Elastic bands rau cov plaub hau

Qhov kawg ntawm ob peb lub caij hauv cov qauv plaub hau yog ntuj, ntuj, ntuj negligence thiab dynamics. Cov qauv no yog siv rau hauv cov khoom siv - tej yam yooj yim ua kom cov duab tiav thiab stylish.

Eraser-kauv rau cov plaub hau - qhov zoo

"Springs" yog tsim los ntawm kev sib tov raws li silicone, uas muaj cov khoom zoo heev. Lawv txiav txim siab tias cov chaw hauv cov plaub hau nyob hauv daim ntawv ntawm cov leeg. Qhov zoo rau qhov khoom siv no yog ntau heev:

Muaj tsis muaj ntau yam tsawg minuses, thiab lawv tsis heev tangible:

Erasers-spirals rau cov plaub hau - yuav ua li cas siv?

Siv kauv rau cov plaub hau yog yooj yim heev. Nyob rau hauv ib tes, lawv tsuas yog paub raws li cov cwj pwm niaj zaus, tab sis tom qab poob lawv nyob rau hauv qee qhov:

Xws li cov ywj pheej ntawm cov khoom siv muag, raws li txoj cai, ib qho txawv ntawm cov xim - koj tuaj yeem txuas lawv cov hneev thiab ib txwm saib zoo meej.

Yuav ua li cas xaiv ib lub hnab roj hmab rau cov plaub hau?

Kom them sai sai thaum xaiv cov cuab yeej no, koj xav tau cov nram qab no:

  1. Lub thickness ntawm lub muab kauv tau muab piv rau cov ntawv sau qoob los sis xov tooj xaim. Lub tshaaj yuav tsum yog nyob ntawm qhov density ntawm cov plaub hau - lub thicker cov plaub hau, wider lub elastic band.
  2. Yog tias koj xav nkaum qhov quav hauv koj cov plaub hau, ces koj yuav tsum yuav dub, dawb, pob tshab, muaj cov pos hniav. Yog tias koj lub hom phiaj yog ua kom muaj xim liab - muab qhov khoom rau cov khoom ci ci. Qhov ntau ntawm cov roj silicone roj hmab yog li ntawd, qhov kev xaiv, nws yeej yog ib qho zoo nkauj.
  3. Tus nqi ntawm ib kauv yog tsis siab, tab sis ib qho lossis qis qis yuav tsum thawb koj mus rau lub tswv yim ntawm substandard khoom.