User`s manual

50
Chapter 9
Double extruders
Printing with two extruders poses no particular diiculty if the calibrations of extruders physical and
soware were made correctly. Here are all the steps to get the perfect setup. We are assuming that
your print plan is aligned properly with a single extruder, extruder detached from le to right and po-
sitioned on the le-hand side, in contact with the magnet of parking. The distance of the plane from
the tip must be virtually nothing, but without the tip rests: we use a ticket on thermal paper (bit thin-
ner paper that you can easily nd) to verify that in the various places you can slide the piece of paper
with a minimum of resistance, but without blocks or that course too easy (for further discussion see
Chapter 4). When you want to print an object to color, you should double from a le appropriately
prepared for this operation as described in the manual of Slic3r. Aer you import the xxxxxxxx.amf
le in the slic3r, select the SharebotDualstrusion.ini printer proles to correctly create a G-code le.
Central clamp
Now you can reconnect the two extruders using the central clamp with the two allen head bolts.
Do not tighten them and screw them place the extruder torque in a central area of printing. Always
use a piece of thin card, ensure that the extruder is still aligned right, then explored the le guring
if ranked, lowest or higher. If aligned, tighten the two bolts carefully avoiding the bracket involves
displacements in the alignment. If the tips are not jog, you can use the same to raise or lower the two
ends by imposing a slight rotation to both extruders from the bracket and tightening the screws to
hold the position. Remember to tighten with a certain decision both bolts as the vibrations may in
time result in loss of any realignment obtained with this system. At the factory your Sharebot was
however checked and calibrated relative to alignment, but if you have disconnected the extruders or
loose central bracket bolts, you must perform the above operation for each “combination” of extrud-
ers. If in spite of the measures listed above are required a further correction to bring the same vertical
level the second extruder, you can adjust the adjustment screws placed on the two external sides of
carts with caution. A good technique is to invoke an auto-home of the printer, make the menu “move
axis” the truck centre plate extruder press and by turning the adjustment screws 2 on each basket
align the lower extruder to the highest one. At this point if necessary you can re-adjust the printing
plate by acting solely on rear dial that serves as the end stroke, z-axis to move it closer to or further
from the extruders (see Chapter 4).