SEWING TIP OF THE DAY
(Maybe you've heard this, but just in case you haven't)
Metal hem guides get too hot for fingers when pressing up a hem. To eliminate this problem, purchase a silicone pot holder and cut in per-measured strips (1/2", 1", 1 1/2", 2" and so on) to use as hem guides. One pot holder is usually large enough to yield all the standard hem sizes we use.
The iron will not harm the silicone, and they always remain cool to the touch.