ink is caking on nozzle instead of laying on print bed

I really hope that is a typo. the bed should be 100c and the nozzle should be 200 to 230c. Also the bed should actually be 90. Now the most common problem that keeps the filament from sticking is that your nozzle is not close enough to the bed. There should be about a .10mm gap between the nozzle and bed. No greater than .20mm. You need to adjust your Z offset so the bed is closer. Also what are you using to aid adhesion? ABS will not stick to bare glass. You need to use glue sticks, ABS juice, or hair spray.

crank up the heat my friend... nothing makes this crap stick if you don't have enough heat.

It wasn't a typo, goes to show how new I am to this. I just measured the gap and one thin wallet card fits at about 0.4mm. Is there a way I can adjust the Z gap after auto-leveling to 0.15? Here is the code I used for the auto-leveling:

G21 ; set units to millimeters
M107
G28 X0 Y0 ; home X and Y
G29 ; probe bed
G90 ; set absolute coordinates
G92 E0 ; reset extruder distance
G1 Z5 F300 ; move platform down 5mm
G1 X145 Y145 F3000 ; move to back right corner

As for glue, I bought two big glue stick and started using one. The liquid part just evaporates and I'm left with a dry white film, nothing sticks to it.

I set the extruder to 230C and the printbed to 90. Should I head up the print-bed more?

Thanks guys

Click on IronMan's link. You definitely need to fix the z-offset. That's what is causing your problem.

I think this will solve your issue!

4mm will be appropriate for such a large build area...it is a bit thicker than what most of us use, just make sure you give it some extra "soak time" (maybe about 5 minutes) after your bed temp reaches its target before you start the print.

Good luck and keep us posted!

You may also consider Aquanet hairspray...works great!

Thanks for the advice on glue guys, I think it's working!

The only thing is, when the calibration happens, now for some reason, when the head backs up to do calibration points 5 to 8 (2nd row), there is a noise as it back up and it doesn't go as far back as it should. So the print job starts off the plate because the lower end is calculated too far forward.

How can I stop that noise from happening?

Edit: I got the noise to stop by playing with the Y coordinates and manually playing with the position of the print head.

Now the problem I'm facing is that just one quadrant of the print bed is not seeing the plastic stick to the bed, though I applied a lot of glue.

Edit 2: The piece was going nicely when there was a friction sound 0.5h into the job, and the thing started printing too far. I'm not sure how to fix this friction issue.

Edit 3: Sometimes during print the plastic flakes up as it dries up and the nozzle gets stuck on it and pushes it off the bed. Also, during calibration, the z-sensor scratches the dried glue and lifts it off the bed.

I got help from my guy at solidoodle, and over the phone he heard a noise while the z axis was moving and thinks that's what's causing an inaccurate automatic z-probing. I'll fix the noise issue there and see if that fixes it. He mentioned that the plastic might be flaking off the bed because the head is either a tad too high or too low in certain areas of the print.

As for the y-axis, I added a bit of grease and it sounds better. I guess I need to grease more often than I thought.

Also, I'm going to try using his recommended adhesive:

I'll update you with how that goes sometime next week.

Aqua net, glad to see SD has been paying attention

I just wanted to post the pictures of the piece we were finally able to print.

The issue was leveling. We were finally able to use the screws with the springs below the bed to set the bed and the nozzle level to each other.

I also ran into an issue when my yellow ink ran out, I wasn't able to feed the new ink in. But somehow, when I pushed the green ink in enough, when I ejected the green ink to troubleshoot, the yellow piece that was stuck inside popped out, and I was able to use the tweezers to feed it out.

And I was able to set up repetier and the drivers on a new computer, after the one I was previously using for 3D printing was taken for another purpose.

Lastly I found the aquanet on amazon and had it shipped to me, it worked like a charm. No glue sticks needed, no acetone. Just Aquanet. It works.

Anyway, I'm just glad I finally was able to achieve this piece.

And thanks everyone for your invaluable help.