Ngenxa ye-angle ye-helix, i-angle yokusika i-rake ye-tap iya kwanda njengoko i-angle ye-helix ikhula.Amava asixelela: Ukulungisa isinyithi, i-engile ye-helix kufuneka ibencinci, ngokubanzi malunga ne-30 degrees, ukuqinisekisa ukomelela kwamazinyo e-helical kunye nokunceda ukwandisa ubomi bempompo.Ukusetyenzwa kwesinyithi, i-aluminium, i-magnesium kunye ne-zinc, i-angle ye-helix kufuneka ibe nkulu, enokuba malunga ne-45 degrees, kwaye ukusika kubukhali, okulungileyo ekususweni kwe-chip.