It seems like the thermistor wires on the heater are being squished by everything. Once you torque the glass down there isn't any wiggle to the wires and if you look under the bed you can see them being squished. Also once you take the heater off you can see indentations from the wires in the heater. This may be causing the left side to be more squished too still.
- Mentioned In
- T10208: Z offsets closer to a positive number suddenly
rTAZREDGUM5f0c299e16ce: Updates flexy Bed Standoff to 5.11mm height, adds production gcode for PP…
rTAZREDGUM169a2f782189: Updates Bed Corner model files to v2.2.4, adds production gcode for PP-GP0477…
rTAZQUIVER01b98cbe8dd2: Updates bed standoff models to 5.11mm height, adds production gcode for PP…
rTAZQUIVER3dffd5d8db6b: Updates bed corner models to v2.2.4, adds production gcode for PP-GP0477 Bed…
rCLUSTERTESTe49e9bf71abf: Adds production gcode for PP-GP0478 Bed Standoff 5.11mm T10002 T9947 T9920
rCLUSTERTESTd0f08ed8fcb0: Adds production gcode for PP-GP0477 Bed Corner v2.2.4 T9997 T9947 T9909 T9920
- Mentioned Here
- T9909: X-Axis and Y-Axis not level
@robert this is the same bed setup as taz pro so the issue is present on both machines. There is a lump in the silicon patch where the heater wires go in and this is where the thermistor wires can get smashed. If you route the thermistor wires around the side of the lump you should be able to tighten everything down without it smashing the thermistor wires
@tutley So I tried it just now and its pretty difficult any way because if you route the wires on the idler side of the hump, you run into the wiper mount, and if you route them on the motor side of the hump the run into the cable cover. Plus its just difficult in general to keep those wires on the side of the hump when laying the bed down.
Right now we're looking at raising the bed surface 1.11mm to make room for those wires. This will require changing bed spacers to these: https://www.mcmaster.com/92320a763 and modifying the flexy corners.
This would accomplish similar to what was proposed in T9909 so the plan is to test on Mini 2 also. There is a little of the bed mount fasteners sticking out the bottom of the bed plate so hopefully no new hardware will be needed there.
i have installed these on my quiver and if install the bed so the thermistor wires come straight out the side, you can shine a light from the backside of the bed to the front and you can see the light under the wires, so the wires are not being compressed at all and have a bit of a gap.
These parts combined with the 7/16 spacers should alleviate any issues here. This should give a more consistent first layer as well.
I am printing another set to install on my mini 2 and this should alleviate T9909
I measured some of the bed heaters we have in production to get a range of thicknesses for them.
|w/thermistor wires||w/o thermistor wires|