Printed Cubes bowed in. So I've recently noticed that when I print things with flat sides like a cube they curve in slightly making the corners of the cube not 90 degrees. Any idea what causes things like this? https://reprap.org/forum/read.php?262,310182,310182#msg-310182 Mon, 16 Mar 2026 08:31:56 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?262,310182,329351#msg-329351 Re: Printed Cubes bowed in. https://reprap.org/forum/read.php?262,310182,329351#msg-329351

Thanks for everyone's help! My printer hit a milestone the other day by successfully printing out a 40 tooth Lego Technic gear (without supports which was an even better feat for the printer) that not only worked with the Lego Technic plus shaped rods but actually meshes well with a worm gear. It is currently acting as a replacement part for my Throwbot Jungle. :)]]> jaeg Printing Mon, 24 Mar 2014 09:40:01 -0400 https://reprap.org/forum/read.php?262,310182,322921#msg-322921 Re: Printed Cubes bowed in. https://reprap.org/forum/read.php?262,310182,322921#msg-322921 jaeg Printing Mon, 10 Mar 2014 21:11:22 -0400 https://reprap.org/forum/read.php?262,310182,319920#msg-319920 Re: Printed Cubes bowed in. https://reprap.org/forum/read.php?262,310182,319920#msg-319920 1. The springs are weak enough to cause the bed to shift
2. Maybe your acceleration is too slow, or too fast.
3. Hotend is loose enough to shift.
4.firmware problem, reload the firmware, i would build a new configuration.h file (assuming it's marlin)
All of those are long shots, but it's my guess.]]> cat.farmer Printing Wed, 05 Mar 2014 00:16:40 -0500 https://reprap.org/forum/read.php?262,310182,319904#msg-319904 Re: Printed Cubes bowed in. https://reprap.org/forum/read.php?262,310182,319904#msg-319904 www.makerfarm.com]

The top portion of the bed is a piece of thin plywood with back support of balsa to make it sturdier suspended on springs. The glass is held to the top of this by binder clips.]]> jaeg Printing Tue, 04 Mar 2014 22:31:08 -0500 https://reprap.org/forum/read.php?262,310182,319898#msg-319898 Re: Printed Cubes bowed in. https://reprap.org/forum/read.php?262,310182,319898#msg-319898 cat.farmer Printing Tue, 04 Mar 2014 22:18:11 -0500 https://reprap.org/forum/read.php?262,310182,319874#msg-319874 Re: Printed Cubes bowed in. https://reprap.org/forum/read.php?262,310182,319874#msg-319874

EDIT: Actually on second thought I'm not ruling the frame out just yet. Since it's at a slower speed it's possible that it's just printing straighter due to less force behind all that moving mass.


Edit again:
Just did a full print at 70% the speed. The edges are no longer bowed in but the corners are still a little exaggerated.]]> jaeg Printing Tue, 04 Mar 2014 20:21:15 -0500 https://reprap.org/forum/read.php?262,310182,319869#msg-319869 Re: Printed Cubes bowed in. https://reprap.org/forum/read.php?262,310182,319869#msg-319869 cat.farmer Printing Tue, 04 Mar 2014 19:47:54 -0500 https://reprap.org/forum/read.php?262,310182,318987#msg-318987 Re: Printed Cubes bowed in. https://reprap.org/forum/read.php?262,310182,318987#msg-318987
[www.reddit.com]]]> jaeg Printing Mon, 03 Mar 2014 08:50:48 -0500 https://reprap.org/forum/read.php?262,310182,315340#msg-315340 Re: Printed Cubes bowed in. https://reprap.org/forum/read.php?262,310182,315340#msg-315340
I am however still getting fat corners.]]> jaeg Printing Mon, 24 Feb 2014 09:15:21 -0500 https://reprap.org/forum/read.php?262,310182,314543#msg-314543 Re: Printed Cubes bowed in. https://reprap.org/forum/read.php?262,310182,314543#msg-314543
Correction. It doesn't do it as bad with Slic3r it's still happening but more so on the top than the bottom.]]> jaeg Printing Sat, 22 Feb 2014 12:56:06 -0500 https://reprap.org/forum/read.php?262,310182,312552#msg-312552 Re: Printed Cubes bowed in. https://reprap.org/forum/read.php?262,310182,312552#msg-312552
I'm currently using Cura but I'll switch back to Slic3r to see if it's doing it now as well. (I don't remember Slic3r doing it but I'm just now noticing it happening)]]> jaeg Printing Tue, 18 Feb 2014 10:36:50 -0500 https://reprap.org/forum/read.php?262,310182,312548#msg-312548 Re: Printed Cubes bowed in. https://reprap.org/forum/read.php?262,310182,312548#msg-312548
Quote
jaeg
I'm still messing around with this. I've tightened the belts further but so far haven't had much luck.


EDIT:

Would a XY Jerk setting of 10 cause this?

I'm wild guessing that there is more material deposited at the corners that caused the sides to look bowed in. Have you tried measuring the corners or the sides? You can try other slicer too and see if the problem goes away.]]> chngyian Printing Tue, 18 Feb 2014 10:30:40 -0500 https://reprap.org/forum/read.php?262,310182,312084#msg-312084 Re: Printed Cubes bowed in. https://reprap.org/forum/read.php?262,310182,312084#msg-312084

EDIT:

Would a XY Jerk setting of 10 cause this?]]> jaeg Printing Mon, 17 Feb 2014 12:12:02 -0500 https://reprap.org/forum/read.php?262,310182,310699#msg-310699 Re: Printed Cubes bowed in. https://reprap.org/forum/read.php?262,310182,310699#msg-310699 jaeg Printing Thu, 13 Feb 2014 22:07:20 -0500 https://reprap.org/forum/read.php?262,310182,310640#msg-310640 Re: Printed Cubes bowed in. https://reprap.org/forum/read.php?262,310182,310640#msg-310640 KingRahl Printing Thu, 13 Feb 2014 17:52:28 -0500 https://reprap.org/forum/read.php?262,310182,310612#msg-310612 Re: Printed Cubes bowed in. https://reprap.org/forum/read.php?262,310182,310612#msg-310612
Could that be something? Maybe someone else can contribute some valuable insight?]]> Ohmarinus Printing Thu, 13 Feb 2014 16:39:11 -0500 https://reprap.org/forum/read.php?262,310182,310433#msg-310433 Re: Printed Cubes bowed in. https://reprap.org/forum/read.php?262,310182,310433#msg-310433
As it is moving in from one corner to the next it appears to bow inwards making a parabola between the two corners.]]> jaeg Printing Thu, 13 Feb 2014 09:48:39 -0500 https://reprap.org/forum/read.php?262,310182,310318#msg-310318 Re: Printed Cubes bowed in. https://reprap.org/forum/read.php?262,310182,310318#msg-310318
Not straight corners can mean many things, loose belts, too fast printing because the mass of the x-carriage has to slow down and not make a sharp corner, but it can also be that it's extruding more than it should be. That will make the corners also less sharp and detailed.]]> Ohmarinus Printing Thu, 13 Feb 2014 04:14:39 -0500 https://reprap.org/forum/read.php?262,310182,310182#msg-310182 Printed Cubes bowed in. https://reprap.org/forum/read.php?262,310182,310182#msg-310182

Any idea what causes things like this?]]> jaeg Printing Wed, 12 Feb 2014 17:25:50 -0500