I was requested if i could give an example of what i did in my pre-heresy world eaters army for my jetbike conversions. I decided to do a tutorial so everyone can see.
viewtopic.php?f=7&t=21210&start=225
Link to the Jetbikes i did.
Tools, razor, GW sprue clipers, 2mm plastic rod, round file, plastic bike, ruler just because.
Clip the wheels off with the clippers, clip the end of the rod at an angle.
Run the file in the middle to create a trough.
Another angle.
glue the stick on in the place you'd like it. After all this i then put some green stuff in the cracks and make it rounded and pretty. Once dry clip the rod to desired length of jet engine port out the back.
Any questions just ask.
Blind-