Prusa i3 MK2S, User Manual

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unscented ​ ​ paper ​ ​ towel ​ ​ and ​ ​ wipe ​ ​ the ​ ​ print ​ ​ surface. ​ ​ The ​ ​ bed ​ ​ should ​ ​ be ​ ​ cleaned ​ ​ while ​ ​ cold ​ ​ for
the ​ ​ best ​ ​ results ​ ​ but ​ ​ it ​ ​ can ​ ​ also ​ ​ be ​ ​ cleaned ​ ​ when ​ ​ already ​ ​ preheated ​ ​ for ​ ​ PLA, ​ ​ just ​ ​ be ​ ​ careful
not
​ ​
to
​ ​
touch
​ ​
the
​ ​
bed
​ ​
surface
​ ​
or
​ ​
the
​ ​
nozzle.
​ ​
When
​ ​
cleaning
​ ​
at
​ ​
higher
​ ​
temperatures
​ ​
the
​ ​
alcohol
will ​ ​ evaporate ​ ​ before ​ ​ it ​ ​ can ​ ​ clean ​ ​ anything. ​ ​ Alternatively, ​ ​ you ​ ​ can ​ ​ clean ​ ​ the ​ ​ bed ​ ​ with ​ ​​ warm
water ​ ​ and ​ ​ a ​ ​ few ​ ​ drops ​ ​ of ​ ​ a ​ ​ dish ​ ​ soap ​​ ​ on ​ ​ a ​ ​ paper ​ ​ towel. ​ ​​ Denatured ​ ​ alcohol ​​ ​ is ​ ​ yet ​ ​ another
option.
The
​ ​ surface ​ ​ does ​ ​ not ​ ​ have ​ ​ to ​ ​ be ​ ​ cleaned ​ ​ before ​ ​ every ​ ​ print! ​ ​ It ​ ​ is ​ ​ just ​ ​ important ​ ​ to ​ ​​ not
touch ​​ ​ the ​ ​ print ​ ​ bed ​ ​ with ​ ​​ your ​ ​ hands ​​ ​ or ​ ​​ dirty ​ ​ tools ​ . ​ ​​ Clean ​ ​ your ​ ​ tools ​ ​ with ​ ​ the ​ ​ same
solution ​​ ​ as ​ ​ you ​ ​ would ​ ​ the ​ ​ bed ​ ​ and ​ ​ you ​ ​ will ​ ​ be ​ ​ able ​ ​ to ​ ​ start ​ ​ your ​ ​ next ​ ​ print ​ ​ right ​ ​ away.
You
​ ​ can ​ ​ leave ​ ​ small ​ ​ marks ​ ​ on ​ ​ the ​ ​ print ​ ​ surface ​ ​ with ​ ​ your ​ ​ nozzle ​ ​ or ​ ​ tools, ​ ​ they ​ ​ will ​ ​ typically
be
​ ​
shinier
​ ​
than
​ ​
the
​ ​
rest.
​ ​
It
​ ​
does
​ ​
not
​ ​
affect
​ ​
the
​ ​
functionality
​ ​
or
​ ​
adhesion.
​ ​
However,
​ ​
if
​ ​
you
​ ​
want
to
​ ​
have
​ ​
same
​ ​
surface
​ ​
look
​ ​
on
​ ​
the
​ ​
whole
​ ​
printbed
​ ​
you
​ ​
can
​ ​
resurface
​ ​
it.
​ ​
The
​ ​
easiest
​ ​
way
​ ​
is
​ ​
to
take
​ ​
a
​ ​
hard
​ ​
side
​ ​
of
​ ​
dry
​ ​
kitchen
​ ​
sponge
​ ​
and
​ ​
wipe
​ ​
the
​ ​
affected
​ ​
area
​ ​
with
​ ​
circular
​ ​
motion
​ ​
gently
few
​ ​
times.
The
​ ​
industrial
​ ​
glue
​ ​
which
​ ​
holds
​ ​
the
​ ​
PEI
​ ​
sheet
​ ​
on
​ ​
the
​ ​
heatbed
​ ​
itself
​ ​
softens
​ ​
when
temperatures
​ ​
greater
​ ​
than
​ ​
110
​ ​
°C
​ ​
are
​ ​
used.
​ ​
If
​ ​
higher
​ ​
temperatures
​ ​
are
​ ​
used,
​ ​
the
glue ​ ​ can ​ ​ migrate ​ ​ under ​ ​ the ​ ​ PEI ​ ​ and ​ ​ create ​ ​ slight ​ ​ bumps ​ ​ on ​ ​ the ​ ​ surface.
6.3.3 ​ ​ Increasing ​ ​ the ​ ​ adhesion
In
​ ​
some
​ ​
special
​ ​
occasions,
​ ​
like
​ ​
a
​ ​
tall
​ ​
object
​ ​
with
​ ​
a
​ ​
very
​ ​
small
​ ​
contact
​ ​
area
​ ​
with
​ ​
the
​ ​
print
surface,
​ ​
you
​ ​
might
​ ​
need
​ ​
to
​ ​
increase
​ ​
the
​ ​
adhesion.
​ ​
Fortunately
​ ​
PEI
​ ​
is
​ ​
a
​ ​
very
​ ​
chemically
resistant
​ ​
polymer
​ ​
and
​ ​
you
​ ​
can
​ ​
temporary
​ ​
apply
​ ​
other
​ ​
adhesion
​ ​
solutions
​ ​
without
​ ​
damaging
it.
​ ​
This
​ ​
also
​ ​
applies
​ ​
to
​ ​
materials
​ ​
which
​ ​
would
​ ​
not
​ ​
stick
​ ​
to
​ ​
PEI
​ ​
otherwise,
​ ​
like
​ ​
Nylon
​ ​
etc.
Before
​ ​ applying ​ ​ anything ​ ​ to ​ ​ the ​ ​ bed, ​ ​ consider ​ ​ using ​ ​​ Brim ​ ​ option ​​ ​ in ​ ​ Slic3r ​ ​ which ​ ​ increases
the ​ ​ surface ​ ​ area ​ ​ of ​ ​ the ​ ​ first ​ ​ layer.
For
​ ​ PLA ​ ​ and ​ ​ Nylon ​ ​ blends ​ ​ a ​ ​ simple ​ ​ glue ​ ​ stick ​ ​ does ​ ​ the ​ ​ trick. ​ ​ Glue ​ ​ can ​ ​ be ​ ​ later ​ ​ easily
removed ​ ​ by ​ ​ window ​ ​ cleaner ​ ​ or ​ ​ dish ​ ​ soap ​ ​ water.
For
​ ​ ABS ​ ​ prints, ​ ​ ABS ​ ​ juice ​ ​ can ​ ​ be ​ ​ used ​ ​ and ​ ​ later ​ ​ cleaned ​ ​ with ​ ​ pure ​ ​ acetone. ​ ​ Be ​ ​ very ​ ​ gentle
when ​ ​ applying ​ ​ the ​ ​ juice ​ ​ and ​ ​ do ​ ​ so ​ ​ while ​ ​ the ​ ​ bed ​ ​ is ​ ​ cold. ​ ​ Prints ​ ​ will ​ ​ attach ​ ​ very ​ ​ strongly.
Prepared
​ ​​ juice ​​ ​ can ​ ​ be ​ ​ also ​ ​ purchased ​ ​ in ​ ​ our ​ ​ e-shop. ​ ​ Unfortunately, ​ ​ UPS ​ ​ service
does ​ ​ not ​ ​ allow ​ ​ to ​ ​ deliver ​ ​ any ​ ​ acetone-based ​ ​ products ​ ​ due ​ ​ to ​ ​ shipping ​ ​ constraints. ​ ​ In
that ​ ​ case ​ ​ you ​ ​ get ​ ​ only ​ ​ the ​ ​ bottle ​ ​ and ​ ​ ABS ​ ​ from ​ ​ our ​ ​ e-shop ​ ​ and ​ ​ you ​ ​ have ​ ​ to ​ ​ source
the ​ ​ acetone ​ ​ locally.
6.3.4 ​ ​ Selftest ​ ​​
(kit ​ ​ only)
The
​ ​ purpose ​ ​ of ​ ​ the ​ ​ selftest ​ ​ routine ​ ​ is ​ ​ to ​ ​ check ​ ​ most ​ ​ common ​ ​ errors ​ ​ when ​ ​ assembling ​ ​ and
connecting ​ ​ electronics ​ ​ and ​ ​ to ​ ​ help ​ ​ indicate ​ ​ any ​ ​ possible ​ ​ errors ​ ​ after ​ ​ assembly. ​ ​ You ​ ​ can ​ ​ run
the
​ ​​
Selftest
​ ​​
from
​ ​​
Calibration
​ ​​
menu
​ ​
on
​ ​
LCD
​ ​
panel.
​ ​
This
​ ​
should
​ ​
not
​ ​
be
​ ​
necessary
​ ​
on
​ ​
the
assembled
​ ​
printers
​ ​
as
​ ​
those
​ ​
are
​ ​
pretested.
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