在制作如图所示木模时,根据一般铸造工艺,往往按木模中心线分成两半制。或用两块刨平一面的木料用钉子钉牢后进行划线加工。前种制作方法,会使模型合拢后产生错位,虽可修正,但会影响模型尺寸精度。另一种方法是用钉子钉的,能解决错位问题,但由于钉子钉在里面,妨碍加工。为此我们采用了在已刨平的两块木料分型面上,都涂上 As shown in the production of wooden mold, according to the general casting process, often divided by the mold center line into two halves. Or use two planed wood nails nailed after scribing process. The former method of production, the model will be dislocated after closure, although can be corrected, but it will affect the accuracy of the model size. Another method is to use nail nails, to solve the problem of dislocation, but due to nail nails inside, hinder the processing. To this end we have adopted two parts of the flattened wood surface, are coated