Bi-Directional 40mm-50mm Fan Adapter

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Published on November 28, 2012

Description

These two sizes are confused frequently enough that it warrants an adapter. I think it's because the 50mm fans have 40mm mounting hole spacing.

Instructions

I don't have a 40mm fan here at the moment, so I'm not 100% sure about the hole spacing, but I took measurements off of a printed part made for 40mm fans, so it should be very close. Please comment if you find it does not match, and I will make the corrections.
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It would be a perfect solution to the problem I'm having, if it could match a 120mm fan. (I just needed an outter case-buffer to set my fan on an open vent). I could not get your .stl file to open in sketchup or OpenSCAD, do you have the .SCAD file or a 120mm version? :)

Give me the two sizes you want to mate, and I'll post it here, and include a format you can edit, if that is possible. 120mm Fant to ?

Where do the heads of the bolts (or the nuts on the other end) fit?

 Thread screws directly into the holes from both sides.