Slic3r Configuration

[jamirie]

Hey Folks ;D
Skeinforge and me never really got friends, so i decided to give Slic3r a try.
A much more userfriendly Interface vs. less options to configure.

I really like how it looks like and interacts, but am not that experienced with it by now.
After my first try, i recognized the speed was way to high for my configuration, so i halfed all speed settings. But still encounter some probs. I attatched a picture of a part from Airtrippers V3 Extruder (thanks for great work mate!) i've just printed a couple minutes ago.
First Layer was printed at 190°C, all others at 185°C. In the middle of the print it seems like there was not enough extruded to get a straight line. The whole print looks a bit filthy...

Besides i think the print speed is still to fast...

Any suggestions/experience with it?














Happy new year everyone!

[wills]

Could be too fast. What settings are you using?

[jamirie]

Where can i find the config file from slic3r? So i could post whats in there....

[airtripper]

I'm a big fan of skeinforge, it's all I use so far. However, Slic3r is looking a lot better since I last used it and might give it another go.

Anyway, here is a G-code file to print the idler and strut in one go. layer height is 0.25mm. Just set the temperature yourself and it is good to go. Feed rate is 16mm/s and you can use this as a bench mark to judge from.

Attachments:

[airtripper]

And here's the G-code for the extruder and axle combined in to one print.

Attachments:

[jamirie]

Thanks Airtripper, in print right now.... It took many time and trys to get the first layer sticking at my build platform... So maybe i should recreate the heated one you did with resistance wire Im looking for some floatglass meanwhile.

However, i'll post the results *agog*

EDIT: Tadaaaa, there it goes! Just finished after 2:45hrs, here's a sneak peak for today, more pics tomorrow- good night everybody!

[jamirie]

So here's the result in detail, some of the holes and edges suffer from oozing i think, but all in all for my first bigger print - I like! ;D
I printed at 185°C, first layers at 190°C, in the beginning it seems like the Filament is pulled back to much, so the first 30seconds it won't extrude anything... Did you set it up like this Airtripper?

And tried the other file as well, but the travel movement somehow seems so random that i can't get accurate edges... I'll give it another try right now, will report back soon

Again, i'd like to thank you all for helping us noobs to get our Printer printing! Great Forum so far, even though there's not much going on by now- it hopefully will in the Future!

Keep "podding"!

[airtripper]

The extruder and the strut look very good and usable. You just need to clean them up a bit with a sharp knife, some drill bits and a file or two.

No retraction was added to the g-code to control oozing, this is something you can experiment with yourself to suite your set up.

Before you press the print button in Pronterface, you need to load the nozzle by extruding some plastic. This will ensure the plastic will extrude at the beginning of the print. You should also home all axis immediately before you start the print because the filament will retract back to zero if you don't, which may responsible for the extruder retraction and 30 second extrusion delay.

As the print bed moves to meet the nozzle you will have time to give the nozzle a couple of wipes to remove ooze.

Temperature
It looks like your filament might work better at a lower temperature after the first layer. It might reduce oozing. Try 180 degrees to start with.

[jamirie]

I added G92 E0 after G21 in your gcode - that fixed the retraction completely.
Before any print i do some extruse to check if it is working correctly. Home all axis is always set in my standart Gcode made by Slic3r

About the temperature: Yes, i do think so too Tried 180°C and it looks even better, not that heavy shiny finish.

Now i printed all parts for the V3 Extruder *happy* and will order the hardware for it soon

Ahh, is it possible to use this MK7 Pulley with it: www.ebay.de/itm/271012284234?ssPageName=STRK:MEBOFFX:IT&_trksid=p3984.m1427.l2649


EDIT: Done Here are all printed parts for the new Extruder! Cant wait to put it together and test it!

[airtripper]

The MK7 gear pulley fits perfectly in extruder v3. For the job it does, it is well worth the money and it is probably the best pulley available.

The link to the ebay item is where I got mine from a couple of weeks ago.

You may have to boost the amps a bit on the stepper driver board because the gear has a much larger diameter than the gear that come with the Sumpod.

If you do get this gear you can update the steps per unit to the following:

#define DEFAULT_AXIS_STEPS_PER_UNIT {106.76, 106.76, 800, 48.14} // default steps per unit for ultimaker

[jamirie]

Thanks! So i'll order it

I recognized an issue with the Extruder shaft... When i look at your printed one at your blog, all holes seem to be on the opposite site as mine, somehow mirrored... What did i do wrong?

[airtripper]

You do have a mirrored extruder! you must have an axis moving the wrong way with an end stop fixed at the wrong end.

Your bed would be the X axis while the hot end is on the Y axis. Homing will position the nozzle to the front left of the build area.

If there is an end stop positioned on the wrong side then you could re-connect the end stop to the + connector like you do with the z axis and then make the adjustment in firmware for end stop and stepper motor. You may have to invert or otherwise the stepper motor to make it go the right way.

Making these changes, like the Z axis, will make the axis in question home to the maximum position instead of 0 position.

Hope that makes sense.

[jamirie]

Hmm, but all my endstops seems to work correct... When i home, the Y-Axis moves backwards to the endstop, X-axis moves right, so the nozzle ends up beeing right over the left back of my build area... That was the standart Sumpod setup...

My Axis movements (looking at the Front of the Sumpod):

X+ = left side
X- = right side to endstop
Y+ = move to front
Y- = move back, towards endstop
Z+ = move downwards to endstop
Z- = move up towards nozzle

Is that not right?

[airtripper]

You have got the Y axis back to front. coordinates 0,0 is front left. So you need to plug your Y end stop in to the Y+ connector. and change the following:

// ENDSTOP SETTINGS:
// Sets direction of endstops when homing; 1=MAX, -1=MIN
#define X_HOME_DIR -1
#define Y_HOME_DIR 1
#define Z_HOME_DIR 1

You will also have to change the Y axis stepper motor direction.
You also need to make sure that
#define Y_MAX_LENGTH
is not bigger than the physical printable area.

[jamirie]

So i physically need to turn the endstop of Y to the front instead of back?