e3D Revo Hemera XS 5015 fan duct improved
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Optimized to avoid impacts on the bed and other parts, improved hotend visibility, and error correction.
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The original Drax design is truly satisfactory, but it has a number of issues that have been detected through continuous use of the heatsink.
The first problem I encountered is that due to the weight of the Hemera and any configuration you have on your carriage, it's very easy for the front of the heatsink to hit the bed or the print if the fit with the hotend is too precise. Keeping the front part raised prevents this problem. This was the main reason I made the remix, and as I edited it, I came up with improvements.
The second improvement is to enable a small front arch to improve visibility of the hotend at all times. This way, you can better see the progress of the print. This is essential to ensure that the print hasn't been ruined or there are other problems at all times.
I noticed that the mast where it joins the Hemera had a sharp and poorly joined joint with the blower, making it very fragile. This modification allows for a better connection between the parts.
The gap where the 5015 fan fits was a very tight fit. I've made this area slightly narrower, not too tight, so the fan now fits better and there are fewer air leaks.
The internal air transmission in the blower has been improved, so it now flows with less turbulence. This step was mandatory when creating the bridge at the bottom.
The original Drax blower is capable of delivering an air pressure of 3 m/s at the nozzle, as measured with an anemometer. With my design, this airflow has been maintained despite having partially reduced the cross-section. This is due to the air improvements made.
Printing Instructions:
- The Drax layout is maintained.
- No supports are required. There is a small overhang on one of the initial layers due to the bridge; this is not a problem for proper printer calibration; layer ventilation is sufficient to produce that single overhang line. I have printed several pieces without problems while testing. If you find that you can't print it, add supports.
- It's recommended to use the wall order Interior to Exterior; I don't recommend using Interior/Exterior/Interior.
- Layer at 0.20
- Infill 15-20%