HI, I just setup the chameleon on my 400x400 corxy with an eva 3 tool head, Orbiter V2, Rapido and CHT 0.6 nozzle, very much a Rat Rig style setup and I am unsure on the tip shaping for the Rapido. I watched chris's videos with the prusa mini and he shows the stages to move the filament into the cool zone and I was not sure what part of the rapido would be the cool zone.
I also tried a klipper macro that works really well when testing 10 + times with just a filament load and tip shape unload directly into the orbiter , but as soon as I add this to the filament change code it failed 1 in 4 times getting stuck at the exit of the Orbiter
Another question I had is the CHT going to mess with the ramming and tip shape ?
Apart from the tip shape problems I have everything else setup and working ok with klipper and orca slicer. One thing I found is M109 R didn't work and I had to change to M109 S and this was ok for heating and cooling in klipper. I do get an error with unknown T0 command, but it does not stop it from working.
I decided to go with a filament cutter after finding this EVA 3 setup, it's installed and the first test was perfect. I am working on filament rewinders using bambo AMS parts and my own code so will keep you up to date on that. It's using the Hydra mod files and the front loader just needs power to the motor thats it !
try this code instead of tip shaping: ; MY TIP SHAPING
G0 E10 F500 ; push out molten filament
G0 E-25 F3000 ; retract quickly to cold zone
G4 P10000 ; wait to cool 10s
G0 E-70 F3000 ; retract quickly all the way
just spent a few hours trying to tune in the tip shape and just as I think I have it, it pulls out a nice long tail.
The last 5 are all the same setting based on the K1 post I found.
In my experience with my CHT (also 0.6, but on a Mosquito), tip shaping is highly dependent on temperature and difficult to get working right. I was able to get semi-acceptable tips with this: https://www.3dchameleon.com/forum/your-3d-chameleon-creations/simple-quick-tip-shaping, with some temperature tuning. The MK4 Auto 3DClippy was just released, so that should eliminate the need for perfect tip shaping. Also, because you're using Klipper, if you have a filament sensor, I made https://github.com/3DCoded/3dchameleon-klipper to utilize the filament sensor to detect failed unloads and loads. It's still a WIP, but any feedback would be appreciated if you decide to try that. Or, you could just make these macros (they just print Tx) to get rid of the unknown T0 command warnings:
[gcode_macro T0] gcode: M117 T0 [gcode_macro T1] gcode: M117 T1 [gcode_macro T2] gcode: M117 T2 [gcode_macro T3] gcode: M117 T3Make sure you're not dual processing it... that is, that the slicer isn't also doing tip shaping... that long string indicates that it's not getting to the tip and/or the temperature is too high.
Bill