![PolyCast™ is a filament designed to produce investment patterns for investment casting applications. 3D printing significantly cuts down both the cost and lead time by eliminating the tooling process.](https://static.wixstatic.com/media/c7f345_1580dbbc9aaa4d7ca019ec6fbd56c379~mv2.jpg/v1/fill/w_339,h_339,al_c,q_80,usm_0.66_1.00_0.01,enc_auto/Image-empty-state.jpg)
Brands Tested
PolyMaker
PolyCast
PolyCast features Polymaker's Layer-Free technology and Polymaker's Ash-Free technology:
Layer-Free technology involves exposing a 3D printed part to an aerosol of micro-sized alcohol droplets, generated by a rapidly vibrating, perforated membrane called the nebulizer. The aerosol will then be adsorbed by the surface of the 3D printed part and render it smooth and layer-free.
Ash-Free technology allows Polymaker’s filament which has been designed for investment casting to burn off cleanly without any residue, enabling defect-free metal parts. 3D printing has been used to produce investment casting patterns as it cuts down both the cost and lead time for small-volume production runs.
Surface Quality
++++
Strength
++++
Ease of Use
++++
Settings
Speed
(mm/sec)
![astro_icon_filament_extruder.png](https://static.wixstatic.com/media/c7f345_254aeb28bcad411996139a06186830e7~mv2.png/v1/fill/w_61,h_60,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/astro_icon_filament_extruder.png)
40-60
Fan
(%)
![astro_icon_fan.png](https://static.wixstatic.com/media/c7f345_ef1f32f42e6a4f3799699bc636780c6d~mv2.png/v1/fill/w_62,h_60,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/astro_icon_fan.png)
40-60
ExtruderTemp
(Deg C)
![astro_icon_preheat.png](https://static.wixstatic.com/media/c7f345_48db7b2253a14676825a41412fd981e1~mv2.png/v1/fill/w_63,h_60,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/astro_icon_preheat.png)
190°C-220°C
Bed Temp
(Deg C)
![astro_icon_bedtemp.png](https://static.wixstatic.com/media/c7f345_937c8f40ab3d404c9a55f6549fee4d5d~mv2.png/v1/fill/w_60,h_60,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/astro_icon_bedtemp.png)
0-70°C
Retraction
(mm)
![gcreate_icon_unload_filament.png](https://static.wixstatic.com/media/c7f345_12435c72cc7549599f39d55742d97c42~mv2.png/v1/fill/w_62,h_60,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/gcreate_icon_unload_filament.png)
0.75
Additional Recommendations
Very similar to PLA's printing settings