Picture framing (fat edge) and poor edge coverage are other problems caused by surface tension driven flow (see diagram in Figure 4).
These include craters, dewetting, telegraphing, picture framing (fat edges), and poor edge coverage.
Irregular spraying can give thick spots that pop as do electrostatic spray wrap, fat edges, or sags.
With industrial coatings, edge defects tend to occur as thick beads along edges or just back from them (fat edge or picture framing), or they may involve an inability to coat edges, especially if they are sharp (see Figure 1 for both types of defects).
The terms fat edge and picture framing often are used interchangeably, but the latter is an obvious choice when the defect really does look like a frame.
The terms fat edge
and picture framing often are used interchangeably, but the latter probably should be reserved for situations where thick edges are formed on all four sides of a panel or part.
Snip or cut the fat edges
to prevent the steaks from curling up.
If there is too much flow, the result will be sagging on vertical surfaces and there may be other defects such as craters, dewetting, pull-back from edges, fat edges
, and sinks and bumps.