I think that part of the issue with sink marks it due to the thickness of the plastic. Typical places where you can observe this is in thicker parts, such as propeller blades. Even on a 1/48 scale and some 1/72 there is often a dimple where the part is thickest. Another typical area is location pins and moulded detail on the reverse.
As said plastics shrink as they harden off. Thicker the plastic the more it will shrink. Solid parts will always be affected by this. The only real solution from the manufacturing side is to either find another material that can be used, or stop making solid parts.... I feel the work involved on building prop blades out of two halves would be much worse than a smear of filler and a sanding stick.
In a kit like this, as Barry has pointed out the tolerances are +- a flies tadger. Sand just a tiny bit to much off some parts and it will bite you in the bum at some point. When all the parts fit so snugly, it will be almost impossible not to have a problem at some point or the other.
Ian M
As said plastics shrink as they harden off. Thicker the plastic the more it will shrink. Solid parts will always be affected by this. The only real solution from the manufacturing side is to either find another material that can be used, or stop making solid parts.... I feel the work involved on building prop blades out of two halves would be much worse than a smear of filler and a sanding stick.
In a kit like this, as Barry has pointed out the tolerances are +- a flies tadger. Sand just a tiny bit to much off some parts and it will bite you in the bum at some point. When all the parts fit so snugly, it will be almost impossible not to have a problem at some point or the other.
Ian M
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