Wago 221 PEZ Style Dispenser

This is a Wago 221 three conductor lever nut dispenser similar to the famous candy PEZ.  This dispenser has several features.

• The side grips on the body function as a secondary 11mm strip length gauge. 
• The numbers on the front of the body indicate how many lever nuts are left.
• The inner sleeve will lock in either the fully up or down position. 
• The head of the dispenser denotes a “3” to indicate the 221 type being dispensed.   
• The head as the wire size rating for that lever nut.
• The head can still close when the lever nut has been pushed forward
• The head as thumb grips to prevent slipping during dispensing

During the designing process I originally tried various 3D printed springs but they did not last and greatly reduced the number of lever nuts that could be stored.  So instead I designed a 3D printed spring making jig.  This jig will create a spring using 0.20in or 0.51mm music/piano wire approx. 15.375in or 390mm long.  Full disclosure the idea came from looking at @Froy192_244831 Cat Spring Toy Maker.

Print Settings

The Spring Making jig does not need supports but the handle is in two pieces with five alignment pins that need to be glued together.  It was printed with 0.20 Structural settings in PrusaSlicer.

The Wago PEZ Dispenser files were printed at 0.15 Structural settings in PrusaSlicer with no support generation needed.  However, the file named “Wago Holder Final” has supports built-in.  

Spring Making Jig

When using the spring jig wear safety glasses and gloves.  There is a little bit of technique to making the spring.  A slight downward pressure while turning is needed.   This will help the wire follow the grove in the spring dies. 

1.  Insert the pre-cut wire into the hole in the bottom of the handle and insert it into the cutout of the “Die Holder”.  The pre-cut wire should be approx. 15.375in or 390mm long.
2. Turn the handle until it bottoms out on top of the jig and any remaining wire can be cut off using diagonal cutters.  NOTE: Once the the spring starts to protrude from the bottom of the jig it will want to force the handle in the opposite direction.  
3. The spring dies and handle can now be removed together and the spring can be extracted.  NOTE: The spring dies will naturally be pushed apart once its out of the “Die Holder”.  
4. The spring will be longer than needed.  So, trim it down to approximately the height of the “Wago Holder” or 92mm.
5. NOTE: It did take a few attempts to get the technique down.  However, I was able to make a functional spring on the first try.  

Assembly

Warning: Wear safety glasses when working with springs.  Every spring has a magical property of shooting directly toward your eye.

The "Wago Holder Final" has two built-in supports and a brim that needs to be removed.  These are highlighted in red in the photo.  Make sure all the brim material is removed because it will stop the “Wago Head” from springing back.  

1. Insert the “Wago Holder” into the “Wago Body” and verify it can move and lock in the lower and upper position.  Once verified, remove the “Wago Holder” for the next step.
2. Insert the spring into the “Wago Holder” making sure the bottom of the spring is captured in the slot and the top of the spring is captured in the “Wago Plate”.  At this point the spring will try to jump out of the “Wago Holder”.  
3. Insert the “Wago Holder” with the spring into the “Wago Body” and then angle the “Wago Plate”  into the assembly.  Note: the plate is directional and the large side with the simi-circle goes towards the back.  The Plate should lock into place and capture the spring and “Wago Plate”.  Once the plate is angled into the “Wago Body” pulling up on the “Wago Holder” can help force it into position.  
4. Finally, attached the “Wago Head” to the “Wago Holder”.  The Wago Dispenser should now be ready to receive the lever nuts.  I found the operation is smoother when the lever nuts are inserted lever side in.  However, they can be loaded in any horizontal orientation.

Materials

• Piano/Music Wire - https://ksmetals.com/products/mw36-020
• Polymaker PETG Silver
• Prusament PETG Orange
• Eryone Matte PLA Rainbow, for the Spring Jig