If you use it in the cold, it needs a little insulation underneath. Trangia sells a plastic disc gizmo for that purose that doubles as a screen to drain pasta, etc. You can warm the stove up faster by using a pan (tin foil, etc) under it and light a little puddle of alcohol to get it all going.
Dale,
Yes everything I have heard says you want to warm the unit/keep it away from cold surfaces.
Without buying any more gadgets, or pads, find a rock or a dirt spot (Fire hazard - beware) and dribble a little fuel, light it, then place the unit right on/next to the ground flame. This should warm and light the unit itself.
The other "standard" way is to dribble some fuel on the outside wall, the added effect beyond warming the outer wall, it becomes easier to light, as you only need to hold the flame to the outside wall, instead of over-the-top.
Lastly, a lot of tree-hugger hikers, or those in areas prone to fire, will simply place the device inside their coat, and warm it up slightly with body heat. It doesn't take much warmth to get them fired right up.
I have read , many times about poor performance or lack of lighting in Cold Temps, which is why I tried it, and posted here. Nothing like experimentation.
There is a lot of information floating around cyber-space, so one I a while it's nice to verify it.
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I "think" it would take some really drastic cold and maybe high elevation, snow, ice, wind and just plain horrid conditions to cause an absolute failure to light.
We are supposed to get some nights down in the teens° F , so, I'll try it again, to see if there is a threshold where the stove balks on proper ignition.