How about quartz which would create one spark in a period of time depending on its temp.?
Ps.Sorry for my bad english im from germany

cooldaddy96
+1

what about making a button in the '''Special'' Category to rub the elements like C-4, Wood or something combustible. If you rub (RUB) than the temperature higher and it cans burn

samir
just use heat

Hero1000
+1

it would make thing alot eaisier and faster

i didnt see anything in crackers mod ive used it heaps

I don't know if this has been requested before or not because i will not read trough 93 pages but here it goes...

1) The ability to set a specific material with the max temp/lowest temp by using the Fill tool or whatever its called ( the one which adds the material selected in all the free space), but only to the material you click.

2) A option, button or something that allows you to set a exact temp for a Specific material that you selected using a Slider or even better a interface like the one for Signs in which you can set your desired temp.

This would make controlling temps a lot easier.

Adamantium, (an indestructible metal) which can come in powder, liquid or the actual indestructible form.
It can conduct & Reflect/Refract.

Snitzi
+1