The card check size is generally 0.5mm-0.8mm.
The hook is down 0.2mm from the parting surface, which is good for mould making.
The occlusal surface of the hook and the groove is left in the interval of 0.05mm, so that the model can be modified later.
The top of the card slot is reserved with 0.3mm gap at the bottom of the hook, as the rebound space of the card hook deformation.
The groove is best sealed (in the case of the wall thickness guarantee not to shrink), the closed meat thickness is 0.3-0.5mm.
The remaining mating surfaces are left with a gap of 0.1-0.2mm.
The tip of the hook needs to stay 6-8mm.
The tip of the hook is 0.1mm round the corner for removal.
The card hook and surface area can be self - dominant 2 - degree drawing, as the removal Angle.
At the bottom of the card slot, the Angle of the guide Angle increases, so the area with different thickness of the meat is converted.