How to do a nozzle wipe before every print - Gcode Scripts part 2 Video Lecture | What is 3D Printing: Basic Knowledge - IT & Software

how's it going guys Angus here from
makers Muse feels good to be back making
some videos for you guys so this is part
two of my 3d printing 101 on makers muse
guide to start and end G code scripts so
if you haven't seen part one definitely
go check the video out where I describe
what start and ng cut scripts are in
your slicer and how you can sort of
better understand them and manipulate
them to get the best results possible
over your 3d printer but this is part
two where I want to take some ideas from
a current profile within simplify 3d and
then transfer it to another profile I'm
using to see if I'm transfer what I like
out of that start G code into the start
G code of the other printer so let's get
started alright so here I have a profile
for the original pressure III mark 2 in
simplify 3d which was given to me by
spanner hand so big thanks to those guys
it's working very well so with the
pressure by 3 mark 2 before every print
it does what's called a purge line by
using this profile and that means it
will do a line of plastic to get the
nozzle primed and ready to print and
then it will go on and start printing
and I really like that idea it works
well it make means the nozzles got
plastic in it ready to flow as soon as
the print starts but my current i3
profile for when how I three doesn't do
that so I want to take that idea and
then push it forwards into my a3 profile
for the one house so let's go into the
process for the the pressure I three and
under scripts here we have the starting
script for the PRU shot I three mark two
so let's go through it basically we
start with G 28 so as I explained in my
previous video this is a home so it's
going to hone the machine to 0 0 0 now
the profile here does actually have some
things that are unique to the pressure i
three mark two and that is G 80 that is
mesh bed leveling which is a fantastic
way to make sure the nozzles got the
correct distance even if the beds not
perfectly flat it's actually really cool
it works very well on the pressure i 3
mark - but the when how i three doesn't
have that feature so that's not
something I'm going to be looking for -
transferring it's these next lines that
I care about so here we have G 1 y -3 F
1000 so what that's going to do it's a
movement command G 1 so it's going to
move the nozzle to y -3 outside of the
print area in absolute coordinates so
you start at 0 it's going to minus 3 and
and it's going to do the next line G 1 X
60 is going to move it to X 60
coordinate and also een ein which means
going to start extruding some plastic so
it's doing that at F 1000 which is in
millimeters per minute and then it's
going to continue so it's got G 1 X 100
e 12.5 and then F 1000 again so it's
going to do another little bit of that
purge line then the print will start so
I really like this idea I want to
transfer it to my profile for the web
how I three so let's fire up that
profile so my when how I three version
two is pretty heavily modified it's got
a print bite surface and a flexing on
extruder so it's pretty heavily modified
from stock so I made my own process that
I use all the time
but under scripts all I have for the
starting script is G 28 and that's the
default if you make a custom profile in
some of flights ready it'll stick G 28
in but that's it you've got nothing else
to play with so I'm going to take what I
learned in the pressure I three mark two
and transfer it into this profile so
what I'm going to do is a move command G
one so enter G one here and then I what
I want to do is basically I want to move
the nozzle out of the print area
slightly so what you would have seen in
the crucial eye three mark two profile
starting script is it had y -3 now some
machines won't let you move out of the
the bounds of the the print area but
some will so this may not work for yours
you may have to just do happy be happy
with zero but I'm going to try y -3 I'm
going to do y minus 3.0 just to make
sure I'm being accurate here so I've got
the decimal point you don't to be miss
placing a decimal point or anything like
that such as a good way to make sure you
put the right numbers in so y -3 and it
had a feed rate of 1000 before it's
quite fast on the pressure I think
because the design of the Flexi on
doesn't quite like those high speeds at
low temperatures at least in my
experience I'm going to try doing F
500.000
well let's find out and then I'm going
to do a semicolon which is again a
comment so you can comment things to let
people know what you're doing so I'm
going to do move
out of print volume for you right and
then I'm going to do another move
command G 1 this time I'm going to start
moving across the to the x coordinate so
we saw X 60 I'm gonna steal that
completely as 2 X 60 point 0 and then
we're going to start extruding stuff so
extruding is e so I'm going to do e and
I'm going to do e 9 so so this may vary
depending on your printer but inai knits
going to move 9 millimeters but move 9
millimeters of plastic if that makes
sense
so let's go a 9 and then again F a 500
so it's going to do start per line and
then finally G 1 X 100 point 0 and then
I don't remember what the other extruder
1 was the previous one so I'm going to
do e 14 maybe might be a little bit much
that's I think artist 12.5 a 12.5 I'm
going to copy it exactly and again as
just do F 500 point zero 9 right so what
I've got then I double-checked my code
so we've got G 28 home all axes G 1 y -3
moved out of the building by minus 3 f
500 again I'm going half the speed the
pressure one was at but I don't mind
going bit slower there move outside
print volume G 1 X 60 moved to
coordinates for X at 60 e9 start pretty
much start extruding as it moves and F
500 and then G 1 X 100 e 12.5 and again
F 500 finish the purge line so I'm going
to send that to my 1 how I 3 and let's
see how it looks
it's next watching guys hope you found
this follow-up video on start and ng cut
scripts handy again they're very very
powerful and useful features but this is
by no means meant to be a crash course
into how to like program in G code
that's how far more complicated topic
but if you are interested definitely
watch the first video where I go into
the different commands in a little bit
more depth and look for to see you again
very shortly here on Magus muse catch
later guys bye