This is my modifications and build instructions for the CFS K2 Plus Dryer by Sfanella_JKAf. The major changes are around the transformer used and how power is supplied to the unit.
3D printingStart by 3D printing the original parts replacing "retro riscaldatore.stl" with the modified case attached. Print using ABS or ASA filament. Rotate the case on the build plate before slicing. Use a 0.2mm layer height without supports. See https://www.crealitycloud.com/model-detail/cfs-k2-plus-dryer for STL files and instructions.
Start by adding the insert nuts. The base inserts that hold the terminal blocks are M3 x 3mm height x 4.2mm diameter. The rest of the inserts are M3 x 4mm height x 5mm diameter. You need 8 for top side of case, 2 for power hole, 4 for fan holder and 2 for heater unit.
Make sure you use inserts designed for plastic.
Solder wires to the 12V 1A transformer module.
Add a 4 way 10A terminal block using 2 x M3 10mm screws.
When using barrier terminal connectors with high voltages or high currents, I strongly recommend using Ferrules when screwing in the cables. (See TO FERRULE OR NOT TO FERRULE).
Screw the fans and heater module onto the front panel. Note that the fans blow air into the unit so that it comes back out through the heater element.
Wire up as shown below.
Close the left panel using 4 x M3 8mm screws.
Next add the W3230 Temperature Control Module and its temperature sensor to the front panel.
Add a 2 way 10A terminal block using a M3 10mm screw.
Screw in the C8 power socket using 2 x M3 12mm screws. This will need to be removed once the unit is finished and tested so that it can be inserted through the top of the CFS unit.
The Thermostat Controller sits in the slot provided. The wiring to the controller is attached using M4 Fork connectors.
If you are unsure about the wiring, here is a copy of the wiring provided by Sfanella_JKAf (Note: the only difference with this build is the transformer used).
Close up the unit for testing.
TestingStart by setting the thermostat controller potentiometer to around half way. See the following video on how to set the W3230 Temperature Control Module.
Installing the unit in the CFSOnce you have tested the unit, unscrew the C8 power socket and remove its connections on the terminal block.
Print the "Power Template.stl" file and add double sided tape onto one side.
Position the CFS dryer inside the lid of the CFS and stick the template to the outside of CFS so that the holes line up with the power socket on the CFS dryer.
Carefully drill and file the lid of the CFS so the C8 socket will sit in the lid.
Put the C8 socket through this hole and into the CFS dryer. Screw the CFS dryer to the CFS lid using 2 x M3 12mm screws.
Open the controller section and screw the two power wires back into the terminal block. Finally close the case. The screws will hold the CFS dryer in place.
Thank you Sfanella_JKAf for a great design. This is a great addition to the Creality Filament System. Unfortunately it only gets up to around 60 degrees Celsius and not the 70 degrees that I was hoping to see (even with the Thermostat Controller set to maximum).
Also there is no power switch so it has to be unplugged when not in use. This can easily be fixed by adding a inline power switch on the power cable.
Comments