Added Removable Electronic Fan printer mod

printer_mods/KRTac/Removable_Electronics_Fan/README.md

@@ -0,0 +1,61 @@
+# Removable Electronics Fan
+
+![Mounted over board with a 120mm fan](images/IMG20231103001214.jpg)
+![Opened fan plate](images/IMG20231103001242.jpg)
+
+I don't use a bottom panel so a standard 120x25mm fan can fit with plenty of
+space bellow it. Use a 120x15mm slim fan if you have a bottom panel, but you'll
+probably need to drill/cut air holes in the panel. The hinge and stay mount to
+the DIN rail using standard Voron PCB clips and the fan plate is removable for
+easy access. Depending on the orientation of the din clips, you can mount the
+fan centered or offset it to the top or bottom.
+
+I tested it with a BTT Manta M8P board. The fan plate clears the standard
+heatsinks mounted on the motor drivers. If you try it with other boards, feel
+free to report back.
+
+![CAD assembly screenshot](images/cad_1.jpg)
+
+## Print settings
+The fan plate is quite thin because of height clearance, but the fan will add
+structure once in place. Use slightly beefier print settings for it.
+
+* nozzle: 0.4 (100% line width, so 0.4)
+* layer height: 0.2 
+* top/bottom layers: at least 5 for the fan plate, 3-4 for the rest
+* walls: at least 4 for the plate, 3-4 for the rest 
+* infill: 40% for the plate, 20% for the rest
+* no supports, they are built in
+* filament: any normal structural material will do
+
+Adjust your settings if needed based on your preferred print setup.
+
+## BOM
+* 6 x M2 10mm self-tapping
+* 4 x M3 6mm BHCS or bigger
+* 1 x M3 12mm BHCS or SHCS or bigger
+* 5 x M3 heat insert
+* 2 x standard printed Voron PCB DIN clip
+* 1 x 120mm fan with 105mm bolt hole spacing (most standard 120 fans)
+
+## Assembly
+One heat insert goes to the front of the fan plate and the rest into the fan
+itself. Keep in mind to double check the direction of the fan. Insert the heat
+inserts into the holes of the blowing side and mount it to the plate using the
+6mm BHCS or bigger. Use two self-tapping M2 screws and thread them into the the
+two fan plate hinge arms from the outside, but keep about 3-4 mm of the screw
+sticking out.
+
+![Example of hinge screw position](images/hinge_screws.jpg)
+
+Now flex the parts and get the ends of the M2's to snap into the intended holes
+on the hinge.
+
+![CAD screenshot of the hinge-plate joint](images/cad_2.jpg)
+
+Use a 12mm (or bigger) M3 BHCS or a SHCS with a shim to fixate the plate to the
+stay. Optionaly you could print out a knob for a M3 screw to hand-tighten the
+assembly. 
+
+Check how you want to position the fan (centered or off-center), orient the DIN
+clips accordingly and use four M2 self tapping screws for the hinge and stay.

printer_mods/README.md

@@ -244,6 +244,7 @@ like so:
 | | [LED Bar Mounts](./Koios/LED_Mounts) | Low profile mount for led bar lights | :x: | :x: | :heavy_check_mark: | :x: |
 | | [V0 C920 Tophat Mount](./Koios/V0_C920_Tophat_Mount) | Mounting bracket for a Logitech C920 on the tophat  | :heavy_check_mark: | :x: | :x: | :x: |
 | Kosh42EFG |[Kirigami bed front](./Kosh42EFG/kirigami_bed_front) |Printed bed front for kirigami folded metal bed mount with Voron logo. |:heavy_check_mark: |:x: |:x: |:x: |:x: |
+| KRTac | [Removable Electronics Fan](./KRTac/Removable_Electronics_Fan) | Removable 120mm electronics fan mount | :x: | :heavy_check_mark: | :heavy_check_mark: | :x: | :heavy_check_mark: |
 | Kruppes |[Belt Tension Meter](./Kruppes/Tension_Meter) | Print in place tension meter to easily tighten multiple belts to the same tension |:heavy_check_mark: |:heavy_check_mark: |:heavy_check_mark: |:heavy_check_mark:|
 | |[Encosed Bottom](./Kruppes/Closed_Bottom) | Modified printed parts and panel to fully enclose V0. |:heavy_check_mark: |:x: |:x: |:x:|
 | |[V0 Printed Deck with inserts](./Kruppes/Deck_Panel_inserts_logo) |Electronics Deck Panel using brass heat inserts. Optional with accent color Voron Logo. |:heavy_check_mark: |:x: |:x: |:x:|