Beta, plastic chair moulding mein sabse pehle toh mould steel robust hona chahiye—P20 ya H13 steel le lo, nahi toh jawab do denge high-pressure shots. Ek cavity se shuru karo, gating side mein rakhna taaki finishing achhi rahe. Shrinkage ka hisaab material pe hai, cycle time chhota karne ke liye thanda karne wala system lagaana. Humare yahan to ek chhota workshop hai, isiliye ek cavity, ek operator—bas itna hi sambhav hai. Zyada bada socha toh paise ka bachcha udd jaayega, aur meri beti ka engineering sapna adhura reh jaayega.
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