I know this looks really easy, but this really is my "trade secret". Easy right? Depending on the size of the piece, it might take a little while. Having some sort of power sanding tool would be helpful at those times.
Steps in the Tutorial:
So you’ve got a sintra piece that needs the seams cleaned up. 1. Using 60-80 grit sand paper, begin sanding along the edges of the trim, where the seams can be seen. Change direction frequently, as to help blend the seam together. 2. Finish off seams and small gaps by applying a small amount of superglue along the edge.
I use a worn piece of sand paper to first spread the superglue lightly, and then with a fresher piece I sand more rigorously to completely remove the seam.
The final result of this process will depend on your particular need and desire to continue sanding. If removing the seam is not that important, you will not need to use this process for long. However, you can completely remove the seam with enough sanding.
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