For Woolens Including Pants
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Try using a press cloth, easily found in sewing stores, or on Fleabay. In a pinch one can make one from clean heavy muslin.
One places the press cloth over the area being pressed, then mists water over the press cloth, followed by pressing with iron or press. This prevents too much moisture from reaching the wool (very bad), and also protects fabrics.
When pressing wool and woolens, always remember not to lower the press head all the way down, but stopping just shy of reaching the surface (half pressure). Some presses have a location marked/explain how one does this. For delicates, woolens and such you don't want full pressure, but allow the steam/moisture to do the work.
Steam Presses:
Again, unless they are the commercial variety as mentioned above, are rarely worth the effort. Remember also commercial laundries/press shops get their steam from boilers that produce 50psi and above, which is pretty dry steam. The moist steam from home ironing appliances is going to create a soggy mess usually, causing you more problems than solving.
L.