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porlock

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Posts posted by porlock

  1. I don't know the answer to your questions but I do know that for some materials you want to print the first layer extra hot.  There are lots of tradeoffs on temperature.  If you print hotter the bottom layer will stick better.  I suspect this is the purpose of the initial temp.

    If temperature is cooler the material is thicker like mortar and stays better where the nozzle puts it.  If temp is hotter it flows more like honey and you get droopy errors and stringing and leakage.  If you print hotter you can print faster.  For ABS if you don't print hot enough you get bad layer adhesion from one layer to the next.  If you print too hot you get clogs with ABS.

    Also with dual head printers while one nozzle is printing the other cools down so you have these other temperature settings - something like "idle" temp and seconds before switching to start heating up the idle nozzle.

    I think You miss understood :-) please look at the material pane in Cura there are 5 temp settings

    1) Default temp - It seams that it is only for reference do not affect anything directly, it have no sens for me also.

    2) Print temp - that is understandable

    3) Print temp 1st layer - that is understandable too, and this is what You describing.

    4) Initial print temp - this is one of my initial question, what it this do ?

    5) final print temp - this is second of my initial question.

  2. I use an old Cura 14.x and there was a setting called initial layer width, it was available in advanced tab, Now i change my soft to Cura 2.5 and i cant find it. I see setting to change width of top/bottom layers at the same time, but i do not want top layer wider. I used this setting better bed adhesion, last layer have pretty good stick and does not need to be wider.

  3. I do not understand this temps stings in new cura, can someone pls explain it to me:

     

    • "Initial temp" If i set 1st layer temp to 200, initial does do not nothing it start printing when reach 200, so this settings is pointless ? And why someone wants to start print before desired temp is reached ?
    • "Final printing temp" why someone should want to lower the final print temp ? What is a sens of this settings.

     

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