mold by JudahRichardson
3d printable clear mold with Thermochromism stick to indicate when ice is at or below freezing temperature.
more
2016-02-13 02:45:08
#11 "Easy Use" Ice Cube Spherical Ball Tray Molds by Decker
Soft insert in mold cavity for easy removal of sphere. Easy funnel style fill top.
more
2016-02-16 01:32:15
#12 ICE MOLD by Adam
2016-02-16 17:34:04
#21 Hollow_ice by ltpdezign
Very simple to print, works!
more
2016-03-24 04:02:49
#7 spherical ice mold by Npateno
two mold freeze together after dip ice edge in water. Then close and freeze again just see image for further illustration
more
2016-02-12 11:37:51
#16 spherical hollow ice ball by dani alfiani
mould for half ice ball,
more
2016-03-19 23:11:31
#15 Perfect round ice ball mold by I0NX 3D
Here's my design !
We can discuss about size and finitions if you like.
Hope you like
more
2016-03-17 23:51:26
#18 Hollow Ice Sphere by cetienne1116
See PDF and JPG of models. All designs created in solidworks version 2014.
more
2016-03-21 16:17:55
#29 frostaL by Albertus Putra
the buyer wants me to revise my design, and upload it here
the new design use plastic screw for scissor-jack mechanism,
the silicone rubber and its seal will be expanded and pulled up when we rotate the plastic screw
more
2016-04-21 22:59:00
#1 Sphere mold_assembly by Waks
Spherical hallow ice ball mold. Material: ABS plastic to enable 3D printing.
more
2016-02-10 20:30:03
#2 2 Chamber Ice Mold by ScottMacK
I know this isn't what you asked for but when I saw that neat ice trick I thought of something much easier to make which gives a very similar effect. This simple 2 chamber mold holds 2 different liquids side by side until it is broken with a hammer and everything is mixed. This mold is very simple in that the removal of the frozen ice casting is done by gently unscrewing the mold from the casting.
more
2016-02-10 20:49:12
#3 Poire Moule by REDA
;)
more
2016-02-11 12:20:51
#4 Moule Poire by REDA
;)
more
2016-02-11 12:24:54
#22 Hollow_ice by ltpdezign
Very simple to print, works!
more
2016-03-24 04:03:22
#23 ice-ball by Albertus Putra
more concepts to go
more
2016-03-31 23:28:55
#24 frostaR - overview by Albertus Putra
the mold will produce hollow ice ball with outer diameter = 45mm and inner diameter around 39 mm
more
2016-04-11 21:07:19
#26 Mould for spherical hollow ice bal by Ivan Zerpa
1. Place water in the base plates
2. close the base plates with the caps
3. Place the containers in the freezer
4. remove the covers of the base plates
5. Place a small amount of water in the slot cap contained in the base plate
6. Place the icecap1 over the icecap2
7. Place the base plate 2 on the base plate 1 and close .
8. freeze again
9. remove the ball of the base plates
more
2016-04-12 04:35:08
#27 mould for spherical hollow ice ball by Ivan Zerpa
1. Place water in the base plates
2. close the base plates with the caps
3. Place the containers in the freezer
4. remove the covers of the base plates
5. Place a small amount of water in the slot cap contained in the base plate
6. Place the icecap1 over the icecap2
7. Place the base plate 2 on the base plate 1 and close .
8. freeze again
9. remove the ball of the base plates
The ring can de the rubber o silicone
more
2016-04-12 04:56:19
#28 Mould for spherical hollow ice ball images by Ivan Zerpa
Images of my design the mould ice ball
more
2016-04-12 05:10:19

Discussion

Showing last 20 comments - View All

Topi

Buyer

Wed, 20 Apr 2016 09:57:52 +0000
Hi Adam,
I'm still in the process of choosing. It's difficult cause there are so many good designs. However I do apologise about the wait, I understand the eagerness!
All the best

Adam

Designer

Tue, 19 Apr 2016 02:16:34 +0000
Who won this contest ?

Topi

Buyer

Fri, 01 Apr 2016 08:58:36 +0000
Rayeed,
Thanks for your hindsight however I've had 5 total projects, 3 of them have been paid in full. 2 of them had no entry designs, thus no one to pay to. Hope this is self-explanatory.

Regards
Tue, 29 Mar 2016 23:49:56 +0000
Buyer has had 4 contest with only one for pay out.
Wed, 23 Mar 2016 22:59:31 +0000
Buyer's Rating=*****
why ? I am not sure cad-crowd ..

Adam

Designer

Sun, 20 Mar 2016 00:04:17 +0000
Topi,

I have great respect for the fact that you are considerate to other designers who can't make the deadline. By the way, 30 days is plenty of time.
However, you are inconsiderate to people who submitted to your contest on time by doing this. Part of winning contests on this community is meeting the deadline..
Are they extending soccer games in the UK when a player says he hasn't had enough time to get in the game ? I didn't win your contest, but I see that others have given a big effort to $100 payment pending, and you should be fair to them. Anyway, it's your contest not mine. I'm just barking.

Topi

Buyer

Fri, 18 Mar 2016 01:57:17 +0000
Hi Adam,
Thanks for your input into this project. I understand the costs of running a project like this in the United Kingdom. Similarly, a project like this would cost a lot more respective to a lot of countries (US, France, Germany, Canada etc). However, as noted in the title, this is a competition. I'm not forcing anyone to take part in it nor am I unappreciative of anyone who willingly wants to take part in this competition. As mentioned in my previous comments, I wholeheartedly look forward to a design solution or idea to the task I posed. 3 designers messaged me asking to extend the competition because they didn't have enough time to submit a draft. As a socially and morally responsible individual, I feel compelled to allow them to take part and have a say. I hope this hasn't caused any inconvenience to the hardworking designers who have submitted/developed designs for this project.

Regards

Adam

Designer

Sun, 13 Mar 2016 01:12:58 +0000
You're kidding right ?

You've extended a contest for payment pending $100 for another 30 days ? Do you know how much this would cost you at a design firm in the UK ?

Topi

Buyer

Fri, 11 Mar 2016 09:28:20 +0000
Guys,
I've extended the project because some designers emailed me asking for an extension. If you guys were waiting on a result I regret to inform you that it will take slightly longer. However, as this is the last extension possible hope to see more creative ideas!

Regards

Topi

Buyer

Mon, 22 Feb 2016 16:23:17 +0000
Hi Manuel Rosso,
Even though I think ScottMacK's idea is a good one, the mechanical complexity of it makes it difficult to make/use. I would say it would not be worth the money.
One brilliant idea revolves around a ball which similarly expands like an umbrella when pushed down and compresses when pulled. One such example could be: http://lightingballoons.com/products/53/umbrella-ball/

Thanks guys!
Fri, 19 Feb 2016 20:05:03 +0000
The inner balloon may work, and it will leave a rather big hole open, for the removal of the balloon.
To have a complete sphere I may explore the concept of ScottMacK.
There are step-by-step motors prepared for -40 C and they could be easily driven from outside the fridge and using a cable for power in. The molds (I see doing many spheres at once) will run at 100 rpm or so, for the liquid to wet the cold wall of the mold and forming crystals against it.
It is critical to change the direction of rotation continuously, for instance with an alteration of the axis of rotation, as to wet uniformly the mold.
The gadget will not be very cheap to make, I expect something in the range of hundreds of dollars. Is it worth the money?

Topi

Buyer

Fri, 19 Feb 2016 16:41:57 +0000
Hi guys,
Awesome designs and I've noticed many of you have brought up the idea of balloons. Balloons are fantastic however their structural rigidity is compromised during the freezing process. If maybe there would be a way to hold the balloon intact without losing its shape such as an umbrella type axis which holds the balloon structure rigid without any shrivelling. Using liquid or oil to fill up the balloon is very tedious and could lead to potential problems with leakage/hygiene/storage etc.

HRA

Designer

Thu, 18 Feb 2016 08:00:53 +0000
I agree with J.Osechas on the shrinkage problem, I believe that the balloon shouldn't be empty, I think that we need a liquid with low freezing point to get rid of the shrinkage probleme , ie. Brine
Sun, 14 Feb 2016 20:29:21 +0000
The inflatable balloon idea seems the most plausible, but something just came to mind. Wouldn't the low temperatures compress the balloon? Mainly since water expands while freezing, while the balloon's volume will shrink since it's filled with air...it just seems to me that it's what will probably happen.

Albertus Putra

Designer

Sun, 14 Feb 2016 06:49:31 +0000
I'm totally agree with the ideas of inflating balloon/ silicone inside the mold,
I think we will end up using 2 partial molds to make it easy for releasing the ica ball

Topi

Buyer

Thu, 11 Feb 2016 00:07:19 +0000
Millerro: Your idea sounds very interesting and sounds innovative! However, I'm just thinking of the seam that will be present after both halves have been fused together. This halfway line might create structural weak spots and might make it visually unpleasant.

ScottMacK: I like your innovation to this project. I'm more interested in simplicity and introducing a motor would make the mould difficult to 3D print and build. I'm also curious to the fact how fast the motor might have to spin to actually create a perfect sphere inside freezing condition. Any thoughts?
Wed, 10 Feb 2016 23:38:58 +0000
Would a two piece mold be acceptable? Creating an inner lip on one half (of the ice ball) that would fit inside the other half (of the ice ball) and once frozen, dip the edge in water. Then put the halves together and freeze? The seam would surely be visible but not a big deal if the ice has to be broken for the drink.

ScottMacK

Designer

Wed, 10 Feb 2016 20:53:08 +0000
One way I can think of is to put a small amount of water into a spherical mold which has a small battery powered motor that slowly and steadily spins the mold. A complicated mold like that can make the process much easier for the end user.

Topi

Buyer

Wed, 10 Feb 2016 16:13:11 +0000
Hi guys,
Thanks for taking an interest in this project. The dimensions of the hollow ice ball should be roughly 4.5cm diameter.
Mouathel, I am trying to make a mould which would make it easier for me to make hollow ice balls because the current method is quite tedious. I created this project to see if any CadCrowd members could tap their creativity and maybe design something feasible. There are ways around this, just wanted to see what you guys come up with first.
I am a recurrent CadCrowd customer and always honour my payments. The reason I haven't pre-paid this project yet is because I want to make sure this idea is actually possible before implementing it. If a preliminary design looks good I will ensure the pre-payment is made before any further work is done.

REDA

Designer

Wed, 10 Feb 2016 08:04:02 +0000
Topi ..lol

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