▁accept ▁d yes . ▁ ▁D ifferent ▁factors ▁may ▁be ▁more ▁significant ▁than ▁others ▁for ▁different ▁kn itting ▁projects , ▁so ▁there ▁is ▁no ▁one ▁" best " ▁y arn . ▁ ▁The ▁res ili ence ▁and ▁prop ens ity ▁to ▁( un ) tw ist ▁are ▁general ▁properties ▁that ▁affect ▁the ▁ease ▁of ▁hand - kn itting . ▁ ▁More ▁res il ient ▁y ar ns ▁are ▁more ▁forg iving ▁of ▁irregular ities ▁in ▁t ension ; ▁highly ▁tw isted ▁y ar ns ▁are ▁sometimes ▁difficult ▁to ▁kn it , ▁whereas ▁un tw isting ▁y ar ns ▁can ▁lead ▁to ▁split ▁st itch es , ▁in ▁which ▁not ▁all ▁the ▁y arn ▁is ▁kn itted ▁into ▁a ▁st itch . ▁ ▁A ▁key ▁factor ▁in ▁kn itting ▁is ▁st itch ▁definition , ▁ ▁corresponding ▁to ▁how ▁well ▁complicated ▁st itch ▁patterns ▁can ▁be ▁seen ▁when ▁made ▁from ▁a ▁given ▁y arn . ▁ ▁Sm ooth , ▁highly ▁sp un ▁y ar ns ▁are ▁best ▁for ▁showing ▁off ▁st itch ▁patterns ; ▁at ▁the ▁other ▁extreme , ▁very ▁f uz zy ▁y ar ns ▁or ▁e y el ash ▁y ar ns ▁have ▁poor ▁st itch ▁definition , ▁and ▁any ▁complicated ▁st itch ▁pattern ▁would ▁be ▁invisible . ▁ ▁Sometimes ▁un con vent ional ▁materials ▁are ▁like ▁paper , ▁ro pe , ▁flexible ▁metal ▁wire , ▁and ▁pl astic ▁tub ing ▁are ▁used ▁in ▁place ▁of ▁y arn . ▁ ▁Tools ▁The ▁process ▁of ▁kn itting ▁has ▁three ▁basic ▁tasks : ▁( 1