# \[SOLVED\] Object centered in Slic3er, but not in pronterface **URL:** \ **Category:** Software\ **Created:** [February 10, 2014, 7:10pm UTC](https://forum.lulzbot.com/t/solved-object-centered-in-slic3er-but-not-in-pronterface/469 "2014-02-10T19:10:26Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![rosafari](https://avatars.discourse-cdn.com/v4/letter/r/7cd45c/32.png) [@rosafari](https://forum.lulzbot.com/u/rosafari)\ **Post date:** [February 10, 2014, 7:10pm UTC](https://forum.lulzbot.com/t/solved-object-centered-in-slic3er-but-not-in-pronterface/469/1 "2014-02-10T19:10:26Z")
Hi guys, I have my 1st model ready to print (I hope). When I open in Slic3r it looks OK and it is supposedly located in the center of the printing bed. I generate the G-code, but when I open the G-code file with Proterface, the model is in a corner instead of the center!!! What am I doing wrong? šŸ˜¢ you can see the G-code here: [https://www.dropbox.com/s/kodggw254jxo0vf/Gcode\_TOP\_RG-Medium-TAZ\_2.zip](https://www.dropbox.com/s/kodggw254jxo0vf/Gcode_TOP_RG-Medium-TAZ_2.zip) and the STL: [https://www.dropbox.com/s/9zg01fch2ek9x9n/STL\_TOP\_RG.zip](https://www.dropbox.com/s/9zg01fch2ek9x9n/STL_TOP_RG.zip) Slic3r 1.0.0RC2 Pronterface: Printrun 2013.10.19 ---
**Author:** ![Orias](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/orias/32/3_2.png) [@Orias](https://forum.lulzbot.com/u/Orias)\ **Post date:** [February 10, 2014, 7:16pm UTC](https://forum.lulzbot.com/t/solved-object-centered-in-slic3er-but-not-in-pronterface/469/2 "2014-02-10T19:16:22Z")
Does the object print offcenter? Are you referring to the gcode preview window in Pronterface? What are your bed dimensions in Pronterface (Settings \> Options \> Printer settings \> (Width, Depth, Height)). ---
**Author:** ![rosafari](https://avatars.discourse-cdn.com/v4/letter/r/7cd45c/32.png) [@rosafari](https://forum.lulzbot.com/u/rosafari)\ **Post date:** [February 10, 2014, 7:42pm UTC](https://forum.lulzbot.com/t/solved-object-centered-in-slic3er-but-not-in-pronterface/469/3 "2014-02-10T19:42:42Z")
Thanks for your reply! 1. Does the object print offcenter? I donā€™t know. In Pronterface: Printer (\> Printer settings \> General \> Z offset ) is set to 0 mm, is that what you mean? 2. Are you referring to the gcode preview window in Pronterface? Yes 3. What are your bed dimensions in Pronterface (Settings \> Options \> Printer settings \> (Width, Depth, Height)). 298 x 275 mm ---
**Author:** ![rosafari](https://avatars.discourse-cdn.com/v4/letter/r/7cd45c/32.png) [@rosafari](https://forum.lulzbot.com/u/rosafari)\ **Post date:** [February 10, 2014, 7:50pm UTC](https://forum.lulzbot.com/t/solved-object-centered-in-slic3er-but-not-in-pronterface/469/4 "2014-02-10T19:50:30Z")
1. What are your bed dimensions in Pronterface (Settings \> Options \> Printer settings \> (Width, Depth, Height)). Bed size x: 298 y:275 mm Print center x:149 y:138 Z offset 0 mm ---
**Author:** ![rosafari](https://avatars.discourse-cdn.com/v4/letter/r/7cd45c/32.png) [@rosafari](https://forum.lulzbot.com/u/rosafari)\ **Post date:** [February 10, 2014, 7:54pm UTC](https://forum.lulzbot.com/t/solved-object-centered-in-slic3er-but-not-in-pronterface/469/5 "2014-02-10T19:54:47Z")
OK this is weird, I decided to print anyway and it is actually printing in the center of the bed šŸ˜® It is a little confusing that I see it in a corner in Proterfaceā€¦ What does this mean? That the ā€œrealā€ location is always the one in Slic3r and then I should not pay attention to the location shown by Proterface? ---
**Author:** ![Orias](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/orias/32/3_2.png) [@Orias](https://forum.lulzbot.com/u/Orias)\ **Post date:** [February 10, 2014, 7:57pm UTC](https://forum.lulzbot.com/t/solved-object-centered-in-slic3er-but-not-in-pronterface/469/6 "2014-02-10T19:57:36Z")
Thatā€™s just related to how Pronterface is interpreting the bed dimensions. After your print finishes, try setting the bed dimensions in Pronterface to 100mmx100mm save, close and reopen Pronterface. Then go back and set the bed dimensions back to what you had previously, save and reopen. Then reload the gcode file, it should display correctly. ---
**Author:** ![rosafari](https://avatars.discourse-cdn.com/v4/letter/r/7cd45c/32.png) [@rosafari](https://forum.lulzbot.com/u/rosafari)\ **Post date:** [February 11, 2014, 2:43am UTC](https://forum.lulzbot.com/t/solved-object-centered-in-slic3er-but-not-in-pronterface/469/7 "2014-02-11T02:43:18Z")
Great, it works now!! Actually Pronterface for some reason had a ā€œbuiltā€ (= bed, I assume) size of 200 x 200, so I put the same numbers I have in Slic3er: x: 298 y:275 mm And it did the trick, thanks! ---
**Author:** ![2con](https://avatars.discourse-cdn.com/v4/letter/2/22d042/32.png) [@2con](https://forum.lulzbot.com/u/2con)\ **Post date:** [February 17, 2014, 7:24am UTC](https://forum.lulzbot.com/t/solved-object-centered-in-slic3er-but-not-in-pronterface/469/8 "2014-02-17T07:24:57Z")
I had the same issues. Pronterface always shows the gcode off the grid but infact it always prints centered.