Aluminum Casting - Lost PLA Process on Plaster Mold 

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The video don't have any comment, but all the steps are here described:
-PLA 3D printed part
-Wax risers and gating
-50%wt Sand + 50%wt Plaster
-Oven 100ºC 2h to dry the plaster (not enough)
-Oven 240ºC 2h to remove residual water (not enough)
-Burn PLA (Direct flame damaged the mold...)
-Mold assembling
-Aluminum Casting and pouring
Casting Result:
The part has some defects due mold damaging and water vapor.
The mold was not completely fulfilled, the last part of the movie show that the mold was not completely dried.
Next Steps:
-Improve mold drying process
-Apply heat instead of direct flame to remove PLA.