Start printing when (extruder) temperature is reached

I have seen a post a while back about this (I think) but for the life of me I can't find it anymore. What I want to achieve is that the printer starts printing if the extruder temperature is reached. (for the first time) My extruder temp alway overshoots a couple of degrees (dispite PID tuning) when heating up. Then it needs to come down a couple of degreed and only starts printing when it (slowly) reaches target temp (approaching from the top, so to say). I would like to have it start printing (or prime-blobbing) when it first reaches the target temp... I don't mind the overshoot in the Prime-blobbing phase... anybody any ideas on how to achieve this?
2 Replies
fascinating-indigo
fascinating-indigo14mo ago
I have not done any changes to macros but if you look at the macro START_PRINT you will find that gcode M109 is used to heat up and wait for temperature to stabilize. Here is a guide how you eventually could change this: https://ellis3dp.com/Print-Tuning-Guide/articles/useful_macros/replace_m109_m190_with_temp_wait.html So I would think you would have to define your alternative START_PRINT macro and/or M109 macro in your printer.cfg to override the standard. Maybe you give it a try or the more experienced people here can help on this basis knowledge.
Ellis’ Print Tuning Guide
Replace M109/M190 With TEMPERATURE_WAIT
Ellis’ Print Tuning Guide
Want results from more Discord servers?
Add your server