Depending on the model of the FABtotum (Core, Pro editions) the filament is loaded and unloaded in a different manner.
It’s important to notice that since the Printing Head PRO does not require the feeder mechanism to work, the filament will not be inserted in the feeding mechanism but in a different loading hole.With the Printing Head PRO you can automatically unload or load a spool: from the Maintenance menu, go to Spool.
Such option is also available during a print if the print is paused.
You can also load and unload manually the filament by using the filament release lever on the back of the Printing Head PRO if the nozzle temperature is over 170°C and the unit is not performing any task.
As usual, make sure the filament entering the Head is straight and pointy (cut the tip with scissors at an angle).
The Core edition of the FABtotum Personal fabricator have a secondary hole in the spool compartment where to insert the filament if the Printing Head PRO is installed. It is marked by a label in the upper rear corner of the spool compartment.
Use this hole to insert the filament up to the Head.
Install the PTFE tube on the Printing Head PRO (1,2) and the back of the FABtotum CORE.
Do not use the onboard feeder mechanism to feed the Printing Head PRO.
Push the filament up until the Printing Head PRO feeding gear, then pull the lever in the back of the Printing Head PRO to complete insertion by pushing the filament further (3).
FABtotum Core PRO
The Core PRO edition of the FABtotum Personal Fabricator have a secondary hole in the spool compartment where to insert the filament if the print head pro is installed. It is marked by a label in the upper rear corner of the spool compartment.
Here a filament sensor will sense if the filament is present. Use this hole to insert the filament up to the Head.
Install the PTFE tube on the Printing Head PRO (1,2) and the back of the FABtotum Core.
Push the filament up until the Printing Head PRO feeding gear, then pull the lever in the back pof the Printing Head PRO to complete insertion by pushing the filament further (3).
Core Edition (up until May 2017) & Older Models.
Older units can operate the Printing Head PRO just like any other version above. However no hole in the back panel was present to push the filament, a feature needed unless the spool is kept outside of the unit during print.
Refer to the replicable parts archive to obtain thePrinting Head PRO hole mask to assist you in making a hole in the back of the unit for upgrade.
Notice: if your model does not feature a spool filament control (that pause the print in case of spool depletion) make sure to check that the remaining filament is enought for the print you are about to start or that you pause the print with enought filament remaining to allow a confortable extraction of the filament.
Once you are sure your unit is properly configured and upgraded, follow the instructions to insert and remove the filament from the Core Paragraph.
Filament Extraction/ Spool unloading
Filament extraction on the Printing Head PRO can be done manually or assisted via the spool load/unload procedure available in the Maintenance menu or during a Pause in the print. You can also trigger a pre-programmed pause by introducing a “M0” in the Gode at the desired line.
Once the procedure is completed you can remove the PTFE tube (1) by pushing the push-fit (2). Then pull the filament out of the chamber by pulling up the release lever with the nozzle still hot (3).