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This is my entry for the Make-Ultimaker Contest. It’s a one-piece print with 18 hinges and a screw mechanism to control the opening of the ornament. There are some cool techniques in this model that I would like to show in detail. I named them: SmartBridge and StencilWall

The egg is a one-piece print with 18 hinges and a screw mechanism to control the opening of the ornament. There are some cool techniques in this model that I would like to show you in detail.

The usage is very simple: Print the egg in one piece, grab a coin and open the egg gently. The first time you open the egg there are 18 SmartBridges that will break (it makes a pretty cool sound, if I say so myself). Then you need to screw your coin clockwise to open it.
The first time it will be a bit rough (don’t worry, it won’t break), but after once having been opened and closed, it will open and close easily.

Print Instructions:

  • This model is printed on a Replicator 2 with standard settings.
  • LayerHeight: 0.2mm.
  • No Raft - No Support.
  • If you use another slicer then you need to make sure that the bottom layer is at 100% or less.

SmartBridge:
I haven’t seen this technique before, that’s why I named it so - hopefully Iam the first one :-). The concept is very simple. To create a horizontal one-piece hinge, I’ve added a small bridge of about 0.4mm right beneath the hinge. Once the hinge is getting moved, the support bridge breaks and the hinge is free to move.
See images for more detail.

StencilWall
A stencilWall is a simple way to add some color to your print. It’s a tight layer around your models with some shape in it. This way it can be sprayed easily. I also created a seam in the wall for easy removal.
See images for more detail.

Unfinished time-lapse

What do you think of it ?

Makey Eggmass 10.jpg
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Makey Eggmass 08.jpg
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Makey Eggmass 02.jpg
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Makey Eggmass Render.jpg
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Impressive work, @LyssensYves, that’s a strong contender! Good luck!

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This is really cool… I am going to try printing this tonight!

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thanks, is it a successful print. its a very tight model so i am unsure if it works on other printers as well

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thanks @Gabriela3d

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Very nice print, bravo, and good luck for the contest @LyssensYves.

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Amazing design ! Good luck for the contest !

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Thanks @victorp

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Thanks @chauvinxavier,

I hope it will be spotted by the jury.

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I printed it!

Very very cool.
Might need to add more strength to the little arms though. I had one break on me… (after I tried to close it oddly)

Looks like one of my platform supports broke too, it fell out of the print when I picked it up off the printer.

Wanhao Duplicator 4 / Simplify3D / Clear PLA / .2mm layer / 20% infill / 6hr print time

Pictures: http://imgur.com/a/0a867

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I tried printing this on an ultimaker 2.

The hinges worked really well, but the rotating part didn’t. It didn’t come loose before breaking.

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I had issues as well… took me like 2 min to get it open the first time… had to turn it slightly… and then turn it back the other way… and do this over and over until it turned all the way… Also its reversed… so you turn to the right to open it… turn to left to close it.

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hi Sybren_Zwetsloo and jatmn, first of all thanks for testing the model. I’ve already modified the model, to prevent other users to have the same problems that you guys had. the turning point on the bottom has more tolerance than before. the first layer on a heated bed is slightly wider than on a printer without. I also added some strength to the joints. I did had the equipment to test it on other machines. so I’m very glad you guys did. The thing that its difficult to open the first time is very normal. the SmartBridges need to break first. This technique was the only way to get a one piece print. thanks again. Best Yves

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Kewl,

Will print v2 tonight and post results tomorrow.

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Love it, awesome mechanism design, good luck!

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Congrats. Very nice project!

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Not sure why… but v2 came out significantly worse for me than v1 on my D4. nearly all of the petals were broken at the hinges before I even unscrewed it.
Course this printer isnt my good printer either…

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HI, @JATMN,

I am not sure why, but will investigate that.

A friend of my is Is also printing V2 at the moment.

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Hi JATMN,

Here are no Issues,

Acualy it looks and feel a bit stronger.

To bad it didn’t work on your printer.

I keep looking for some improvements.

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Must have been an external factor then… I ran the print unattended so I dont know what happen at that point.