The Felfil Evo Complete Kit includes all the component of the Felfil project, instead the Basic Kit includes only the mechanical parts. In this case you have to complete the extruder following our guides.

If this happen, the purge procedure is quite simple. First of all you have to cool down the extruder, than empty the hopper and set 250°C.
When the temperature is reached set the RPM to 7, and let it runs. A little trick is to place the power supply body under Evo in order to let the material run out also if it is in the feeder part of the screw. Let it work until the material starts to come out again.

If the previous procedure didn’t work in your case, you have to manually clean the extruder especially the barrel and the screw.
In order to do that, please follow these steps:

( WARNING: this procedure must be done when the extruder is still hot since the plastic inside must be melted in order to clean the extruder. So take every precaution to protect yourself, use protective gloves and all the needed DPI)

– Open and remove the upper aluminium case unscrewing the 4 small hex screws.

– Remove the insulating foam from the barrel and the upper hopper. 

– Unscrew the 2 front screws that fix the structural support to the low case. 

– Unscrew the 4 screws that fix the gearmotor to the structural support.

– Rotate the extruder out of its case.

– Pull out the geramotor and the screw.

Now you are able to remove all the plastics from barrel and extrusion screw. 

Once done reassemble the extruder.

We tested: HIPS, TPU, T45 (ABS-PC), ABS, HDPE, PMMA, PETG, NYLON and PLA filament. However, many other polymers can be extruded such us composite materials.

You can shred your plastic waste using some scissor or an hammer. Then you can use a domestic blender to make the pieces smaller. But don’t panic, we are developing a new shredder.

Felfil Evo can work with a material size of about 10x5x5 mm

If the filament goes out too thin, you have to set down the temperature. Try with little steps (2-3°at times).

If the filament goes out too thick, you have to set up the temperature. Try with little steps (2-3°at times).

The “Protection mode” appears when the motor power consumption is too high (more than 2A @12V). 

To solve this problem please follow these steps:
– Rise the temperature to 250°C.
– Wait for about 10 minutes until you’ll see that the material starts to come out from the nozzle.

– Now set the Engine RPM to “7” in order to clean the barrel.

Let it work until the material starts to come out again and stop this procedure only when the polymer flow becomes very slow.

If you noticed that the material is leaking from the nozzle you have to replace the O-ring inside the nozzle.
In order to do that, first of all  open and remove the upper aluminium case unscrewing the 4 small hex screws.

Now you have to unscrew the nozzle 3 black hex screws.

Than replace the faulty O-ring.

Before restart extruding please remove all the leaked polymer and check the heaters, because often the melted material could also fill the heater’s mounting holes.

Clutch

We included a slipper clutch inside the spool in order to allow the filament to be collected on the spool without being stretched.

When it works properly you’ll be able to stop the spool holder applying a small force with your finger without affecting the motor shaft, that will continue to spin freely.

If you are noticing an unexpected behaviour from the spool holder probably the clutch is not properly set.
The following procedure will guide you in the slipper clutch setting.

Too tight clutch:
If the clutch is too tight the stepper motor’s shaft will be not able to rotate (while turned on) when you stop the spool holder (the black plastic part), and you’ll see the motor shaking in both directions.
In this case you have to unscrew a little bit the bolt in front of the spool holder. 

In order to do that use an allen and a wrench. Keep the shaft locked with the allen than make half of turn with the wrench unscrewing it, than turn on the spooler ad check if the shaft is now free to rotate. 

If the problem persists repeat the operation, untightening a little bit.

Too loose clutch:
If the filament can’t be collected on the spool, but the spool is actually spinning, the clutch is probably too loose. 

You have to tight it, since it need to be hard enough to bend the filament, keeping the shaft free to rotate.

In order to do that use an allen and a wrench. Keep the shaft locked with the allen than make half of turn with the wrench screwing it, than turn on the spooler ad check if the shaft is now free to rotate. 

If the problem persists repeat the operation, tightening a little bit.