"Thread trace" yog hais txog lub koom haum daim ntawv tsim los ntawm cov xov stitching rau ntawm qhov chaw ntawm cov khoom siv stitched los yog hla cov khoom. Thaum xaiv ib tawv tshuab xaws, peb yuav tsum xaiv tus qauv raws li cov khoom yuav tsum sewn. Cov tshuab tawv tawv muaj ib rab koob stitches thiab ob rab koob stitches, thiab cov koom haum tsim los ntawm cov khoom siv yog txiav txim siab los ntawm txoj kev siv (kev sib txuas ntawm tus kheej, kev sib txuas, lossis kev sib txuas sib txuas). Tsis tas li ntawd, ib txoj hlua khi tsuas yog ib qho uas ua rau lub plooj.
Ntxiv nrog rau lub luag haujlwm tseem ceeb ntawm kev sib txuas cov hlua khi, cov xov kab kuj tseem muaj kev txhawb nqa (tswj kev ruaj ntseg ntawm qee qhov chaw), kev tiv thaiv kev ua haujlwm (tiv thaiv cov ntaub ntug los ntawm unraveling), kev pabcuam kev ua haujlwm, kev ua haujlwm zoo nkauj, thiab lwm yam. Muaj ntau txhiab hom khoom siv xaws. Ntxiv nrog rau kev lag luam tsoos tsho, kev lag luam khoom tawv tawv (xws li khau tawv, pluab, tawv khaub ncaws, siv tawv, hnab tawv, hnab ris, thiab lwm yam) kuj tseem siv cov tshuab xaws tawv. Kev lag luam rooj tog tsim khoom (xws li rooj zaum, txaj, txaj txaj, thiab tsev pheeb suab) yuav siv lub rooj zaum xaws tshuab, thiab ntau lwm yam lag luam, xws li kev lag luam tsheb tsim (xws li rooj zaum), yuav siv cov khoom hnyav.tawv tshuab xawsthiab ntxhib xov xaws tshuab.
Hauv qab no yog ob peb hom kev sivtawv tshuab xawsXov kab hauv 300 series, rau kev siv nkaus xwb:
301 xov kab: ncaj ob rab koob lockstitch xov kab kab, cov duab ntawm cov xov kab nyob rau hauv pem hauv ntej thiab nraub qaum ntawm cov khoom yog tib yam, yog li nws yooj yim rau kev khiav lag luam hauv cov txheej txheem thiab yog hom siv tawv tshuab xaws xov. taug qab.
304 xov kab: zigzag ob-needle lockstitch xov kab, zoo li tus zigzag, muaj siab elasticity piv rau 301 xov kab thiab muaj qee qhov kev nthuav dav. Hauv kev tsim khau, nws feem ntau yog siv nrog ntau yam xaws accessories rau kev sib koom ua ke, ntug trimming, thiab daim kab xev.
306 xov kab: ob-kab lockstitch dig muag xov kab kab, lub tshuab rab koob hla ntawm tib sab ntawm cov khoom, yog li ib sab ntawm cov xov kab yog ob-kab dashed kab, thiab lwm sab tsis pom cov xov kab. Haum rau pluab tsoos tsho folding tshuab.
Cov saum toj no yog cov xov kab hauv 300 series, uas muaj qhov zoo ntawm cov qauv yooj yim, ruaj khov, tsis yooj yim rau unravel, thiab tsawg dua xov.
