Enlarged Exhaust Ports For Voron Stealthburner Phaetus Dragon Printhead

I recently switched to Voron Stealthburner toolhead from Voron Afterburner. After that switch, I started to experience clogs and I assumed the clogs were a result of insufficient cooling of the Dragon hotend.

Despite using a fan that matches/exceeds required cfm/air pressure specs, I noticed fan intake had a fair bit of backpressure and puking air out of intake.

I'm aware that Stealthburner toolhead designed with extended CFD models in mind, but I wanted to see if enlarged hotend cooling exhaust ports would reduce the backpressure and improve the airflow, hence, cooling of the hotend.

I then modified the back part of Phaetus Dragon printhead's exhaust ports, respecting the existing geometry to preserve upward-shooting air exhaust. With this modification, I now have noticeably less backpressure and more airflow out of both exhausts.

Now, I don't have any data other than my own observations and they are not tangible. I'm no longer having clogs midway through ABS prints I had, but this isn't the only thing I modified to eliminate my problem. I don't think this modification hurts anything, but can't firmly argue it's helping. All I can say, I have much less backpressure and much more airflow from the exhaust ports.

I want to thank badnoob, wilecoyote and every single member who contributed the design process of Stealthburner toolhead and to Voron team for graciously sharing it.

P.S.: This is only for CW2 compatible back part.