O.S. Bomba: Marble Launching Figure

Inspired by the Bomberman B-Daman's of the 90's: Comes O.S. Bomba!

It's essentially a marble launching figure. Put a marble into the back of its head, press the trigger, and the "hold parts" will yeet the marble out the front!

You can launch marbles (or spherical objects) that are 15.8mm to 17.1mm in size.
(The sweet spot is 16.7mm. I'll upload a 3d printable 16.7mm B-Daball in case you lack marbles 😉)

Design your own face! Just draw it out on a piece of paper (or 3d print it) and slide into the head~

For the best experience, you'll need find an appropriate spring from a pen to use with this toy.
(Without it, you'll need to manually pull the trigger back after every press.)
Included are multiple trigger options that'll let allow for pen springs 19-31mm long.

It has a multitude of spots to add accessories. (ie: Magazines, Barrels, Power Wings, etc.)
I'll make sure to upkeep a printables collection of compatible parts.
Make sure to check it out periodically!

Tested in PETG, but had a few friends try it out in PLA to a decent amount of success.
Make note that the hold parts will wear out/weaken after repeated use; so eventually you'll need to replace it. They're designed to use very little filament and are easy to swap out, so just print out a whole bunch.

Link to Comic:
https://www.reddit.com/r/BDaman/comments/1k2uzlh/official_ipga_promotional_manga_version_1/

Most of what you need to know is in the images, but text instructions will be included below for those who need it.

3D Print Instructions:
there are two .3MF's included in case you are feeling lazy.

• One .3mf for Bambu studio + p1p printer + PETG,

• One .3mf for Snapmaker Orca + Snapmaker U1 printer + PETG

Else, you should probably use the STL files and manually configure the settings.

• Enable supports/skirts/brims when necessary (each part will have files notes in the "Files" tab)

• Follow the files notes for the hold parts! It needs to flex often, so it needs to printed correctly!

• Don't use Tree supports, use "normal" supports

• Do not use "Classic" wall generator, use "Arachne" instead. (Should be in the Quality tab)

• STL's should already be in optimal orientation

2D Print (Face) Instructions:
You can also print the face out on a piece of paper.
(Else cut a piece of paper to 0.55in x 1.04in / 13.9mm x 26.4mm and draw on it)
The faces are supplied as a PNG image @ 600 pixels per inch. 
(If this website edited the meta data of the image, use the .zip file for the same images)

So long as you print out a PNG image at "actual scale"/ "100% scale" (or equivalent) & your printer has proper drivers; the image should print out at the correct size.

• Microsoft paint used to be able to print out images at correct scale. stopped working a bit after they added copilot.... (When it did work. File > Print > Page setup > Set Scaling to "Adjust to: 100% normal size")

• IrfanView: Files>Print and make sure "Print size" is set to "Original size (from image DPI)"

• Adobe Indesign: In the print menu, make sure the scale setting for horizontal and vertical are both set to 100%

Assembly Instructions: 
Make sure all support material is removed before assembly. (Especially from the head/Neck area.)
If the Head Lower + Upper are not able to be fully inserted onto the body, you will not be able to install the "Head Key" to lock everything into place! I recommend running the "Head Key" through all the relevant holes before assembling to loosen it up. It'll make make assembly a lot easier.

1. First install the Hands and Feet onto a body of your choice.

2. Insert the spring(optional) and trigger through the front of the body into its designated slot.

3. Insert the "Hold parts" through the front of the body until it clicks into its designated slot.

4. Slide the "Head Lower" onto the head of the base unit and make sure it's pushed all the way in!

5. You can now slide in the face of your choice. (optional)

6. Install the antenna onto the "Head Upper", then you can slide it into the rails of the "Head Lower"

7. Now you can install the "Head key" to secure all the Head parts together.

8. Done! Play with your Bomba!

ALT PARTS + STP Notes:
If the Antenna fits too loosely on the "Head Upper", you can try the "(Tight)" version to see if it fits better.

If the standard hands are too tight, you can try the "(Loose)" version to see if that fits better.

If your pen spring is longer than the recommended(19-24mm), you can try the "(Pen)" variant.
I recommend pairing this with the trigger guard

Trigger guard: slides onto the trigger to make the area that you press a bit wider/more ergonomic. It also helps keep the spring from buckling outwards and jamming up the assembly.

Head Upper Mag ALT: This version of the "Head upper" removes the antenna and makes space for the installation of a B-daman Plug-in magazine.

STP Parts are not oriented in optimal orientation for printing. STP Parts were Exported from Rhino3d and might have some errors. Hopefully it's easier to modify than STL files!