This model is for a replacement component for the spool mount assembly that ships in the Elegoo Centauri Carbon - the piece that sits inside the printer. 

In my case, I am using a Creality filament dryer to house filament that I am printing with. Due to some allergies, I invested in two Elegoo Mini Air Purifiers that I added inside of the printer with the “Elegoo Air Purifier HEPA Filter Attachment” model by @JasonLinderm_3642551 on Printables.com:

• https://www.printables.com/model/1431414-elegoo-air-purifier-hepa-filter-attachment

My thought was to add these to the inside of the printer in place of a DIY Bento box because the pair of these filters was on sale for under $20 USD at the time. Placing them inside the printer would help clean the air at the source in addition to the other air purification I have in place in my workshop. 

Given I wasn’t using the filament spool mount and these Elegoo Mini Air Purifiers are rechargeable but also run when connected to power via USB, I decided to use the opening covered by the spool mount to pass USB cables through to my Mini Air Purifiers. 

When designing this, I opted to keep the form factor as close to the Elegoo part I was replacing as I reasonably could. I added a hole in the middle of my model to pass whatever type of cables you might want to pass through it. My use case is two USB cables. Others might do something similar but also want to use it to mount a better webcam inside the printer. 

I am not including a plug in this. Instead I would encourage users who make a plug to share it with the community so that others with similar needs can benefit.