, ▁due ▁to ▁an ▁o xygen - per me able ▁memb rane ▁which ▁lies ▁below ▁the ▁res in , ▁creating ▁a ▁" de ad ▁zone " ▁( pers istent ▁liquid ▁interface ) ▁prevent ing ▁the ▁res in ▁from ▁att aching ▁to ▁the ▁window ▁( ph ot opol ym er ization ▁is ▁in hib ited ▁between ▁the ▁window ▁and ▁the ▁polym er izer ). ▁ ▁Un like ▁s tere ol ith ography , ▁the ▁printing ▁process ▁is ▁considered ▁continuous ▁by ▁its ▁found ers ▁and ▁consider ably ▁faster ▁than ▁traditional ▁D LP ▁processes , ▁en abling ▁the ▁production ▁of ▁parts ▁in ▁minutes ▁instead ▁of ▁hours . ▁ ▁Rec ently , ▁the ▁use ▁of ▁s tere ol ig raph ic ▁ 3 D ▁printing ▁techniques ▁has ▁been ▁developed ▁further ▁to ▁allow ▁for ▁the ▁add itive ▁manufact uring ▁of ▁cer am ic ▁materials . ▁Success ful ▁ 3 D ▁printing ▁of ▁cer am ics ▁using ▁s tere ol ith ography ▁is ▁achieved ▁through ▁the ▁phot opol ym er isation ▁of ▁pre cer am ic ▁polym ers ▁to ▁yield ▁sil icon ▁based ▁cer am ics ▁of ▁a ▁class ▁known ▁more ▁widely ▁as ▁polym er ▁derived ▁cer am ics , ▁including ▁sil icon ▁car b ide ▁and ▁sil icon ▁o xy car b ide . ▁▁ ▁Comput ed ▁ax ial ▁l ith ography ▁ ▁Comput ed ▁ax ial ▁l ith ography ▁is ▁a ▁method ▁for ▁ 3 D ▁printing ▁based ▁on ▁revers ing ▁the ▁principle ▁of ▁computed ▁tom ography ▁( CT ) ▁to ▁create ▁prints ▁in ▁photo - cur