Q: Tili ndi sikwashi yokazinga patebulo lathu lodyera looneka ngati maple, lomalizidwa ndi mafuta a linseed okha, omwe timapaka nthawi zonse. Dzungu linatuluka ndipo linasiya banga. Kodi pali njira yolichotsera?
Yankho: Pali njira zingapo zochotsera mawanga akuda pamatabwa, koma mungafunike kuyesa njira zingapo zothetsera vutoli.
Kawirikawiri, mawanga akuda pamatabwa amayamba chifukwa cha chinyezi chomwe chimabwera chifukwa cha ma tannins, omwe amatchedwa zinthu zomwe zimapezeka mu makungwa a oak ndi matabwa a oak ndipo akhala akugwiritsidwa ntchito kupukuta chikopa kwa zaka masauzande ambiri. Ma tannins amapezekanso mu zipatso zambiri, ndiwo zamasamba, ndi zinthu zina za zomera. Ndi antioxidant ndipo kafukufuku wambiri pakadali pano akuyang'ana kwambiri pa zotsatira za kudya zakudya zokhala ndi tannin pa thanzi.
Ma tannins amasungunuka m'madzi. Pamene matabwa akunyowa ndipo madzi akuphwanyika, amabweretsa ma tannins pamwamba pomwe ma tannins ochulukirapo amakhala. Izi zimachitika nthawi zambiri ndi matabwa okhala ndi ma tannins ambiri monga oak, walnut, cherry, ndi mahogany. Maple ali ndi ma tannins ochepa, koma ma tannins omwe ali mu madzi a dzungu mwina adasakanikirana ndi ma tannins omwe ali mu mapulo kuti apange banga.
Madontho akuda pamatabwa amathanso kuchitika chifukwa cha nkhungu, yomwe imayamba pamene matabwa anyowa ndipo ndi chakudya cha bowa osiyanasiyana omwe amadziwika kuti mildew kapena mildew. Monga zinthu zina zilizonse zachilengedwe, madzi a dzungu angagwiritsidwe ntchito ngati chakudya.
Oxalic acid imachotsa madontho a tannin ndipo chlorine bleach imachotsa madontho a nkhungu. Oxalic acid ndi chinthu chogwiritsidwa ntchito mu Bar Keepers Friend Cleaner ($2.99 ​​​​pa Ace Hardware), koma imapanga zosakwana 10 peresenti ya zosakaniza za chitini, malinga ndi pepala lachitetezo la wopanga. Oxalic acid imapezekanso mu Bar Keepers Friend sopo wofewa, koma pamlingo wochepa. Kuti mupeze mawonekedwe osasungunuka, yang'anani zinthu monga Savogran Wood Bleach ($12.99 pa chidebe cha 12-ounce cha Ace) munjira yopaka utoto.
Komabe, asidi wa oxalic ndi bleach ziyenera kukhudzana ndi ulusi wa matabwa kuti zigwire ntchito. Chifukwa chake, okonza mipando choyamba amachotsa mapeto ndi zosungunulira kapena kupukuta. Komabe, n'zoonekeratu kuti bangalo lalowa m'mapeto, kotero mutha kulumphira mwachangu ku nsonga ya asidi wa oxalic pansipa kuti muwone ngati asidi wa oxalic wokwanira walowa kuti muchepetse bangalo popanda kuchotsa. Positi yomwe ndapeza pa intaneti idawonetsa zithunzi pang'onopang'ono za banga lakuda likuchotsedwa pamatabwa popanda kuchotsedwa ndi phala la magawo awiri a Bar Keepers Friend cleaner ndi gawo limodzi la madzi kwa mphindi zochepa, kenako theka loyeretsa ndi theka la madzi. Wolemba nkhaniyi adagwiritsa ntchito ubweya wachitsulo wowonjezera wa 0000 pakugwiritsa ntchito kachiwiri, koma zingakhale bwino kugwiritsa ntchito pedi yopangidwa. Ubweya wachitsulo udzasiya zidutswa m'mabowo a matabwa, ndipo ma tannins adzagwirizana ndi chitsulo, ndikusandutsa matabwa oyandikana nawo kukhala akuda.
Ngati mungathe kuthana ndi banga ndipo mukusangalala ndi zotsatira zake, zabwino kwambiri! Komabe, n'zotheka kuti simudzatha kupeza mtundu wofanana. Ndicho chifukwa chake akatswiri amalimbikitsa kuchotsa kaye mbali yomaliza, kukonza banga, kenako kukonzanso.
Kuthina mwina ndiyo njira yabwino kwambiri yochotsera zinthu zakale chifukwa mawonekedwe a zinthu zakale ndi ofunikira. Carol Fiedler Kawaguchi, yemwe amakonza zinthu zakale ndi mipando ina kudzera mu kampani yake ya C-Saw yomwe ili ku Bainbridge Island, ku Washington, akulangiza kugwiritsa ntchito yankho la mowa wosapsa bwino komanso lacquer wothina bwino. Kuti mudziteteze ku utsi, gwirani ntchito panja ngati n'kotheka kapena valani chigoba cha theka chokhala ndi fyuluta ya nthunzi yachilengedwe. Valani magolovesi ndi magalasi oteteza mankhwala. Zosungunulirazi zimaphwa msanga, choncho gwiritsani ntchito m'malo ang'onoang'ono kuti muchotse kapena kupukuta mapeto ake asanayambe kuuma.
Kapena, Kawaguchi akuti, mungagwiritse ntchito Citristrip Safer Paint ndi Varnish Striping Gel ($15.98 pa lita imodzi ku Home Depot). Chotsukira ichi sichinunkhiza, chimakhala chonyowa komanso chogwira ntchito kwa maola ambiri, ndipo chimalembedwa kuti ndi chotetezeka kugwiritsidwa ntchito m'nyumba. Komabe, monga momwe mukuonera kuchokera ku zilembo zazing'ono zomwe zili pa chizindikirocho, onetsetsani kuti mpweya wabwino ukuyenda bwino ndipo valani magolovesi ndi magalasi oteteza ku mankhwala.
Ngati mukufuna kupewa kuchotsa mankhwala, kupukuta ndi njira ina - izi zitha kukhala zokopa kwambiri pamapulojekiti omwe sagwiritsa ntchito zinthu zakale komanso okhala ndi malo athyathyathya popanda zojambula zovuta zomwe zingapangitse kuti kupukuta kukhale kovuta. Gwiritsani ntchito chotsukira chozungulira chopanda dongosolo monga 5″ DeWalt Corded Hook & Loop Sander ($69.99 pa Ace). Gulani paketi ya sandpaper yapakati ($11.99 pa mawilo 15 a Diablo sanding) ndi mapepala ochepa a sandpaper yabwino (220 grit). Ngati n'kotheka, sunthani tebulo kunja kapena mu garaja kuti matabwa asalowe paliponse. Yambani ndi sandpaper yapakati. Mafuta a linseed amachitapo kanthu ndi mpweya womwe uli mumlengalenga kuti apange pamwamba pa pulasitiki. Izi zimachitika mwachangu poyamba, kenako zimachepa ndipo zimatha kwa zaka zambiri. Kutengera momwe kumaliza kulili kolimba, mutha kupukuta mosavuta. Kapena, dontho laling'ono la mafuta lingapangidwe pa sandpaper, zomwe zimachepetsa mphamvu yake. Yang'anani sandpaper pafupipafupi ndikuisintha ngati pakufunika.
Mukatsala ndi matabwa opanda kanthu, mutha kuthana ndi banga. Yesani kaye oxalic acid. Chizindikiro cha Savogran chimati sakanizani chidebe chonse cha ma ounces 12 ndi galoni imodzi ya madzi otentha, koma mutha kukulitsa ndikusakaniza kotala la zomwe zili mkati ndi lita imodzi ya madzi otentha. Gwiritsani ntchito burashi kuti mufalikire yankho lonse pa kauntala, osati banga lokha. Yembekezerani mpaka matabwa atayera momwe mukufunira. Kenako pukutani kangapo ndi nsalu yoyera komanso yonyowa kuti mutsuke pamwamba pake. Katswiri wokonza pamwamba Jeff Jewitt akunena m'buku lake lakuti Making Furniture Refinishing Easy kuti kuchotsa banga kungafunike chithandizo chambiri chokhala ndi maola angapo owuma pakati.
Ngati oxalic acid sichotsa banga, yesani kugwiritsa ntchito chlorine bleach pa bangalo ndipo musiye usiku wonse. Ngati mtundu watha pang'ono, koma osakwanira, bwerezani njirayi kangapo, koma mwina tsiku lonse kuti muthe kuyang'ana nthawi ndi nthawi ndikumaliza kukonza matabwa asanayambe kusinthika kwambiri. Pomaliza, sinthani ndikutsuka ndi viniga woyera wa gawo limodzi ndi magawo awiri a madzi.
Ngati banga silikutha, muli ndi njira zitatu: imbani katswiri wopaka utoto; pali ma bleach olimba, koma nthawi zonse sapezeka. Muthanso kuwapukuta mpaka banga litatha, kapena kuwayatsa mokwanira kuti asakuvutitseni. Kapena konzani kugwiritsa ntchito chidutswa chapakati ngati choyika patebulo.
Ngati mwagwiritsa ntchito oxalic acid kapena bleach, matabwa akauma, muyenera kupukuta komaliza ndi simenti yopepuka komanso yopyapyala kuti muchotse ulusi womwe wayandama pamwamba chifukwa cha kukhudzana ndi madzi. Ngati simukufuna simenti yoyeretsera ndipo mulibe, mutha kuigwiritsa ntchito ndi sandpaper ya grit 220. Chotsani fumbi lonse lopukuta, kenako mutha kupukuta ndi mafuta a linseed kapena china chilichonse.