A comprehensive list of tags for start and end gcodes?

For the life of me I cant find a list of all the expansion tags that slic3r supports. I am talking about things like these:

[first_layer_bed_temperature]
[first_layer_temperature]

Since I switched over to PETG filiment I have been having an issue with it leaking all over the place, so I want the hot end to wait at half the target temperature while its doing the other things, then go to full temperature at the last moment. I wanted to put a command like the following in my gcode for this:

;Have hot end go to half of its target temperature to save time and prevent leaking while it does other things.
M109 R[first_layer_temperature]/2

Edited 1 time(s). Last edit at 03/24/2016 03:08PM by GreatGrizzly.

Hi,

I believe that all the variables are included together with their values in generated gcode at the end of the file.

Hope this helps

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Reality is in fact virtual.

Yes, all the variables and the values you were using at the time of the slicing are commented at the bottom of the generated g-code file. The only other variables are applicable to the layer change g-codes, where you can use [layer_num] and [layer_z], and the tool change g-code, where you can use [previous_extruder] and [next_extruder].

Slic3r does not at this time support doing math with these variables, as far as I know. You can hard-code specific values into the start g-code if you remember to change them for different materials or, if you are running a firmware that supports it, you can set different active and standby temperatures for the extruder and do initial setup in standby.