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بعد از اینکه مدل گچی ساخته شد، در مقیاس صنعتی مدلها معمولاً به روش تراش شکل مییابند. بعد از شکل یافتن مدل، یک قالب و معمولاً چند تکه از مدل ساخته میشود. به این قالب اصطلاحاً "قالب اصلی" میگویند. سپس از قالب اصلی نیز قالب دیگری که اصطلاحاً "قالب مادر" خوانده میشود، تهیه میگردد.از قالب مادر نیز بالاخره قالبهایی که باید در خط تولید مورد استفاده...
![whatsapp](/images/whatsapp.png)
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یک پیام ارسال کرد