๐ฏ๐๐๐ผ๐ฎ๐: ๐ช๐ถ๐น๐บ๐ฎ ๐ฐ.๐ฌ ๐ฆ๐ฐ๐๐น๐ฝ๐๐ฒ๐ฑ ๐ฃ๐ฎ๐ฟ๐๐ - ๐ง๐ฒ๐๐ ๐๐ถ๐ ๐ผ๐ณ ๐ฏ๐ ๐ฃ๐ฟ๐ถ๐ป๐๐
Just received the 3D printed prototype parts for Wilma 4.0, and Iโm thrilled to share the results of the dry fitting!
๐ฃ๐ฟ๐ฒ๐น๐ถ๐บ๐ถ๐ป๐ฎ๐ฟ๐ ๐๐ต๐ฒ๐ฐ๐ธ: ๐๐ฟ๐ ๐๐ถ๐๐๐ถ๐ป๐ด ๐ฏ๐ ๐ฃ๐ฟ๐ถ๐ป๐๐ฒ๐ฑ ๐ฃ๐ฎ๐ฟ๐๐
Iโm pleased to report that the parts fit as designed (see left photo), indicating no major rework on the joints is necessary. This success is attributed to both experience with the 3D printing process and careful design decisions during digital file preparation.
๐ฏ๐๐๐ผ๐ฎ๐ ๐ช๐ผ๐ฟ๐ธ๐ณ๐น๐ผ๐ ๐ฉ๐ฎ๐น๐ถ๐ฑ๐ฎ๐๐ถ๐ผ๐ป
This project marks the first time Iโve used 3DCoat for the entire workflow, from sculpting to 3D printing. My primary concern was potential dimensional errors during the conversion between Surface meshes and Voxel objects. To mitigate this, I incorporated larger fit tolerances. However, the physical prints confirm 3DCoatโs capability. Notably, the left arm widget, belt buckle, and belt holster achieved perfect friction fits.
๐๐ถ๐น๐ฒ ๐ฆ๐๐ฏ๐บ๐ถ๐๐๐ถ๐ผ๐ป ๐ฎ๐ป๐ฑ ๐ฏ๐ ๐ฃ๐ฟ๐ถ๐ป๐ ๐ฃ๐ฟ๐ผ๐ฐ๐ฒ๐๐
File submission was seamless, thanks to a solid understanding of 3D print limitations and leveraging 3DCoatโs tools to address potential issues.
๐ ๐ฎ๐๐ฒ๐ฟ๐ถ๐ฎ๐น ๐ฎ๐ป๐ฑ ๐ฃ๐ฟ๐ผ๐ฐ๐ฒ๐๐: MJF (Multi-Jet Fusion additive manufacturing) with PA12 Polyamide
๐ฃ๐ฟ๐ผ๐:
โข No temporary support structures required.
โข Higher density, lower porosity than SLS.
โข Excellent strength.
โข Neutral reaction with acrylic paints.
โข Good machinability.
โข +/- 0.3mm accuracy.
๐๐ผ๐ป๐:
โข Grainy surface texture, limiting fine detail painting.
โข Visible striations, possibly requiring filler and sanding.
โข Higher cost for low-volume production.
โข Less favourable surface finish compared to resin-based printing post-painting.
๐ฆ๐ฐ๐ฎ๐น๐ฒ ๐ฎ๐ป๐ฑ ๐๐ผ๐๐ ๐๐ผ๐ป๐๐ถ๐ฑ๐ฒ๐ฟ๐ฎ๐๐ถ๐ผ๐ป๐
The assembled model stands at approximately 450mm (1:4 scale). While this larger scale enhances handling and painting, it significantly increases prototyping costs compared to previous 1:6 to 1:8 scale projects.
