BLTouch and enclosures I've empirically determined that BLTouch (and 3DTouch) hall-effect leveling sensors become erratic after about 16 to 50 hours of printing in an enclosure heated to 50c. Of five purchased sensors (3 BL-touch, two #D-touch), four are no longer usable: One died (could no longer detect it's magnet at all when it deployed and retracted, so a bit more than 'erratic'); Three lost repeatability, such that repeated back-to-back autohome/Z probe offset measurement cycles yielded about .25mm variation; My last still-working probe (a BL-Touch) is being restricted to PLA and PETG, and an open enclosure. Now, this is just anecdotal, and a small sample size, but there is perhaps more than just correlation. I'm running them on an SKR-1.4 with Marlin 20.5.3, Ender3 in a repurposed CubePro enclosure with the electronics moved outside (except the sensor). I'm printing nylon at 260c, bed at 110c. I crack the lid with a servo to vent the enclosure when temp goes higher than 5 degrees over setpoint. Am waiting for inductive sensors. https://reprap.org/forum/read.php?1,873463,873463#msg-873463 Fri, 04 Sep 2026 10:33:07 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?1,873463,873463#msg-873463 BLTouch and enclosures https://reprap.org/forum/read.php?1,873463,873463#msg-873463 Of five purchased sensors (3 BL-touch, two #D-touch), four are no longer usable:
  • One died (could no longer detect it's magnet at all when it deployed and retracted, so a bit more than 'erratic');
  • Three lost repeatability, such that repeated back-to-back autohome/Z probe offset measurement cycles yielded about .25mm variation;
My last still-working probe (a BL-Touch) is being restricted to PLA and PETG, and an open enclosure.

Now, this is just anecdotal, and a small sample size, but there is perhaps more than just correlation.

I'm running them on an SKR-1.4 with Marlin 20.5.3, Ender3 in a repurposed CubePro enclosure with the electronics moved outside (except the sensor).

I'm printing nylon at 260c, bed at 110c. I crack the lid with a servo to vent the enclosure when temp goes higher than 5 degrees over setpoint.

Am waiting for inductive sensors.]]> wallaceowen General Sat, 06 Jun 2020 14:28:38 -0400