[:)]Morning lads,
When reading threads and magazine articles I’m always coming across the terms ‘flashing’ and ‘ejector pin marks’. Obviously these aren’t good things but I have no idea what these terms mean-can anyone tell me. I’ve tried searching and although the words are mentioned I can’t find a decent meaning to either.
Also, what are ‘Fruil Tracks’, are they some sort of aftermarket track or something?
ATVB
Ben [:)]
[QUOTE]
…flashing…[/QUOTE]
Flash is excess plastic around the sides of a piece where the mold halves come together.
Usually round (or partially round) marks on a piece where the parts sprue was ejected from the molding machine. Not a problem if the marks do not show. They require cleaning up if they will be visible on the model.
Aftermarket tracks.
[:)]
Thanks for clearing that up for me Mike!
ATVB
Ben [:)]
To add: Ejector pin marks can be raised or recessed. Where the moulds have been run for a long time and the pins themselves have been broken or lost, you can sometimes get a solid column pf plastic. Sometimes the pin/bore can wear and you can get tubular “flash” around the perimeter of the pin mark.
Raised pin marks need to be shaved/sanded flush. Recessed pin marks need to be filled and then smoothed flush.