Ib lub viav vias ya raws lub hnub tau yaig feem ntau yog xaws los ntawm ob lub ntsiab ntoo - rov qab thiab sab nraud. Txhua ntawm ntu yog lub quarter ntawm lub voj voog. Txoj siv txoj phuam yog sewn cais, tom qab ntawd ib qho tsis tu ncua los yog pom cov zipper yog xaws rau sab lossis nruab nrab ntawm nraub qaum. Tus tsim lub rooj zaum ua kom yooj yim tuaj yeem ua nws txoj haujlwm yooj yim dua thiab tsim daim qauv tiab los ntawm tsuas yog ib qho ntawm cov ntaub, muaj ib qho kev sib txuas ntawm txoj siv.
Nws yog qhov tsim nyog
- - txiav ntawm tus hniav ua hauj lwm;
- - ntawv;
- - txiab;
- - chalk lossis seem;
- - xaum;
- - koob qhia kev;
- - centimeter;
- - koob.
Cov Lus Qhia
Kauj ruam 1
Siv qhov ntsuas tsim nyog los tsim ib nrab hnub hnav ris tsho. Koj yuav tsum pom ib nrab ntawm lub duav thiab qhov ntev xav tau ntawm cov ris tsho. Thov nco ntsoov tias cov khaub ncaws yuav tsum haum xoob ncig ntawm lub duav - rau qhov no koj yuav tsum tso ib qho nyiaj pub rau kwv yees li 1 cm. Piv txwv li, sim txiav ib qho khoom nrog qhov ntev ib nrab ntawm 32 cm thiab ntev li ntawm 64 cm.
Kauj ruam 2
Tam sim no koj yuav tsum xam lub vojvoog ntawm qhov taw qhia rau lub duav kab (qhov no yog luv, npawv cov kab sab saum toj ntawm lub ntsiab txiav, uas txoj hlua khi yog xaws). Qhov no tuaj yeem ua tau raws li cov qauv: 1/3 tau khoo los ntawm ib nrab-girth ntawm lub duav (ntawm no: 32); 1 cm ntxiv (tso cai rau kev ywj pheej ntawm haum). Tus zauv zauv yog khoo 2; tom qab ntawd lwm ob peb centimeters rho tawm. Piv txwv: 1 / 3x (32 + 1) x2-2 = 20 cm yuav yog qhov ntev ntawm lub vojvoog puab.
Kauj ruam 3
Nqa daim ntaub ntawm qhov loj me. Qhov ntev ntawm cov canvas hauv qhov no yuav tsum muaj qhov sib npaug ntawm 64x2 = 128 cm, uas yog, ob ntev ntawm cov khaub ncaws yav tom ntej. Koj tuaj yeem pom qhov yuav tsum muaj qhov dav ntawm cov canvas yog tias koj ntxiv lub vojvoog ntawm qhov taw qhia rau lub duav (20 cm) rau qhov ntev ntawm tus qauv (hauv qhov piv txwv no, nws yog 64 cm) thiab ntxiv ib qho ntxiv 6 cm. Koj tau txais 64 + 20 + 6 = 90 cm.
Kauj ruam 4
Quav ib daim ua hauj lwm canvas tsawg kawg 128 x 90 cm ib nrab nrog cov tsis ncaj nceeg. Cov hlais tawm yuav tsum nyob sab laug. Kos lub waistline ntawm daim ntawv ua ntej, tom qab ntawd txuas tus qauv rau sab saum toj kawg ntawm kaum ntawm cov ntaub thiab khij ib qho kev ua haujlwm nrog lub vojvoog ntawm 20 cm. Qhov no yog sab saum toj ntawm cov ntawv qhia kom txiav.
Kauj ruam 5
Nyob rau sab saum toj thiab hauv qab npoo ntawm daim ntaub, khij qhov ntev ntawm daim tiab thiab kos duab puag ncig. Tam sim no koj muaj ib feem peb ntawm "tshav" vajvoog npaj, thiab ib lub voj voog ("ib nrab hnub") ntawm ob sab ntawm daim ntau ua haujlwm txiav.
Kauj Ruam 6
Khij nrog rau cov seem los yog cov tw hle cov chalk nrog dotted kab cov txheej txheem pub rau lub nraub qaum ntawm 1.5 cm, thiab raws txoj kab ntawm lub duav - lub tiab ntawm 2-2.5 cm. Carefully pin tawm ob txoj kev txiav nrog koob thiaj li hais tias cov kab txiav ntawm lub vaj huam sib luag tseem tsis txhob sib cais hauv qab txiab.
Kauj Ruam 7
Txiav tawm cov ris tsho hnav nyias nyias. Nws ntev yuav yog los sib npaug ntawm lub duav ntxiv 3-3.5 cm rau khawm-kaw. Dav - 6 cm (3 cm ntawm sab xub ntiag thiab nraub qaum).
Kauj ruam 8
Yog tias koj tau tswj hwm kom raug txiav lub tiab zoo nkauj ib nrab hnub, xaws sab nraud ntawm lub vaj huam sib luag, ua cov txheej txheem qis dua ntawm cov khoom thiab xaws ntawm txoj siv sia. Tawm qhov kawg ntawm lub npoo dawb - koj yuav xaws ib tus zipper uas muab zais rau hauv nws.
