| 摘要 |
<p>Iron includes a handle fitted with a guide tube along which was in the form of rods, wire or powder is fed onto an electrically heated and interchangeable bit similar to a bit used in a solder iron. Tube is pref. round and ends just behind the bit; and the tube pref. has a slot via which a human finger or a feed roller can move the wax towards or away from the bit. Rapid mfr. of wax patterns or models, where different types of wax can easily be fed through the iron is obtd.</p> |
