do i need endstops I am building a prusa mendel i2 and and am currently doing the electronics. I am wondering if the endstops are completely necessary for the printer https://reprap.org/forum/read.php?4,218541,218541#msg-218541 Mon, 10 Aug 2026 12:35:47 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?4,218541,219564#msg-219564 Re: do i need endstops https://reprap.org/forum/read.php?4,218541,219564#msg-219564 ThanhTran Reprappers Tue, 18 Jun 2013 23:36:00 -0400 https://reprap.org/forum/read.php?4,218541,219563#msg-219563 Re: do i need endstops https://reprap.org/forum/read.php?4,218541,219563#msg-219563
I just set up the software do that it always prints from zero. And I just move the head to the middle of the table and center the print part at zero before I slice it and print it.
So my zero is always where the head is after I reset the board]]> ThanhTran Reprappers Tue, 18 Jun 2013 23:33:05 -0400 https://reprap.org/forum/read.php?4,218541,219000#msg-219000 Re: do i need endstops https://reprap.org/forum/read.php?4,218541,219000#msg-219000
Quote

Manually homing each axis before each print would seriously suck (please don't consider it).

While I have material for some 50 endstops lying around I still didn't build ones for my own printer (laziness). The trick to get away without endstops is simple: at the end of each print, move the print head to a known position. At the start of each print (more exactly: after resetting the controller) send a G92 with this known position.

Works beautifully. Also requires careful adjustment of acceleration and maximum speeds, of course. You should be able to run for weeks without step losses, which works perfectly fine here.]]> Traumflug Reprappers Mon, 17 Jun 2013 06:01:59 -0400 https://reprap.org/forum/read.php?4,218541,218951#msg-218951 Re: do i need endstops https://reprap.org/forum/read.php?4,218541,218951#msg-218951 maybe, but Z would involve re-leveling the print bed since it's impossible to turn both lead screws the exact same amount by hand. It may be a bit of extra complexity, but what do you expect when building a machine? If you want to buy an already made 3D printer, there are several that are probably just as cheap as the reprap and even if it costs a bit more, your time is still worth something. If you want to build one (and do it right), you need the endstop switches. This isn't the place to skimp if you're short on time or cash.]]> sheck626 Reprappers Mon, 17 Jun 2013 01:25:45 -0400 https://reprap.org/forum/read.php?4,218541,218644#msg-218644 Re: do i need endstops https://reprap.org/forum/read.php?4,218541,218644#msg-218644 isonoob Reprappers Sun, 16 Jun 2013 02:06:41 -0400 https://reprap.org/forum/read.php?4,218541,218604#msg-218604 Re: do i need endstops https://reprap.org/forum/read.php?4,218541,218604#msg-218604 www.thingiverse.com]

]]> Gerard Choinka Reprappers Sat, 15 Jun 2013 18:16:22 -0400 https://reprap.org/forum/read.php?4,218541,218595#msg-218595 Re: do i need endstops https://reprap.org/forum/read.php?4,218541,218595#msg-218595 chris33 Reprappers Sat, 15 Jun 2013 17:15:33 -0400 https://reprap.org/forum/read.php?4,218541,218570#msg-218570 Re: do i need endstops https://reprap.org/forum/read.php?4,218541,218570#msg-218570 which resets the coordinate system.]]> Polygonhell Reprappers Sat, 15 Jun 2013 15:36:15 -0400 https://reprap.org/forum/read.php?4,218541,218567#msg-218567 Re: do i need endstops https://reprap.org/forum/read.php?4,218541,218567#msg-218567 chris33 Reprappers Sat, 15 Jun 2013 15:19:50 -0400 https://reprap.org/forum/read.php?4,218541,218565#msg-218565 Re: do i need endstops https://reprap.org/forum/read.php?4,218541,218565#msg-218565 Without them you have to manually reference 0,0,0 using G92 every time you power on or reset the printer.
I ran my first printer without endstops, but I wouldn't do it again.]]> Polygonhell Reprappers Sat, 15 Jun 2013 15:15:34 -0400 https://reprap.org/forum/read.php?4,218541,218564#msg-218564 Re: do i need endstops https://reprap.org/forum/read.php?4,218541,218564#msg-218564 chris33 Reprappers Sat, 15 Jun 2013 15:12:33 -0400 https://reprap.org/forum/read.php?4,218541,218541#msg-218541 do i need endstops https://reprap.org/forum/read.php?4,218541,218541#msg-218541 saldurable Reprappers Sat, 15 Jun 2013 13:03:51 -0400