Mark 2 Modification and Print problems

[bob-hepple 59]

following on from a previous thread about the calibration print (not printing) I have noticed the temp reading for both extruders are going up and down by 10 deg since the second head was added so if I set the temp say to 160 (low I know) the temp will drift up to 168 and down to 154 didn't notice this before when the single head was on,, any help appreciated.

[conny_g 251]

When switching heads the unused one goes to stand-by temperature, the active is heating up to print temperature. Is it that what you mean?

[bob-hepple 59]

conny_g

 

thanks for the reply, yes I understand the stand by temp,  I'm on about printing temp the 168 was  an example, I set left head at this temp and watched to see if stable then the right head..   if I'm printing at 205 then the temp goes up and down on both heads(when printing and when in stand by,  the right one in particular, I seem not to be able to get the calibration code to print (print not sticking even when bed adjusted)  and as said the temp readings for both heads goes up and down. I have prepared a dual colour print in cura (I usually use S3D) so that was a learning curve,,, I am going to run it later today and see what happens...