In a video, the YouTube channel ‘M.M’s Prop Shop’ demonstrates advanced methods for post-processing 3D-printed objects. The focus is on refining the surface quality of various filaments such as PLA, PETG and ABS.
Optimised print settings form the basis. At least four wall lines and four upper and three lower layers are recommended. This prevents filling structures from being exposed during grinding.
An electric foot callus remover is used for the initial processing. This unconventional but effective tool enables large areas to be smoothed quickly. This is followed by manual sanding with sandpaper of different grit sizes to reach even hard-to-reach areas.
An innovative technique is the use of UV resin mixed with fumed silica. This mixture fills fine imperfections and hardens under UV light. For larger imperfections, filler is used, which is diluted with acetone.
The video shows a special method for 3D printing with ABS: the surface is treated with a mixture of acetone and dissolved ABS filament. This chemically smoothes the surface and recycles filament residues at the same time.
Filler primer plays a central role in the process. It is applied in several thin layers to minimise unevenness. Fine sanding is carried out between each layer.
More details can be found directly in the video:
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