Prints mirror image I have a prusa i3 printer. I’m using Pronterface with slic3r for printing When I print something, It prints like a mirror image of what I want. On the computer on proterface plater it shows the part that is up to the top and when it prints on the bed that up part is down as if a mirror image . What is causing this? Ed https://reprap.org/forum/read.php?4,411062,411062#msg-411062 Sat, 08 Aug 2026 11:58:16 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?4,411062,417446#msg-417446 Re: Prints mirror image https://reprap.org/forum/read.php?4,411062,417446#msg-417446 If your prints are already being mirrored. Just mirror them back into right orientation.]]> pushthatbolder Reprappers Thu, 09 Oct 2014 23:49:16 -0400 https://reprap.org/forum/read.php?4,411062,416139#msg-416139 Re: Prints mirror image https://reprap.org/forum/read.php?4,411062,416139#msg-416139 Andrew Smith Reprappers Mon, 06 Oct 2014 12:48:16 -0400 https://reprap.org/forum/read.php?4,411062,415936#msg-415936 Re: Prints mirror image https://reprap.org/forum/read.php?4,411062,415936#msg-415936 polyglot Reprappers Sun, 05 Oct 2014 23:39:34 -0400 https://reprap.org/forum/read.php?4,411062,414510#msg-414510 Re: Prints mirror image https://reprap.org/forum/read.php?4,411062,414510#msg-414510 tobig11 Reprappers Thu, 02 Oct 2014 06:28:52 -0400 https://reprap.org/forum/read.php?4,411062,414127#msg-414127 Re: Prints mirror image https://reprap.org/forum/read.php?4,411062,414127#msg-414127 worked for me.]]> pushthatbolder Reprappers Wed, 01 Oct 2014 08:05:58 -0400 https://reprap.org/forum/read.php?4,411062,413816#msg-413816 Re: Prints mirror image https://reprap.org/forum/read.php?4,411062,413816#msg-413816 Thank you Ed]]> tobig11 Reprappers Tue, 30 Sep 2014 12:20:01 -0400 https://reprap.org/forum/read.php?4,411062,413699#msg-413699 Re: Prints mirror image https://reprap.org/forum/read.php?4,411062,413699#msg-413699 Andrew Smith Reprappers Tue, 30 Sep 2014 07:13:43 -0400 https://reprap.org/forum/read.php?4,411062,413693#msg-413693 Re: Prints mirror image https://reprap.org/forum/read.php?4,411062,413693#msg-413693 tobig11 Reprappers Tue, 30 Sep 2014 07:00:59 -0400 https://reprap.org/forum/read.php?4,411062,413457#msg-413457 Re: Prints mirror image https://reprap.org/forum/read.php?4,411062,413457#msg-413457
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tobig11
I will check this out tomorrow, I don't have any time to do it today. I will then get back to you
Question; If you set the z to max woun't it home to the top instead of the bed? what do you meam, specified for min/max in pins h. is that located in configg. h?

That is correct, homing at zmax will be at the top and you correct your "0-position" by telling Fw or EEprom your Z-max home position (max Z size). That is more comfortable than trying to make your home position swirtch correlate physical to your bed.
All pins for your arduino are defined in a file compiled with arduino "pins.h" just like config.h needs to be defined with your motherboard. Enter and find your motherboard if you need to change.]]> justcurious Reprappers Mon, 29 Sep 2014 15:56:37 -0400 https://reprap.org/forum/read.php?4,411062,413416#msg-413416 Re: Prints mirror image https://reprap.org/forum/read.php?4,411062,413416#msg-413416 Question; If you set the z to max woun't it home to the top instead of the bed? what do you meam, specified for min/max in pins h. is that located in configg. h?]]> tobig11 Reprappers Mon, 29 Sep 2014 14:25:49 -0400 https://reprap.org/forum/read.php?4,411062,413401#msg-413401 Re: Prints mirror image https://reprap.org/forum/read.php?4,411062,413401#msg-413401
Given that you had it set up backwards, you needed to invert the axis using the INVERT_Y_AXIS setting, toggling it from its present condition. Once you invert the axis, you have basically reversed MIN and MAX positions. So then you need to either 1) move the endstop to the opposite end of the axis without making any other changes to the firmware, or 2) leave the endstop at its present location, but change the Y_HOME_DIR to be MAX (1). Most people prefer to have their home position at 0, so I suggested that you would need to do option 1 and move your endstop to the rear.]]> jbernardis Reprappers Mon, 29 Sep 2014 13:58:32 -0400 https://reprap.org/forum/read.php?4,411062,413297#msg-413297 Re: Prints mirror image https://reprap.org/forum/read.php?4,411062,413297#msg-413297
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tobig11
In pronterface the y axis with plus goes to the back. In the frimware when the, y home dir -1 min, it would only home to the front to the front. I also change the, y min endstop inverting to false, or the endstop would not stop the table. My endstops are setup using NC and Com pins. On the board NC goes to S and COM goes -.
I changed the x axis, to the right, because the company I got the kit from said the x axix is suppose to be on the right as you fce the printer.
If the homing is suppose to be set at, MIN not MAX, how do you get it to home to the back using MIN in the frimware

Do not change too many things every time you want to try somethingb but keep it simple to avoid confusion.

In configuration you should see this which probably fits your printer as well:

Axes direction:

#define INVERT_X_DIR false // for Mendel set to false, for Orca set to true
#define INVERT_Y_DIR true // for Mendel set to true, for Orca set to false
#define INVERT_Z_DIR false // for Mendel set to false, for Orca set to true

Homing definition:
// ENDSTOP SETTINGS:
// Sets direction of endstops when homing; 1=MAX, -1=MIN
#define X_HOME_DIR -1
#define Y_HOME_DIR -1
#define Z_HOME_DIR 1

set x/y to min and x-endstop to your left, z to max and use the pins specified for min/max in pins.h]]> justcurious Reprappers Mon, 29 Sep 2014 10:51:11 -0400 https://reprap.org/forum/read.php?4,411062,413292#msg-413292 Re: Prints mirror image https://reprap.org/forum/read.php?4,411062,413292#msg-413292 I changed the x axis, to the right, because the company I got the kit from said the x axix is suppose to be on the right as you fce the printer.
If the homing is suppose to be set at, MIN not MAX, how do you get it to home to the back using MIN in the frimware]]> tobig11 Reprappers Mon, 29 Sep 2014 10:34:35 -0400 https://reprap.org/forum/read.php?4,411062,413213#msg-413213 Re: Prints mirror image https://reprap.org/forum/read.php?4,411062,413213#msg-413213 Andrew Smith Reprappers Mon, 29 Sep 2014 07:05:09 -0400 https://reprap.org/forum/read.php?4,411062,413201#msg-413201 Re: Prints mirror image https://reprap.org/forum/read.php?4,411062,413201#msg-413201
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tobig11
I set up the y axis to home to the back. this doesn't make any diference, it still mirrors everything when I print. Any more ideas? Also I had the x axix homing on the ldft I changed that to the right.

But why did you change the X-axis homing as well?]]> justcurious Reprappers Mon, 29 Sep 2014 06:47:40 -0400 https://reprap.org/forum/read.php?4,411062,413196#msg-413196 Re: Prints mirror image https://reprap.org/forum/read.php?4,411062,413196#msg-413196 tobig11 Reprappers Mon, 29 Sep 2014 06:42:47 -0400 https://reprap.org/forum/read.php?4,411062,413026#msg-413026 Re: Prints mirror image https://reprap.org/forum/read.php?4,411062,413026#msg-413026 Andrew Smith Reprappers Sun, 28 Sep 2014 18:31:59 -0400 https://reprap.org/forum/read.php?4,411062,412849#msg-412849 Re: Prints mirror image https://reprap.org/forum/read.php?4,411062,412849#msg-412849 tobig11 Reprappers Sun, 28 Sep 2014 11:36:25 -0400 https://reprap.org/forum/read.php?4,411062,411207#msg-411207 Re: Prints mirror image https://reprap.org/forum/read.php?4,411062,411207#msg-411207 jbernardis Reprappers Tue, 23 Sep 2014 16:43:51 -0400 https://reprap.org/forum/read.php?4,411062,411179#msg-411179 Re: Prints mirror image https://reprap.org/forum/read.php?4,411062,411179#msg-411179 Ed]]> tobig11 Reprappers Tue, 23 Sep 2014 15:22:14 -0400 https://reprap.org/forum/read.php?4,411062,411162#msg-411162 Re: Prints mirror image https://reprap.org/forum/read.php?4,411062,411162#msg-411162 jbernardis Reprappers Tue, 23 Sep 2014 14:50:02 -0400 https://reprap.org/forum/read.php?4,411062,411116#msg-411116 Re: Prints mirror image https://reprap.org/forum/read.php?4,411062,411116#msg-411116 dc42 Reprappers Tue, 23 Sep 2014 13:22:09 -0400 https://reprap.org/forum/read.php?4,411062,411062#msg-411062 Prints mirror image https://reprap.org/forum/read.php?4,411062,411062#msg-411062
Ed]]> tobig11 Reprappers Tue, 23 Sep 2014 11:14:22 -0400