Internal holes and gaps can greatly weaken the integrity of your parts. Under extrusion between the perimeter and infill undermines the design. Catch this problem easily with a quick X-ray inspection.
Separating and splitting of layers will often have a domino effect that will be visible from the outside, but tearing it apart to see what went wrong makes the investigation less successful. X-ray allows you to see inside the part without adding defects of your own that confuse the analysis.
When the infill is stringy and thinner than required, a weak interior is created. When strength is integral to your part, this is unacceptable.
When printing large parts, especially with high temperature filament, warping can occur. This can happen on outside features as well as internal ones.
There are many tools to measure the accuracy of the your print’s outside dimensions, but when internal measurements are critical, turn to TruView™ X-ray inspection.