40mm fan redirect vent Replicator 2 Stepstruder Mk8
by Gozeeta, published
The difference in airflow is noticeable, though I haven't printed as much since that replacement. Research on whether or not my thing is detrimental to the fan long-term has not been done. Y'all should try both and see which you like.
My larger prints were lifting from the platform because the fan from the stepstruder was blowing cool air off the metal frame and onto the build platform, cooling the PLA more than needed. This vent forces the exhaust upwards and minimizes that effect. At 5mm it's the same thickness as the existing chrome grill and a replacement for it. The .stl and .sldprt has a blank face but I added a P for style pointz.
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I think it probably is. You've blocked the air flow in either direction. I made sure my fans were drawing air through the heat sink away from my print heads and then designed the ducts in the link here http://www.thingiverse.com/thi...
Check em out....they work great and I still have plenty of air flow. Been using them for a couple weeks now. Much better prints!
Is that necessarily bad? I can understand that if it had to draw air THROUGH the vent it's undesirable. It's as if no matter what direction the air moves (besides up) it's no good. So now to find the best way to move the air up...
Thanks for the input!
Not trying to sound demeaning or anything but...this has to block at least 95% of the air flow from the fan. I'm not sure anyone should be using this. I do like your concept though. I too have noticed that turning the fans around and making them pull heat away from the heat sink dramatically improved my prints. It keeps air from swirling around the print head and prematurely cooling the extruded plastic. This lead me to try and vent as much air as I could out of the machine. I've made my own fan ducts to blow the air straight up and out of the print area. I'll have to post them. They just press on over the fan body. They have a much larger opening for air flow.
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Medium slicer with support enabled
20% infill, 2 shells
.25mm layer thickness
default temps and speeds
placed in the back right corner (warmest part of the build plate)
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