Bishiyoyi sun kunshi yawancin ruwa. Duk wani Dan Scout wanda ya taɓa yin ƙoƙari ya haskaka wuta tare da itace mai sabo ne cewa irin wannan itace mai duhu ya riga ya riga ya ƙone. Wannan shi ne saboda an tsara tsarin salon salula don bada izinin sap (wanda shine mafi yawan ruwa) ya gudana a cikin itacen. Wasu nau'in bishiyoyi suna dumi tare da danshi lokacin da aka yanke su.
Gisar da aka sare itace kawai bai dace da aikin itace ba, kamar yadda dole ne a bushe shi da yawa.
Wannan shi ne dalilin da ya sa masu sana'an katako zasu ajiye kaya don saukewa na iska don yin gasa a cikin tanda, wanda ake kira kiln-drying.
Tsarin kayan aiki mai kyau don aiki na itace ya kasance a matsayin daidaituwa tare da yanayin da aikin da aka gama zai kasance. Akwai wasu ƙididdiga don tunawa a nan:
1. Itace itace zai dauki zafi daga ko dawo da zafi zuwa iska. A wasu yanayi, wasu lokuta na shekara sun fi sanyi fiye da wasu lokuta. Midwest Midwest na Amurka shi ne misali mafi kyau: yayin da lokacin bazara ya yi sanyi sosai, iska mai sanyi za ta iya bushe sosai, don haka mutane za su yi amfani da masu amfani da sanyi a cikin hunturu don sa danshi cikin iska. Wannan bambanci a yanayin zafi shine dalilin da ya sa ƙofofi da suturar tufafi zasu tsaya a lokacin rani amma motsawa a cikin hunturu.
2. Wani kayan kayan da ke cikin ma'auni da yanayin shi lokacin da aka kera shi a wani wuri mai sanyi kamar Miami zai fuskanci "tsoratar da al'adu" idan an motsa shi a wuri mai bushe kamar Phoenix.
Daga bisani, itace zai ba da yalwa mai yawa a cikin iska a ƙoƙarin daidaitawa da yanayinta. Idan mai aikin katako ba ya shirya daidai lokacin gina ginin, fashewa yana da yiwuwar gaske.
Ta Yaya Itaƙin Ya Ƙara?
Sanin cewa itace zaiyi ƙoƙarin daidaitawa tare da zafi a cikin yanayinta, dole ne mai aikin katako ya san yadda itace zai fadada.
Rashin motsi a cikin wani samfurin zai faru a fadin hatsi, kamar yadda ya saba da hatsi. Wato, 1x6 wanda yake da tsawon ƙafa huɗu zai kusan kasancewa tsawonsa hudu. Duk da haka, dangane da abun ciki na abun ciki na ciki da iska (da nau'in itace da ake amfani dashi), nisa da kauri (zuwa ƙananan ƙananan) na iya bambanta da yawa.
Tips don yin amfani da ƙãra
Lokacin da ake gina gawa ga wani hukuma, kowane ɓangaren kusurwoyi huɗu na akwatin ya kamata hatsi ya daidaita a cikin wannan hanya. Saboda haka, dukkan bangarori hudu zasuyi girma sosai (musamman idan duk hudu sun fito ne daga wannan ma'auni na asali). Wannan, duk da haka, zai iya haifar da matsala yayin da ake amfani da sutura a cikin majalisar, yin kusantar wuya don buɗewa & rufewa. Wannan shine dalilin da ya sa aka gina gine-gine mafi yawan hukuma ta hanyar amfani da plywood , wanda ba shi da damuwa kamar kusan katako mai girma.
Lokacin da gluing wasu allon don yin saman tebur, ba wai kawai ya kamata hatsin kowane katako a cikin wannan shugabanci da allon su zama daidai ba don haka allon kullun suna da launi iri ɗaya, amma gurasar ƙarshe ta kasance a cikin wasu hanyoyi. A wasu kalmomi, lokacin da aka ajiye ɗayan ɗaya tare da hatsi na ƙarshe (alamar wasan kwaikwayo) da ke fuskantar sama, ɗakin na gaba zai fuskanta, sa'an nan kuma, da sauransu.
Wannan zai taimaka wajen "daidaitawa" kowane kullun wanda zai iya faruwa.
Lokacin da aka tsara irin wannan saman a kan tsarin kamar tebur, ya kamata a dage farawa don ƙarshen allon suna kan bangarorin biyu na teburin. Don haɗuwa da saman zuwa ga tsarin, kunna gaban gefen teburin don babu wani motsi da zai iya faruwa, amma a kan kishiyar (gefe), dole ne a sanya sutura a cikin ramummuka don ba da damar allon don fadada ko kunkuntar. Rashin lissafi ga irin wannan motsi zai iya haifar da fashewar ( shrinkage ) ko kuma girman kai (fadadawa) a saman saman.