1 Topic by oleskavhaug (edited by oleskavhaug 2015-02-08 13:46:57)

  • oleskavhaug
  • Newbie
  • Offline
  • Registered: 2015-02-08
  • Posts: 3

Topic: Press printing mid air

So i got my press some days ago (Norway) after waiting 6 months....
Problem starting with the abs filament not sticking on the bed, so i got some Koptan tape and its all good:-)
Using Soliprint v1.0 as 1.1 wont let me calibrate.
So i starts my first print, a Hello Kitty figure for my younges one:-)
I printing  at 0.3 mm (low) but still it looks ok, but it stops when it have about 15 % left:-(
Then i go on printing a mincraft enderman (smal one) ant its also ok.
Now my problems starts, when printing it starts mid air, about 0,3 - 0,5 cm above the bed......
I have tryed to re-calibrate, and it does it, also did send M502 followed up by M500 g-code before calibrating again, but it still starts every print mid air.....

Anyone have a solution? as i can see it it should be ok as it does calibrate ok.

Thanx!

2 Reply by Enkhuizen

  • Enkhuizen
  • Newbie
  • Offline
  • Registered: 2015-02-08
  • Posts: 2

Re: Press printing mid air

Copy paste from other post

Try repetier host and use these settings in the pre and post script gcode

Start :
G28 ; home all axis
G1 Z-5.0 F5000 ; Move platform down 5mm
M565 Z-1
G29 ; Bed Check - Z-Offset
End:
G28 X0 Y0  ; home X axis and y axis
G90
G91
M104 S0 ; kill extruder temperature
M140 S0 ; kill bed temperature
M84 ; disable motors
This way jobs sent to OctoPrint will Home all Axis and check the
Z-offset right before the print.
Works really well.

3 Reply by oleskavhaug

  • oleskavhaug
  • Newbie
  • Offline
  • Registered: 2015-02-08
  • Posts: 3

Re: Press printing mid air

Thanx for the reply!
As i have never tried Repetie Host, would u be nice to post some screen shots so i would be sure i put the info in right? :-)

Thanx!

4 Reply by rrssll

  • rrssll
  • Member
  • Offline
  • Registered: 2015-02-07
  • Posts: 42

Re: Press printing mid air

If you're using SoliPrint then it should add the appropriate start & end gcode for you. I use 1.0 for z calibration and 1.1 for printing.

I prefer printing with octoprint though. So I load my stl in Slic3r (which is the same slicer that Soliprint uses under the hood) and generate gcode from there. Then I upload the gcode file to octoprint.

So when I started with Octoprint I had the same problem air printing problem as you. Adding the G29 to the startup code was what fixed it. Now I find that I also need to rehome the z axis between prints. To add G29 in Slic3r, there's a box in Printer Settings > Custom G-code. My start gcode is:
G28 ; home all axes
G29 ;
G1 Z5 F5000 ; lift nozzle
G92 E0 ; reset extrusion distance

I haven't used Repetier Host before so I can't comment on how to set it in there.

Oh, and if you want to look at the start gcode that soliprint is using you can see it by viewing the log. View log is available from one of the Soliprint menus.

5 Reply by oleskavhaug

  • oleskavhaug
  • Newbie
  • Offline
  • Registered: 2015-02-08
  • Posts: 3

Re: Press printing mid air

Thanx for your answers!
As i had to go to work for some days ill test it when i get home.

6 Reply by sigilo (edited by sigilo 2015-02-18 05:25:12)

  • sigilo
  • Member
  • Offline
  • Registered: 2015-01-19
  • Posts: 15

Re: Press printing mid air

I had the same problem, it was driving me crazy, but i found out that it was the 3d SLT files i was using. For some reason they caused the printer to print in mid air. I started testing with STL files from thingieverse and, just to be sure, i ran them through the microsoft online model repair website.

https://modelrepair.azurewebsites.net

Now i have other problems with my Press... sigh... but at least is not printing in mid air.