Silver photo-engraved iav txheej txheem

Ua ntej, ntxuav lub khob tiaj tus nrog dej huv thiab qhuav nws, tom qab ntawd coated nrog paraffin wax, tom qab ntawd kos ntau cov qauv ntawm cov khoom siv paraffin, thiab siv 1: 5 concentration ntawm hydrofluoric acid tov rau corrode iav nto. Thaum kawg, ncuav tawm cov hydrofluoric acid kom tshem tawm cov paraffin thiab ntxuav lub khob nrog dej.
Lwm tus, xws li cov iav xim, tuaj yeem ua tiav los ntawm kev pasting lossis txau, thiab cov txheej txheem tshwj xeeb raug tshem tawm. Stretch xov hlau rau hauv av thiab ntsug phab ntsa txhawm rau txhim kho cov qauv phab ntsa qis, ncej kab thiab kab teeb, kev ua iav, txiav thiab kev teeb tsa ntawm sab sauv thiab tag nrho cov ntoo (hlau) thav ntawv, iav installation, ntug painting thiab tu.