Maker Greg Zumwalt is back on Instructables with another 3D printed coin bank. His latest creation is the Simple Secret Box II, a fully 3D printed coin bank with a secret locking mechanism. 

[Project] Stash Your Cash in this 3D Printed Secret Coin Bank | All3DP

Despite advances, professional 3D printing may still be the manufacturing industry’s best kept secret, report finds.

Pro 3D Printing: Poised for Growth | All3DP Pro

MIT researchers are using 3D printing technology to explore the secret behind the toughness of conch shells.

Researchers Print Conch Shells To Examine Toughness | All3DP

This 1954 Pininfarina Jaguar XC120 restoration by CMC took 2nd-in-class at Pebble Beach. The secret weapon? 3D printing.

Unique Pininfarina Jaguar XK120 Rejuvenated with 3D Printing | All3DP

The Lawrence Livermore National Laboratory does top secret research into lasers, rocket ships, and 3D printing. Here's a sneaky peek inside.

Take a 360-degree View Inside a Top Secret 3D Printing Lab | All3DP

Secretive tech startup Magic Leap adds $502-million equity investment to its $1.8-billion coffers. Its aim? Industry redefining AR glasses.

Magic Leap Raises $502-Million for Secret AR Visor | All3DP

In a rare glimpse behind the scenes of Apple, it's revealed that several 3D printers play a pivotal role in their "Top-Secret Input Lab".

Apple uses 3D Printers in Test Lab (But Not for the Reasons You Might Think) | All3DP

Formlabs releases a tutorial on how to make metal miniatures from pewter casting molds using the Form 2 3D printer and High Temp Resin.

Formlabs Shares Secret to Making Metal Miniatures With 3D Printing | All3DP

In March, Desktop Metal filed a lawsuit against Markforged for allegedly copying portions of its patented metal 3D printing processes. Last week, a federal jury decided to clear Markforged of both IP infringement allegations, marking a major victory for the defendant. 

Desktop Metal and Markforged Reach Joint Resolution on Trade Secret Litigation | All3DP

<html><head></head><body><h3 class="thing-component-header summary summary">Summary</h3>
<div>Secret box designed to look like a padlock to hide in plain sight. Can print in place with no supports when oriented so the back is flat on the print bed.</div>
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Hidden Compartment Padlock

Secret box designed to look like a padlock to hide in plain sight.  Can print in place with no supports when oriented so the back is flat on the print bed.

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 BULLETZ are really cool Bullet shaped containers with a screw cap. They are easy to print and look best with the bullet (cap) printed in a different colour from the cartridge (container).
BULLETZ are useful as a container for small things and the near seamless joint (when print well and screwed together) make them an ideal hiding place for things... because they look like an ornament / display model. People won&apos;t realize there&apos;s something hidden inside!
The bullet (cap) and cartridge (container) are printed separately. The cartridge is 11.5cm tall making it readily printable on even smaller machines like a MakerBot Mini. When the bullet and cartridge are screwed together the finished product is approx. 16cm tall
The &apos;flat cap&apos; stl file has been added for people wanting a container that just looks like the bullet casing without the pointed bullet as well. This provides a threaded cap for the casing that screws on just the same as the bullet cap.
As long as you have a well set up machine and use a good slicing app you should have no problem printing off BULLETZ. However, please refer to the print settings and instructions as well as view all the images provide.
The .stl&apos;s have been provided separately so you can print them together all in one colour or separately to make your BULLETZ more colourful. They print great in PLA and PET-G. No Support required but Raft is recommended due to the minimal base surface area under the bullet (cap) in particular.
Note: If you like this check out the rest of my fun and practical designs... and please post images of your BULLETZ for others to see.
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BULLETZ

 BULLETZ are really cool Bullet shaped containers with a screw cap. They are easy to print and look best with the bullet (cap) printed in a different colour from the cartridge (container). BULLETZ are useful as a container for small things and the near seamless joint (when print well and screwed together) make them an ideal hiding place for things... because they look like an ornament / display model. People won't realize there's something hidden inside! The bullet (cap) and cartridge (container) are printed separately. The cartridge is 11.5cm tall making it readily printable on even smaller machines like a MakerBot Mini. When the bullet and cartridge are screwed together the finished product is approx. 16cm tall The 'flat cap' stl file has been added for people wanting a container that just looks like the bullet casing without the pointed bullet as well. This provides a threaded cap for the casing that screws on just the same as the bullet cap. As long as you have a well set up machine and use a good slicing app you should have no problem printing off BULLETZ. However, please refer to the print settings and instructions as well as view all the images provide. The .stl's have been provided separately so you can print them together all in one colour or separately to make your BULLETZ more colourful. They print great in PLA and PET-G. No Support required but Raft is recommended due to the minimal base surface area under the bullet (cap) in particular. Note: If you like this check out the rest of my fun and practical designs... and please post images of your BULLETZ for others to see. 

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 The &apos;Apple Flip-top Box&apos; is a must print for every Apple fan...
This is a one piece print of an Apple logo shaped container for small things. The top / lid of the box is hinged so it flips backwards to open.
At standard scale the internal storage area measures approx. 54mm (W) x 51mm (H) x 41mm (D).. It can be scaled up but scaling down is not recommended as it will reduce clearances so moving parts may fuse together. Even at standard scale a small amount of &apos;wriggling&apos; may be required to break the top / bottom free from each other so they move freely.
This is a straight forward PLA print (ABS may be a challenge due to the extreme angles used in a few areas). It should be a straight forward print for machines with a filament fan and good bridging capability.
Wall thicknesses have been kept thin to minimize filament consumption and print time. Raft is optional. Do not use any automated support as it could fuse the hinge and fill the internal storage area. To ensure it is strong use a minimum of 25% infill.
This is a very cool little storage design. Use it your self or as a gift for any Apple fan.
Please refer to the instructions and images for additional information.
Note: If you like this check out the rest of my practical and fun designs.... and post images of your prints! .
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Apple Logo Flip-top Box

 The 'Apple Flip-top Box' is a must print for every Apple fan... This is a one piece print of an Apple logo shaped container for small things. The top / lid of the box is hinged so it flips backwards to open. At standard scale the internal storage area measures approx. 54mm (W) x 51mm (H) x 41mm (D).. It can be scaled up but scaling down is not recommended as it will reduce clearances so moving parts may fuse together. Even at standard scale a small amount of 'wriggling' may be required to break the top / bottom free from each other so they move freely. This is a straight forward PLA print (ABS may be a challenge due to the extreme angles used in a few areas). It should be a straight forward print for machines with a filament fan and good bridging capability. Wall thicknesses have been kept thin to minimize filament consumption and print time. Raft is optional. Do not use any automated support as it could fuse the hinge and fill the internal storage area. To ensure it is strong use a minimum of 25% infill. This is a very cool little storage design. Use it your self or as a gift for any Apple fan. Please refer to the instructions and images for additional information. Note: If you like this check out the rest of my practical and fun designs.... and post images of your prints! . 

We&apos;ve created a &apos;Starter Test Kit&apos; to help tune in your machine before going for the full build. You might want to check your bed adhesion, bridging, retraction and slicing for fine features. &#xA0; Print at ~0.3mm layer height, 2x shells (/perimeters) and 2-5% infill (although should be self-supporting at 0%). Each cracker requires ~34g of material (~4m of 3mm / ~12m of 1.75mm filament). Printed in gorgeous Faberdashery Robot Silver, Pearly White, Space Marine and Mercury Red. &#xA0;&#xA0; The Crackers need to be gently eased off the build plate to save them breaking too early and spoiling the surprise. We suggest carefully removing the finished Cracker with Mole Grips (or equivalent) at the base. &#xA0;For the ultimate festive finish print in two colours, changing filament at 30mm and 70mm layers (Use Z-Pause if your machine supports it). There are three different surprises in each cracker, that all print-in-place. Once you&apos;ve pulled your crackers you can turn the ends around, string them together through the special holes and hang on your tree as a cracker decoration! &#xA0; Faberdashery are releasing daily, seasonal designs for you to print and enjoy. Join in the fun with our 25 Days of Making! <a href="http://www.faberdashery.co.uk/25-days-of-making/" rel="external">http://www.faberdashery.co.uk/25-days-of-making/</a> This is Make #25 of 25. &#xA0; Seasons greetings from everyone at Faberdashery! &#xA0;

Make #25 - Super Secret Cracker

We've created a 'Starter Test Kit' to help tune in your machine before going for the full build. You might want to check your bed adhesion, bridging, retraction and slicing for fine features.  Print at ~0.3mm layer height, 2x shells (/perimeters) and 2-5% infill (although should be self-supporting at 0%). Each cracker requires ~34g of material (~4m of 3mm / ~12m of 1.75mm filament). Printed in gorgeous Faberdashery Robot Silver, Pearly White, Space Marine and Mercury Red.   The Crackers need to be gently eased off the build plate to save them breaking too early and spoiling the surprise. We suggest carefully removing the finished Cracker with Mole Grips (or equivalent) at the base.  For the ultimate festive finish print in two colours, changing filament at 30mm and 70mm layers (Use Z-Pause if your machine supports it). There are three different surprises in each cracker, that all print-in-place. Once you've pulled your crackers you can turn the ends around, string them together through the special holes and hang on your tree as a cracker decoration!  Faberdashery are releasing daily, seasonal designs for you to print and enjoy. Join in the fun with our 25 Days of Making!http://www.faberdashery.co.uk/25-days-of-making/This is Make #25 of 25.  Seasons greetings from everyone at Faberdashery!  


Ancient Ultimaker Obelisk

The scarab beetle is a small model with a secret compartment which is accessed by pulling back a &quot;drawer&quot; and opening up the beetle&apos;s wing case. The box is locked by closing the wing case and pushing the drawer back into place. 
This model is styled after the &quot;Egyptian Revival&quot; of the 19th and early 20th centuries rather than Ancient Egypt. For more information, please this excellent page 
<a href="http://www.metmuseum.org/toah/hd/erev/hd_erev.htm" rel="external">http://www.metmuseum.org/toah/hd/erev/hd_erev.htm</a>. 
It is worth researching this style as it is beautiful and striking. 
To the ancient Egyptians, the scarab beetle was symbolic of the sun (Ra) moving across the sky every day (the beetle rolling a ball of dung was seen to represent this). My model has a stylized beetle with a winged Ra between his two front feet. 

The model consists of 12 parts which must be fitted together. Assembly instructions are here:

<a href="http://www.instructables.com/id/The-Scarab-Beetle-Box-Assembly-Instructions/" rel="external">http://www.instructables.com/id/The-Scarab-Beetle-Box-Assembly-Instructions/</a>

UPDATE: I have uploaded a new version of the drawer file after it was noted that the drawer was too loose and would tend to fall open. The new file has less tolerance and testing so far shows that it stays in place.

Scarab Beetle Box (with secret lock)

The scarab beetle is a small model with a secret compartment which is accessed by pulling back a "drawer" and opening up the beetle's wing case. The box is locked by closing the wing case and pushing the drawer back into place. 
This model is styled after the "Egyptian Revival" of the 19th and early 20th centuries rather than Ancient Egypt. For more information, please this excellent page 
http://www.metmuseum.org/toah/hd/erev/hd_erev.htm. 
It is worth researching this style as it is beautiful and striking. 
To the ancient Egyptians, the scarab beetle was symbolic of the sun (Ra) moving across the sky every day (the beetle rolling a ball of dung was seen to represent this). My model has a stylized beetle with a winged Ra between his two front feet. 

The model consists of 12 parts which must be fitted together. Assembly instructions are here:

http://www.instructables.com/id/The-Scarab-Beetle-Box-Assembly-Instructions/

UPDATE: I have uploaded a new version of the drawer file after it was noted that the drawer was too loose and would tend to fall open. The new file has less tolerance and testing so far shows that it stays in place.


Pseudo Secret Ring Box




Pseudo Secret Ring Box is a decorative (well, the best I could) "secret" ring box with a twist (sorry...). Grasp the top, twist the bottom 180 degrees, and the ring box opens. Keep twisting another 180 degrees, and the ring box closes. Small neodymium magnets in the shell halves assist in aligning and securing the shell halves.

As usual, I probably forgot a file or two or who knows what else, so if you have any questions, please do not hesitate to ask as I do make mistakes in plenty.

Designed using Autodesk Fusion 360, sliced using Cura 2.7.0, and printed in PLA on an Ultimaker 2+ Extended and a dual extrusion Ultimaker 3 Extended.


Hide your spare caps in style! Scan of small spraypaint can, bottom slips off to reveal hidden secret compartment. Print solid, no support needed.

"Spritz" Spraypaint Can with Secret Stash-Spot

Hide your spare caps in style! Scan of small spraypaint can, bottom slips off to reveal hidden secret compartment.  Print solid, no support needed.


Space is not the limit!

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With Crazy Rocket with Wheels and a Secret Compartment play is only limited by imagination.

With a secret compartment to hide the treasures from space, Crazy Rocket with Wheels and a Secret Compartment is a versatile toy: flies like a rocket and runs like a car!

Unscrew the nose and hide the most valuable treasure inside!

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This is the first toy from the space series CACA, Carzy Aeroimagination and Craziness Agency, an adventure through space and beyond.

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Print settings:

&#xA0;

PLA

0,15mm layer height

1mm exterior wall

15% infill

&#xA0;

100% infill for the rims

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No supports needed.

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How to assamble

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Like in the image, glue the windows, tail and tip of the nose.

Fit the rims and wheels.

For the wheels print it in flexible filament, if you don&apos;t have flexible filament there is an extra file named &#x201C;tires_with clearance_Crazy_Rocket_With_Wheels&#x201D; that have an extra clearence (if needed).

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Have fun!

Crazy Rocket with Wheels and a Secret Compartment

Space is not the limit!

 

With Crazy Rocket with Wheels and a Secret Compartment play is only limited by imagination.

With a secret compartment to hide the treasures from space, Crazy Rocket with Wheels and a Secret Compartment is a versatile toy: flies like a rocket and runs like a car!

Unscrew the nose and hide the most valuable treasure inside!

 

This is the first toy from the space series CACA, Carzy Aeroimagination and Craziness Agency, an adventure through space and beyond.

 

Print settings:

 

PLA

0,15mm layer height

1mm exterior wall

15% infill

 

100% infill for the rims

 

No supports needed.

 

 

How to assamble

 

Like in the image, glue the windows, tail and tip of the nose.

Fit the rims and wheels.

For the wheels print it in flexible filament, if you don't have flexible filament there is an extra file named “tires_with clearance_Crazy_Rocket_With_Wheels” that have an extra clearence (if needed).

 

Have fun!


Ring off secret

Do you have stash of money? If you hide in this shelf, no one is finding!

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