Prusa i3 Z axis problems help Hi all I have had my prusa about 3 months now(first printer). I'm pretty familiar with it and could now not do without it. My only gripe with it is that I am continually losing steps on one of the z axis motors. I have spent hours tweaking the pot on the driver with no solution. I can get probably 2-3 small prints before it has gone to far off level. The only solution I can see is running them separately and adding another end stop on the other side. Is this possible? What else would you suggest If it wasn't for this I the printer would be 100% reliable. s1310.photobucket.com mod_embed_images_loadimage('88f6e1e54f29ce573452978b0f99631a', '/forum/thumbcache/3c6/ac3/2e8/6c1/bee/6ef/74c/1b1/f83/425/9d_800x400.png', 'http://i1310.photobucket.com/albums/s643/luke_taylor3/20150508_195000_zpsyfjrh6zz.jpg', 'https://reprap.org/forum/addon.php?1,module=embed_images,check_scaling=1,url=http%3A%2F%2Fi1310.photobucket.com%2Falbums%2Fs643%2Fluke_taylor3%2F20150508_195000_zpsyfjrh6zz.jpg', 'http://s1310.photobucket.com/user/luke_taylor3/media/20150508_195000_zpsyfjrh6zz.jpg.html', 521086, 800, 400, 'Loading image ...', false); https://reprap.org/forum/read.php?1,521086,521086#msg-521086 Sun, 07 Jun 2026 13:38:37 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?1,521086,606299#msg-606299 Re: Prusa i3 Z axis problems help https://reprap.org/forum/read.php?1,521086,606299#msg-606299 JamesK General Thu, 07 Jan 2016 16:10:40 -0500 https://reprap.org/forum/read.php?1,521086,606295#msg-606295 Re: Prusa i3 Z axis problems help https://reprap.org/forum/read.php?1,521086,606295#msg-606295
Well yes, a spare motor could come in handy.]]> Chrismolloy General Thu, 07 Jan 2016 16:05:05 -0500 https://reprap.org/forum/read.php?1,521086,606232#msg-606232 Re: Prusa i3 Z axis problems help https://reprap.org/forum/read.php?1,521086,606232#msg-606232 Giantkiller General Thu, 07 Jan 2016 13:50:24 -0500 https://reprap.org/forum/read.php?1,521086,605982#msg-605982 Re: Prusa i3 Z axis problems help https://reprap.org/forum/read.php?1,521086,605982#msg-605982 JamesK General Thu, 07 Jan 2016 06:24:33 -0500 https://reprap.org/forum/read.php?1,521086,605863#msg-605863 Re: Prusa i3 Z axis problems help https://reprap.org/forum/read.php?1,521086,605863#msg-605863 Chrismolloy General Wed, 06 Jan 2016 23:59:48 -0500 https://reprap.org/forum/read.php?1,521086,605851#msg-605851 Re: Prusa i3 Z axis problems help https://reprap.org/forum/read.php?1,521086,605851#msg-605851 [forums.reprap.org]]]> elwood127 General Wed, 06 Jan 2016 22:17:21 -0500 https://reprap.org/forum/read.php?1,521086,605465#msg-605465 Re: Prusa i3 Z axis problems help https://reprap.org/forum/read.php?1,521086,605465#msg-605465
Thoughts....]]> Chrismolloy General Wed, 06 Jan 2016 07:01:15 -0500 https://reprap.org/forum/read.php?1,521086,524478#msg-524478 Re: Prusa i3 Z axis problems help https://reprap.org/forum/read.php?1,521086,524478#msg-524478 L4nce0 General Sun, 21 Jun 2015 20:09:42 -0400 https://reprap.org/forum/read.php?1,521086,524462#msg-524462 Re: Prusa i3 Z axis problems help https://reprap.org/forum/read.php?1,521086,524462#msg-524462 JamesK General Sun, 21 Jun 2015 19:22:58 -0400 https://reprap.org/forum/read.php?1,521086,524434#msg-524434 Re: Prusa i3 Z axis problems help https://reprap.org/forum/read.php?1,521086,524434#msg-524434 never get out of sync again. You'll never waste another minute trying to relaign the X axis. The guy who sold you the kit knew you'd be spending your time realigning the X axis, but by taking a short cut- using 2 motors instead of 1 motor with a belt, he was able to sell you the machine for $300 instead of $325 or $350.

I'll bet that if you had known what a PITA it was going to be to keep the X axis aligned, you'd have opted for a printer that used a single motor with a belt to drive both screws, even if it cost a few $ more.

Every dollar they take out turns into hours of your valuable time spent trying to make the thing work. Is your time really worth so little?]]> the_digital_dentist General Sun, 21 Jun 2015 17:43:03 -0400 https://reprap.org/forum/read.php?1,521086,524314#msg-524314 Re: Prusa i3 Z axis problems help https://reprap.org/forum/read.php?1,521086,524314#msg-524314 ltaylor88@aol.com General Sun, 21 Jun 2015 12:13:41 -0400 https://reprap.org/forum/read.php?1,521086,522536#msg-522536 Re: Prusa i3 Z axis problems help https://reprap.org/forum/read.php?1,521086,522536#msg-522536 I made some changes in my configuration.h file (presumeably you are using Marlin). I think the one that fixed it was reducing DEFAULT_MAX_FEEDRATE for the Z-axis. I think it was originally 25mm/sec (though I'm not 100% sure), I changed it to 3mm/sec!
I also changed a couple of other things:
DEFAULT_MAX_FEEDRATE set to 50 for the Z-axis (down from 100), and
DEFAULT_ACCELERATION set to 1500 down from 3000,
... but I think it was the change to DEFAULT_MAX_FEEDRATE that did it.

let us know how you go.]]> blabbersnitch General Wed, 17 Jun 2015 03:33:49 -0400 https://reprap.org/forum/read.php?1,521086,521695#msg-521695 Re: Prusa i3 Z axis problems help https://reprap.org/forum/read.php?1,521086,521695#msg-521695
thanks Nikki]]> Nikki81 General Mon, 15 Jun 2015 05:34:00 -0400 https://reprap.org/forum/read.php?1,521086,521683#msg-521683 Re: Prusa i3 Z axis problems help https://reprap.org/forum/read.php?1,521086,521683#msg-521683 ltaylor88@aol.com General Mon, 15 Jun 2015 04:46:59 -0400 https://reprap.org/forum/read.php?1,521086,521194#msg-521194 Re: Prusa i3 Z axis problems help https://reprap.org/forum/read.php?1,521086,521194#msg-521194 Plasteroid General Sat, 13 Jun 2015 13:08:40 -0400 https://reprap.org/forum/read.php?1,521086,521086#msg-521086 Prusa i3 Z axis problems help https://reprap.org/forum/read.php?1,521086,521086#msg-521086
The only solution I can see is running them separately and adding another end stop on the other side. Is this possible? What else would you suggest

If it wasn't for this I the printer would be 100% reliable.


]]> ltaylor88@aol.com General Sat, 13 Jun 2015 07:49:38 -0400