Test the SL, SE, HS and HS+ toolheads on printer.
Initial thoughts on install:
The Cover plates screws are different, and will defiantly be better to have all matching. The top cover is kind of in the way when removing dual and adding the SL, and looks awkward just hanging out once the SL was installed.
We will need very clear documentation on changing out the tool head.. as it wasn't easy.
based on struggles I saw - removing the cover might be recommended for single tool heads. If so the screw hinge should be swapped to the other side to better accommodate right-handed users.
Also we may need to include extra ptfe tube clips to attach to the single extruder in order to operate the filament run-out sensor
Tested on Quiver 19
SE on Quiver - Barley touching front left corner, it will not hit nozzle tip. It hits the slanted portion when lowering in Z
SL on Quiver - Misses front left corner completely during g29 probe, cannot get print
HS+ on quiver - still close to missing front left washer
HS on quiver - Misses front left washer, makes contact on side of nozzle
Testing on Quiver 4 with SE tool head on 184.108.40.206 firmware
Initial Install: Fairly straightforward overall, but the cover plate does get in the way of the filament. Moving it up out of the way takes care of that.
Calibration: Going into the Advanced settings on the printer, the Nozzle offset is grayed out, but the Axis backlash is able to be selected. Selecting that option will start the process, but it fails each time. The tool head misses the cube on the fourth touch due to a y-axis movement, which throws off the rest of the calibration process.
Printing: Performed a print via the USB stick (Benchy, ChromaStrand ABS, Standard). The leveling process went just fine, touching off on all 4 corners just fine. Initial layer was a bit low, and adjusting the z-offset did not change the first layer during the print. Filament runout sensor would report a false positive when the print started if the tool head had to wait for the bed to heat for more than a minute. Also gave a false positive if the filament guide was resting on the cover plate and not on the tool head. Aside from that, the Benchy came out well.
Put a HS tool head on Quiver 16
Flashing firmware is still a pain. Used 220.127.116.11 for HighStrength
Confusing which plug you need to attach to, but that should be resolved in directions.
Auto calibration was greyed out, which I understand to be purposeful, because auto calibration is setting the difference between nozzles and we only have one on this tool head.
Ran auto backlash calibration: failed spectacularly. Nozzle missed left side of cube entirely and only triggered when it ran into the bed washer. All moves to locate the cube were badly off, but the left side of the cube was the worst since it missed entirely. Relocating to cube to establish Z backlash caused the nozzle to do a very slow crash into the bed. We will probably need new calibration code specific to single extruder tool heads.
I'm pretty sure you dont need to run backlash calibration. I think i was more to see your values since backlash still applies. If you run backlash calibration, its running the same calibration that the dual would run, thus its using the dual nozzle positions... I believe
@marcio am I correct with this?
I was also able to test the SL on the Quiver today. Very similar to the SE tool head in how it ran in just about every way. Also tried the backlash calibration and it failed in the same way as both the SE and HS tool heads. Ran a Benchy (scaled 50%) on High Detail with nGen and it came out really well.
Dual nozzle calibration isn't needed, obviously, but backlash calibration is probably still useful. This isn't something that was tested with single toolheads, so that is probably why it is crash.
Once calibration is performed with a dual-toolhead, it should not need to be done again with the single toolhead, as the FW will simply use the backlash values from the dual-toolhead. One option might be to simply disable that option on the single toolhead FW. Thoughts?
@karrad: Okay, so "impossible" was a bit exaggerated. The toolhead makes it just *barely* above the cube. Because of this, on my machine at least, it can measure backlash against the rear of the cube. I enabled it for the single toolheads, as an experiment, but whether this is usable on all printers remains to be seen.
Firmware .77 contains many small tweaks for the single toolheads (and to a lesser extent, for the dual toolhead). We should begin testing .77 out.