Flashforge extruder cooling duct
thingiverse
Remixed from http://www.thingiverse.com/thing:327387, some key components were elongated to meet my specific requirements. Initially, I trimmed a minimal amount off the tray to achieve a seamless alignment with surrounding parts. EDIT: Clarification: During assembly, the tray that fits under the fan necessitated trimming of two or three layers so the shroud could securely engage with the fan. Perhaps trezhunter's original part would have functioned perfectly as-designed if I had attempted an adjustment; your mileage may vary.
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