Jump to content
Ultimaker Community of 3D Printing Experts
Sign in to follow this  

Nozzle double-dipping at start?

Recommended Posts

This probably isn't really a Cura problem, but rather user error or firmware "feature".

But I hope someone can enlighten me because it's quite annoying and I'm in a foul mood already (not because of this, but once in a bad mood, everything will make it worse :-/ )

Here's the situation:

I want to print an item. As usual, the head goes to 0/0/0, lifts a bit, extrudes filament.

Now it usually goes straight into the middle to print, but sometimes (as in, some models, not all of them - but it must be in the GCode, it's consistent) the head is lowered again, and it moves very close (I think at printing height) across the bed, dragging the pile of extruded filament with it.

What it usually does is go to the middle, lowering the head while doing so, thus NOT dipping into the discarded pile of filament.

Did I spoil the settings somewhere? I'm quite certain it doesn't always do that. Though I don't keep book about the things it does...

Cura: 15.04.3

Printer: Wanhao Duplicator i3

Windows 7

Share this post

Link to post
Share on other sites

No replies yet - no one else has this problem?

I *think* I may have found the reason, but not the why.

These lines seem partially redundant:


;LAYER:0M107G1 F2400 E-1.00000G1 Z0.075                                <--- What is this for?G0 F5400 X97.500 Y65.481 Z0.300


Why the G1 move? This must be the double-dip, but what purpose does it serve? I don't think it happens always, just with *some* models I'm trying to print?

Also, I know this is an outdated version of cura. I'll switch to the new one eventually, but for now I feel more comfortable with this and I don't want to learn a new Cura and calibrate the printer (the latter is bad enough).

Edited by Guest

Share this post

Link to post
Share on other sites

I don't know the G-codes, but I had this too a couple of times. I don't know why. After loading the model again in Cura and saving it again, this problem vanished. A bug?

When comparing G-codes of a good and bad model (from the same STL-file), there were indeed a few extra lines of G-code in the bad one. After removing them, it went all right too. But I don't remember which codes I removed.

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

  • Our picks

    • How to 3D print with reinforced engineering materials
      Ultimaker is hosting a webinar where we explain how you can achieve and maintain a high print success rate using these new reinforced engineering materials. Learn from Ultimaker's Product Manager of Materials and top chemical engineer Bart van As how you can take your 3D printing to that next level.
      • 2 replies
    • "Back To The Future" using Generative Design & Investment Casting
      Designing for light-weight parts is becoming more important, and I’m a firm believer in the need to produce lighter weight, less over-engineered parts for the future. This is for sustainability reasons because we need to be using less raw materials and, in things like transportation, it impacts the energy usage of the product during it’s service life.
        • Like
      • 12 replies

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!