Measures against warpage deformation of resin 3D printers

We manufacture and sell plastic products using molds and dies.

It is very rare for us to make molds just to confirm the product shape in prototypes or mockups.

Recently, resin 3D printers have become popular even for home use, and although there are some restrictions, it is possible to create simple resin parts.

However, when molding large objects with the popular LPD (thermal melting and laminating method), warpage deformation may occur and the nozzle may contact the object, causing molding to stop.

This can happen not only with resin 3D printers but also with metal 3D printers.

The magnitude of warpage deformation is largely related to the shrinkage rate of the resin. ABS resin, which is commonly used, has a relatively high shrinkage rate, making it susceptible to warpage deformation.

Furthermore, when the product thickness is thinner than 3 mm, deformation is even more pronounced.

molding failure

The countermeasure to these problems is to make the stacking planes smaller, because when warp deformation occurs, the larger the area of the stacking planes, the greater the deformation due to shrinkage.

　　　　　　　　　　　　　　　　　Successful molding

In the above, the product is tilted for molding. This makes it possible to reduce the stacking plane

This allows molding with less warp deformation. Naturally, since a support is necessary, it is necessary to design a support suitable for the shape of the product.

In addition, coating the molding platform with the same material as the material used is also effective in reducing deformation.