Mendlemax NOT printing Circles. Hi there everyone. I have just completed my Mendlemax its actually most of the components from the Ultibots Ultimax kit. Now i have tried everything to get it to print near to perfect circles and it just wont. I have made sure all the belts are tight and of equal tightness there is no backlash that i can tell and the steps per mm are as bang on. In fact i have ended up going back to the original steps per mm that i calculated using the gt2 belt calculator. But its still printing oval circles and now im at a loss. My theory is that perhaps the belts i got are not quite right i know that the x axis has a slight twist in it that wont pull out perhaps that is it i dont know. As the printer is finished and prints amazingly well apart from the circles. Im open to any ideas. Bed is level to within .01 of a mm. Although there is a small dip in the glass of about .1 on one side just off center im getting new glass which should fix that. i keep check and re-checking measurements but im lost now. Here are a couple of photos. mod_embed_images_loadimage('df11fb5711ee7e5a38285c19997a7d69', 'https://reprap.org/forum/addon.php?41,module=embed_images,url=https%3A%2F%2Fdrive.google.com%2Ffile%2Fd%2F0B4MWxzcs_L8RcTRwY2RtSWFMbzA%2Fview%3Fusp%3Dsharing', 'https://drive.google.com/file/d/0B4MWxzcs_L8RcTRwY2RtSWFMbzA/view?usp=sharing', 'https://reprap.org/forum/addon.php?41,module=embed_images,check_scaling=1,url=https%3A%2F%2Fdrive.google.com%2Ffile%2Fd%2F0B4MWxzcs_L8RcTRwY2RtSWFMbzA%2Fview%3Fusp%3Dsharing', '', 508029, 800, 400, 'Loading image ...', false); [drive.google.com] https://reprap.org/forum/read.php?41,508029,508029#msg-508029 Thu, 10 Sep 2026 09:45:48 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?41,508029,514406#msg-514406 Re: Mendlemax NOT printing Circles. https://reprap.org/forum/read.php?41,508029,514406#msg-514406 Johnonz New Zealand RepRap User Group Wed, 27 May 2015 16:35:52 -0400 https://reprap.org/forum/read.php?41,508029,509455#msg-509455 Re: Mendlemax NOT printing Circles. https://reprap.org/forum/read.php?41,508029,509455#msg-509455 Johnonz New Zealand RepRap User Group Sat, 16 May 2015 04:46:49 -0400 https://reprap.org/forum/read.php?41,508029,509445#msg-509445 Re: Mendlemax NOT printing Circles. https://reprap.org/forum/read.php?41,508029,509445#msg-509445 frankvdh New Zealand RepRap User Group Sat, 16 May 2015 04:18:18 -0400 https://reprap.org/forum/read.php?41,508029,509404#msg-509404 Re: Mendlemax NOT printing Circles. https://reprap.org/forum/read.php?41,508029,509404#msg-509404 Johnonz New Zealand RepRap User Group Fri, 15 May 2015 21:54:05 -0400 https://reprap.org/forum/read.php?41,508029,509392#msg-509392 Re: Mendlemax NOT printing Circles. https://reprap.org/forum/read.php?41,508029,509392#msg-509392 n.glasson New Zealand RepRap User Group Fri, 15 May 2015 20:30:15 -0400 https://reprap.org/forum/read.php?41,508029,508403#msg-508403 Re: Mendlemax NOT printing Circles. https://reprap.org/forum/read.php?41,508029,508403#msg-508403 Johnonz New Zealand RepRap User Group Wed, 13 May 2015 03:06:04 -0400 https://reprap.org/forum/read.php?41,508029,508344#msg-508344 Re: Mendlemax NOT printing Circles. https://reprap.org/forum/read.php?41,508029,508344#msg-508344 Johnonz New Zealand RepRap User Group Tue, 12 May 2015 19:36:32 -0400 https://reprap.org/forum/read.php?41,508029,508316#msg-508316 Re: Mendlemax NOT printing Circles. https://reprap.org/forum/read.php?41,508029,508316#msg-508316
When calibrating a machine I prefer to fine tune final steps per mm of all axes and the extruder by trial and error. I use a vernier caliper to measure the travel and scale the steps per mm accordingly.]]> n.glasson New Zealand RepRap User Group Tue, 12 May 2015 17:35:29 -0400 https://reprap.org/forum/read.php?41,508029,508077#msg-508077 Re: Mendlemax NOT printing Circles. https://reprap.org/forum/read.php?41,508029,508077#msg-508077 Johnonz New Zealand RepRap User Group Tue, 12 May 2015 07:30:56 -0400 https://reprap.org/forum/read.php?41,508029,508029#msg-508029 Mendlemax NOT printing Circles. https://reprap.org/forum/read.php?41,508029,508029#msg-508029
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