Making PCB engraving machine | sand and template

PCB engraving machine production sand sculpture works whether it is large and medium-sized monomer or large sand, sand is very important, it directly affects the work of production and storage, must be very scientific and prudent. Because of the physical characteristics of sand of the constraints, in the construction of large sand group, each monomer or the upper and lower connecting monomer must follow the "Pyramid" structure method. In order to ensure the Pyramid structure consolidated, each will need to rely on the template sand, multilateral type not the same type template combined into a stacked, a ladder, which is conducive to the sand compaction, suspended sand is carved from top to bottom.

Making PCB engraving machine template is generally divided in iron and wood two categories.

Iron is strong and not easy deformation, but not easy to carry; wooden formwork simple operation and delivery, but with bar iron hoops and coarse wire help solid. Iron is strong and not easy deformation, but not easy to carry; wooden formwork simple operation and delivery, but with bar iron hoops and coarse wire help solid. The template can be a quadrangle, six side, eight side, but common to four oriented, bottom-up template to increasing until the top distance of 60 cm.