SoliForum - 3D Printing Community — End stops prematurely triggered mid print

Re: End stops prematurely triggered mid print

null@example.com (Tin Falcon) — Tue, 16 Aug 2016 11:06:54 +0000

What carl said.
to explain in a little more detail end stops serve a couple purposes
1) homing switches to reference the home position automatically.
2) a safety switch to stop the machine if it tries to go beyond the limit of the bed.

As a safety device these limit switches end stops are wired normal closed . so they are triggered when the switch opens . but they also trigger if a contention comes loose or a wire breaks or get chaffed.

Problems with the main cable would account for the x being triggered . the y wires take there own path.

you are looking in the right direction wire problem most likely cause.
tin

Re: End stops prematurely triggered mid print

null@example.com (carl_m1968) — Tue, 16 Aug 2016 03:12:17 +0000

Endstop harnesses getting bad or the endstops themselves.

End stops prematurely triggered mid print

null@example.com (wingshafts) — Tue, 16 Aug 2016 02:22:51 +0000

Hi all.

I currently have a Solidoodle 4 that's 2 years old and it's been pretty good for the most part.

Just recently, I've tried to do a 24hr+ print and it ended up miserably failing. Halfway through the print, the model had a huge layer shift (> 40mm shift) and messed up the print altogether.

Having a look through the logs, I've noticed that both the X-axis and Y-axis end stops were triggered mid-print and continued to do so for a few layers. I've attached an excerpt of the problem in the file. This has been the first case I've had of a large layer shift since I updated the firmware last week.

Has anyone had this sort of problem before? I have a feeling that the cable that extends from the extruder might be the main cause.