レーザー刻印機、わりと手頃な値段であるんだなhttps://www.amazon.com/Engraver-WAINLUX-Engraving-Accuracy-Connection/dp/B09MLZ3TSH/ref=asc_df_B09MLZ3TSH?tag=bngsmtphsnus-20&linkCode=df0&hvadid=80264466605913&hvnetw=s&hvqmt=e&hvbmt=be&hvdev=c&hvlocint=&hvlocphy=&hvtargid=pla-4583863996455511&psc=1
思考の /dev/null
