Use sandpaper. When putty is dry, lightly polishing with sandpaper will produce dust; if sandpaper is polished; there is no dust or little dust, it proves that the wall putty has not been completely dried, and it can never be constructed twice.

　　4. 粗略的時(shí)間估計(jì)。其實(shí)膩?zhàn)痈稍飼r(shí)間基本上可以估算，膩?zhàn)有再|(zhì)不同，時(shí)間也不同。普通膩?zhàn)痈稍镏?- 3天，防水膩?zhàn)又?周。季節(jié)不同，干燥時(shí)間也不同，一般夏天在2-3天就可以了，冬天假如需要5-7天，假如遇到陰雨天氣，那么時(shí)間就會拖長，具體情況還視整個(gè)家裝環(huán)境而定。

　　4. Rough time estimation. In fact, putty drying time can be basically estimated, putty properties are different, time is also different. Ordinary putty dries to 1 - 3 days, waterproof putty to 1 week. The season is different, the drying time is also different, generally in summer in 2-3 days, winter if need 5-7 days, if encounter rainy weather, then the time will be prolonged, the specific situation also depends on the entire home decoration environment.

　　以上4種方法是區(qū)分膩?zhàn)邮欠裢耆稍锏姆椒ǎ晕覀冃枰貏e注意這一環(huán)節(jié)，以便我們可以進(jìn)行下一步的工作。以上每一個(gè)都是使用較多的，我們根據(jù)自己的情況來選擇。

　　The above four methods are to distinguish whether the putty is completely dry or not, so we need to pay special attention to this link so that we can proceed with the next step. Each of the above is used more, we choose according to our own situation.