Flashforge dual "left only" profile

[reddadsteve]

I have been using Simplify 3D for over a year and love it. I have one item that I cannot understand, which I believe affects my leveling.

I have the Flashforge Creator Dual profile loaded and there is a difference in the starting script for the right extruder only vs the left extruder only (besides the direction of the initial purge).

The "right extruder only" profile contains the following lines:
G1 X-110 Y-73 F5000 ; Fast wipe
G1 Z0.5 F100 ; Lift

and the "left extruder only" profile contains:
G1 X110 Y-68 F5000 ; Fast wipe
G1 Z1 F100 ; Lift
G92 A0 B0 ; Zero extruders

From what I understand, the end result is a different start height since both extruders are physically built at the same height..

Am I missing something?
Thank you,
Steve

[pcman]

I use the Flashforge Creator Pro profile, and both extruders are set to 0.5 lift. There isn't any logical reason for them to be different so it does look like an anomaly in your profile. I would change the left lift to 0.5 and test it.

[CompoundCarl]

That doesn't affect the first layer height. Look in the gcode. There will be another Z-axis move right before it starts printing where the nozzle moves to the correct height based on your layer height settings.

[reddadsteve]

Thanks for the replies. I rarely use the left extruder. I typically use the right for ABS and thought I'd try the left for a PLA test. The purge comes out nice and clean and sticks as expected, however I could not get the actual start of the print to stick properly. I went through a whole bunch of leveling attemps and could not find a suitable height, that's why I started to look at the gcode.

I'll make the change for the left to look like the right and give it another try.

In response to the comment about later in the gcode the z height will be correct, I believe that the issue there is the G92 sets the Z at 0 incorrectly.

Interesting thing about having a machine print ABS at times and PLA at other times is that releveling is required each time I change filament type. Leveling needs to be done at the proper bed temperature and the different material uses different bed temperatures.

Thanks,
Steve

[CompoundCarl]

Post your gcode if you don't believe me. The starting script does not affect the position of the first layer.

I don't see any G92 Z0 commands in the code you posted, so not sure why that's mentioned..

[reddadsteve]

Looks like I need to level my two extruders. My left apparently is a bit higher than my right and I cannot get the plate close enough to the left extruder to properly print. So that could explain why I thought I had an issue with the script.

I replaced the nozzle on my right extruder a few months ago and this was the first that I tried the left since, so it looks like I've got some work ahead of me to get the left working again.

I'm aware of how to get the nozzles in alignment but since the need is not that great at this time I'm just going to ignore my left extruder for now.

I'm not conversant in GCODE and simply saw a difference in the start scripts and thought that was the issue at first.

Thank you for your responses. When I finally get around to leveling the extruders, I'll use the S3D start script defaults before trying anything else.

Steve