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Dec 2015

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 ?

  • created

    Dec '15
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    Dec '15
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This is really cool… I am going to try printing this tonight!

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

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

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.

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.

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