afterburner magnetic hotend fan mount by arkeet (#238)

printer_mods/README.md

@@ -34,6 +34,7 @@ like so:
 ||[cable tie DIN mount](./aeresov/cable_tie_DIN_mount)|A bracket for cable ties to route cables across DIN rails.|:x:|:grey_question:|:heavy_check_mark:|
 |albert|[IKEA Dioder Led Mount](./albert/IKEA_Dioder_Led_Mount)|A mount for the IKEA Dioder LED strip | :grey_question: | :grey_question: | :heavy_check_mark: |:x:|
 |arkeet|[Dial test indicator mount](./arkeet/dti-mount)|A toolhead mount for a dial test indicator, where the tip is located at the nozzle. |:x:|:heavy_check_mark:|:heavy_check_mark:|:x:|
+| |[Magnetic hotend fan cover](./arkeet/magnet-fan-cover)|A replacement hotend fan cover, held with magnets instead of screws. |:x:|:heavy_check_mark:|:heavy_check_mark:|:heavy_check_mark:|
 |claytono|[Voron 2.4 Extrusion Jig](./claytono/2.4-extrusion-jig)|A jig help align extrusions to get a properly square frame |:x:|:x:|:heavy_check_mark:|:x:|
 |Badnoob |[Precision AB Drive](./Badnoob/Precision_AB_Drive)|Changes the gearing for the AB drives to improve both resolution and torque, with a strenthened frame. |:grey_question:|:grey_question:|:heavy_check_mark:|:x:|
 | |[Rail Alignment](./Badnoob/Rail_Alignment)|Tools and procedure to properly align the rails in 2.4 and Afterburner|:x:|:x:|:heavy_check_mark:|:x:|

printer_mods/arkeet/magnet-fan-cover/README.md

@@ -0,0 +1,31 @@
+Magnetic hotend fan cover for Afterburner
+=========================================
+
+This replaces the screw-mounted hotend fan cover with one that is held
+by magnets, for a clean front face and easier access to the toolhead. Works
+with an unmodified toolhead.
+
+Inspired by ModCables101's magnet mod.
+
+Required hardware
+-----------------
+
+- 6x3mm round magnet (2x)
+- M3x8 SHCS — steel, not stainless (2x)
+
+Instructions
+------------
+
+Press the magnets into the new cover. Screw the M3x8 screws into the toolhead
+until they bottom out; the heads should protrude 4mm from the surface.
+
+![Section view](images/section.png)
+
+Images
+------
+
+![Photo](images/photo.jpg|width=)
+
+![Render](images/render1.png)
+
+![Render (open position)](images/render2.png)