| In regards to the panel lines on aircraft; most modern | | | | over "dings", wear and tear on the paint, and other |
| aircraft have very tight joints between panels and | | | | flaws in the finish. From a navy mechanic's point of |
| the individual panels that make up the airframe are | | | | view, paint is applied to protect the airframe from |
| not actually visible. We expect that our models should | | | | corrosion (and rightly so), so matching the color is not |
| show this "detail" which in fact does not exist. What | | | | that important? Many times the paint is not mixed |
| many people think of, as "panel line is really | | | | thoroughly, or does not match exactly for some |
| differences in the way that the paint fades the panel | | | | other reason, so the finish is kind of "spotty". A |
| lines that will show are those that are accessed | | | | friend refers to this as "Corrosion control |
| often: gun bays, some avionics bays and fueling | | | | camouflage". It is best replicated with very subtle |
| access panels. That kind of stuff. | | | | differences in the shades of paint. Again, practice will |
| Airliners are very similar, except the panels will be | | | | perfect this on a model. |
| such things as lav access, potable water, and | | | | Many stains on the exterior of an aircraft are due to |
| external power. Things like that your best source of | | | | hydraulic leaks and seepage, fuel spills and stuff like |
| information is to look at actual aircraft. That being | | | | that. Slats and flaps can have (and usually do have) |
| said, I have several methods: | | | | stains, though they usually "run" in the direction of |
| Paint the model in the final coat and apply a "wash" | | | | airflow away from the joint. Most modern military |
| of paint touched into a panel I want to highlight. | | | | (well, commercial too for that matter) have single |
| Capillary action will cause the paint to "run" down the | | | | point refueling. Usually under the wings! Air to air |
| panel line. The excess paint can then be removed | | | | refueling can result in a fine mist that looks like a |
| from the surrounding area. Water based paint is good | | | | dusting of clear gloss on the top surfaces. |
| for this as it can be cleaned off with water before it | | | | The photo-etched parts that you asked about are |
| dries. Enamel or lacquer works too, but the excess is | | | | best cut off on a flat surface using some sort of |
| harder to clean up. Oil based paint thinned with | | | | sharp knife blade (Exact, or something like that). |
| turpentine will also work, but that method is best if | | | | When I have tried to use side cutters, I can't cut |
| you have a gloss finish to work with. To highlight the | | | | close enough to the part and usually end up bending |
| panel line, but not over emphasis it, it is best to use | | | | it in the process. For corners use a straight edge or |
| only a slightly darker shade. | | | | some sort of form to bend the parts over. |
| (Requires and airbrush) Use a straight edge along the | | | | Fortunately most photo-etched parts on airplanes |
| panel line (ruler, piece of card, etc.) and lightly spray a | | | | represent flat parts, so bending them to fit is not |
| darker color at a very low angle from the straight | | | | really an issue. To glue them to the model use some |
| edge. This can add a very subtle difference that is | | | | sort of cyanoacrylate like Super Glue, or Crazy Glue. |
| convincing with enough practice. | | | | Make sure all the bonding areas are free of paint, or |
| Paint the darker color along the panel lines first, and | | | | the glue will not stick. |
| then apply the topcoat a little at a time. I have done | | | | I hope this is not too confusing; I have been |
| this with an airbrush; don't know if it will work with a | | | | distracted by two F-15s and a B-1 that are arriving |
| brushed-on finish. | | | | here for an air show. They seem intent on blowing |
| On many Navy aircraft, touch up paint is sprayed | | | | the shingles off of my roof. |