I bought a MAPP/Oxy kit to do some brazing on hi-ten steel, no joints or anything fancy, just for braze-ons and practice. Sorry if this is a really dumb question but I don't have anywhere I can braze indoors (I assume that is a bad idea unless you have ventilation or a huge area). Anyways the temps outside are around -5c - 0c. Should I bother trying to braze or wait till it warm up? I just don't want to make it harder for myself or waste the oxygen bottles.