Simplify3D User Forum

Posted: **Thu Mar 05, 2015 10:34 am**

Hello everyone,

I just got S3D a couple of days ago. I am trying to make my prints more accurate so I did some searching on here and found that I needed to make a GBX.ini file. I did that and put the code in the scripts section of the profile, but when I make changes to the x and y steps per mm it doesn't seem to be affecting the outcome.

Here is a copy and paste of my GBX.ini file

Code: Select all

;
;  gpx.ini 
;
; gcode to x3g conversion configuration file

[printer]

; specify the machine definition using a pre-defined built-in type identifier
; NOTE: settings are order dependent, so always start with this settng
;    r1  = Replicator 1 single
;    r1d = Replicator 1 dual
;    r2  = Replicator 2 (default)
;    r2h = Replicator 2 with HBP
;    r2x = Replicator 2X

machine_type=r2h

; specify the gcode flavor
;
; reprap = M109 Set Extruder Temperature and Wait
; makerbot = M109 Set Build Platform Temperature (Same as M140)

gcode_flavor=makerbot

build_progress=1

; SD Card path - if inserted the x3g file will be written there
;sd_card_path=/Volumes/THINGS

[x]
steps_per_mm=89.99

[y]
steps_per_mm=90.91

Here is the line in the process:

Code: Select all

C:\Program Files\Simplify3D-2.2.2\gpx -p "[output_filepath]"

Am I doing something wrong?

Posted: **Sun Mar 08, 2015 11:39 am**

I wonder if the fact that you are specifying the machine type in the ini file is overriding your steps/mm settings? It might be safest to just re-create the entire ini file and then remove the machine_type line.

Posted: **Sun Mar 08, 2015 1:58 pm**

I have found the most recent profile for the R2 to be very good scale-wise. I would suggest you save any important profiles, and do a reset all in S3D and then do the configuration assistant select R2 and then go into firmware and the x3g tab to make sure you have the correct variant of the r2 selected.

I get prints that are exactly dead on with PLA. And for ABS I simply scale the model up 1.01 in x and y, and 1.005 in z to allow for abs shrinkage. With the newer default S3D settings for the R2.

Also bear in mind the machine has a tolerance of .2mm and STl files are only as good as they are created in terms of their settings.

Posted: **Sun Mar 08, 2015 6:13 pm**

Thanks for both of the replies.

I was not aware that I could just edit the steps per mm in the firmware settings. I did that and after printing 3 calibration cubes I was able to get it within .001" on a one inch cube. So I am happy with that. I am making prototype parts and dimensions are very critical for us.

Posted: **Mon Mar 09, 2015 7:54 am**

Rednels wrote:Thanks for both of the replies.

I was not aware that I could just edit the steps per mm in the firmware settings. I did that and after printing 3 calibration cubes I was able to get it within .001" on a one inch cube. So I am happy with that. I am making prototype parts and dimensions are very critical for us.

Yes that was why I suggested doing a reset all. The more recent version of S3D has better firmware numbers (steps/mm) for the R2. I kind of stumbled across them because I had to do a reset all for a different reason. Then I noticed my ABS prints were coming out too big, because I was using too large a scale up (because the old steps/mm weren't as accurate as they are now).

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