Problem: Orange Peel - Orange peel is a pebbled and uneven surface in the paint coat, similar in appearance to the peel of an orange. The only way to fix it is to sand below the actual fish eye, thoroughly clean the surface and all of your equipment, and then shoot again. The most common cause of fish eye is contamination – on the substrate, in the gun, in the air.

Problem: Fish Eye - Fish eye is pretty recognizable – they’re small crater-like holes in the paint surface, typically larger than pinholes – and they look like a fish eye. If you find that you’ve used too much glue, just soak a clean rag in acetone or MEK and clean up the edges. A visible glue line along the tapes will show through to your finish. When attaching the surface tapes to the fabric, be sure not to apply to much glue. Wicking occurs when the primer “slips” under the fabric instead of soaking into the weave as it’s intended. This adhesive acts as a barrier in those areas and prevents the primer from “wicking” underneath the fabric. Some of that glue may not necessarily be activated, but it needs to be applied everywhere. When applying the U500 to the airframe, it needs to be applied anywhere fabric will be touching structure. It is only to be used to attach the fabric to the frame and the surface tapes to the fabric. The U500 is NOT meant to be used as a fabric filler. Do NOT use butyrate thinner, urethane reducer, or lacquer or enamel thinner.

Acetone or MEK can be used to thin the U500 to the proper viscosity. The U500 glue is used for attaching both the fabric to the airframe and the surface tapes to the fabric.

Superflight grappling