3d Touch fan duct thing
by Syntaxcapt, published
I always found that printing certain parts in PLA on the 3d touch can be messy (especially small, high res parts with large over hangs).
I did some test prints and they turned out really good using the increased air flow and having it directed near the nozzle tip.
Even large flat PLA parts came out really well!
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I don't know if mine works any better than yours, but I did notice on some prints with overhangs that the curling up seems to be reduced. I printed them in PLA, and yes, I don't have a heated bed. I might still try adding a clip-on piece to see if deflecting the airflow down a bit helps,
Cool design, I recently tried printing the PLA heart gears and I still get curling at the steep over hang area. I'll definitely give these a try. Did you print them in ABS? I found that if I print my fan ducts in PLA they tend to warp to the heat generated by my heated bed, but it looks like you don't have to worry about that.
I've started a new design, inspired by yours, that snaps in. It's work-in-progress still. I need to design a deflector that snaps onto the open end of the duct (which means I'll need to add snap-on features to the existing duct design), to aim the airflow down toward the bed and the end of the extruders. I don't think making it in two pieces is a drawback when the goal is to make it printable without support and snap-on/snap-together friendly. I wonder if I need the deflector, but I suspect without it the additional airflow higher up on the extruders could cool them unfavorably. My new design attempt is at http://www.thingiverse.com/thi...
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*Edit* Added Fan duct for front right position (I'm sure it can also be move to the left spot too).
Tips on moving the limit switch:
Also a link to a Thiniverse page with a printable mount and explanation
Step 1: Install aftermarket fans. They must be bellow 15mm so as it will fit and not crunch into the build platform.
-Here's an example of the fans I got. I tried to maintain the same specs that were on the stock fans
This link is strange only works if you copy and paste the whole thing :P.
-The fans I got are powerful, main difference is the higher RPM. Which also increases the noise output.
Step 2: Print part... with support (sorry).
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