How to remove plastic molded on fan grille on diesel without destroying whole shell?

Any tips for how to do this while doing the least damage to the rest of the shell?

I"m looking to put in real grilles on a GP38 to allow the sound from the tiny speaker I installed to better escape the shell.

Thanks.

 

Don't know which scale or version you're working, but I would probably drill out the corners and use a sharp blade.

 

An HO Bachmann GP38-2.

The drill is a helpful suggestion. I'll get Out my Dremel. Thanks.

 

That video tutorial was exactly what I was looking for. Thanks.

 

I used a small drill to go around the fan, then drilled a starter hole in the center of the fan, then drilled the fan out with I think an 1/8" drill bit. Cleaned up with a sharp exacto knife, then finished off with a round file. (I bought one just a tad smaller then the finished hole.) Then followed the BLMA instructions.

 

The video states to paint the fans white, but is this necessary? I would think the metal color would be more realistic.