Assertion: sewing machine | /r/HasProperty | needed
Facets:
Source sentences:
text: However, you can't make a buttonhole or insert a zipper with it, which is usually needed for making pants and anything that has buttons and zippers, so this is where a sewing machine is needed.
text: When your sewing machine exhibits perfectly balanced stitches, it means you have perfect tension, and there is no need to tamper with it!