Did this in free cad cus im broke :).
tight fit at first. slowly tighten further and further till the plastic bottle meets the O-ring. go back and forth if its too tight. this will soften the plastic to move on further.
anyway this is just the first air tight prototype have fun!

2_Liter_Soda/Pop_Bottle_Adapter_Template_V3_By_Azriel.stl

Did this in free cad cus im broke :).
tight fit at first. slowly tighten further and further till the plastic bottle meets the O-ring. go back and forth if its too tight. this will soften the plastic to move on further.
any this is just the first air tight prototype have fun!

Soda_Bottle_Adapter-Body_V3_By_Azriel.stl

I have a Makeblock mega pi and I'm developing a 3d printed case for it with a fan attachment. this is a stepping stone and may  be helpful for others. :)

source cad
https://grabcad.com/library/data-of-makeblock-parts-1

:)

mega pi PCB OUTLINE.stl

I have a Makeblock mega pi and I'm developing a 3d printed case for it with a fan attachment. this is a stepping stone and may  be helpful for others. :)

Have vive pro and the battery connector slowly died out on me so after  eventually getting another battery (VRURC t2055) that was a bit bigger than the original with more capacity. I set out on a mission to somewhat recreate the vive battery waist holder thingy so this is basically that but for a bigger battery. 

[ASSEMBLY]_(nuts not required, bolts recomended)
use 2x 2.5m screws and nuts to hold plastic retainers in to hold the battery in. pause the print at layer 596 (easiest to do in slicer software) AFTER YOU HAVE CORRECTLY PAUSED IT... insert hex nuts in the holes at the side. i used a soldering iron at its lowest setting (210C) to snugly ensure the went in smooth and straight and tight. unpause printer and allow it to print over top. add the bolts later. 

USE SUPPORTS 4 [MAIN PEICE]
 make sure to remove them from the nut pockets. ensure generous supporting inside back connector

[BACKPLATE]
print on side
(lines will go up/down. this ensures strength/flexibility)
Be sure to sand down the back plate before inserting into the main holder (THEY ARE VERY SNUG) dont rip layers apart :)
..snug but not too snug, trust me

SUPERGLUE HIGHLY RECOMENDED
but not required.


 It works for me at least. Have fun.. Play On..
:)

VR battery holder [!UPDATED!]

Have vive pro and the battery connector slowly died out on me so after  eventually getting another battery (VRULC t2055) that was 20,000mah (bit bigger than the original) i Was set out on a journey to somewhat recreate the vive battery waist holder thingy so this is basically that but for a bigger battery. use 2x 2.5m screws and nuts to hold plastic retainters in to hold the battery in. pause the print at layer 596 (easiest to do in slicer software) [test it at the 2nd layer hieght just in case]   AFTER YOU HAVE CORRECTLY PAUSED IT... insert hex nuts in the holes at the side. i used a soldering iron at its lowest setting (210C) to snugly ensure the went in smooth and straight and tight. unpause printer and allow it to print over top. add the bolts later. the back clip is somewhat fragile (hasnt broke yet after a few drops [PLA] )and make sure it is properly supported when printing. if not it will move forward and back and its not gud at all.

:)

VR battery holder.stl

Backplate.stl

does what its designed to do.
make sure it doesnt come off the wall, might redo with under supports for wall

it came off the command strips after a few months

its adhered to a flat surface now instead of a wall... nice for helping organize


manly Hygiene Holder wall mount.stl

does what its designed to do.
make sure it doesnt come off the wall, might redo with under supports for wall

**THEE ONE AND ONLY ROBUST WALL MOUNTED SUNGLASSES HOLDER **_(LOW POLYGON COUNT)_
**FITS 3 SUNGLASSES**
Supports =  yes
printed on its back to the plate


I Printed on ender V2
i also used command strips to adhere to wall

sunglasses holderV2.stl

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2_Liter_Soda/Pop_Bottle_Adapter_Template_V3_By_Azriel.stl

mega pi PCB OUTLINE.stl

VR battery holder [!UPDATED!]

manly Hygiene Holder wall mount.stl

sunglasses holderV2.stl