[QUOTE=Robin Hewitt;53917]I am told you can recreate a spark eroded texture by sand blasting.
QUOTE]
yep theres an injection moulder i spoke to down south who commercially makes angling products rod rests etc and uses this method.
with the part i had in mind to do, the software i use predicted it would be full of errors as i wanted to use delrin,im told in its usable state it has the consistancy of play doe.
im working on a drawing for a smaller less demanding part that consists of two parts again delrin i will attempt this regardless of what software says and see what happens plan is to use an airbrush sized kit to lightly texture the mould.