I'll go right to the point with some stupid questions: Should you change metal screens in pipes even if it doesn't have a hole? What's the difference between metal and glass screens (besides looks)?
well a glass screen is going to make it so there is no metal contact in your hit, i prefer no screen/jack but would take a screen over a jack most of the time
Ive use both glass and brass pipe screens. As far as taste i never notice anything with the brass. daisy style glass screens>brass screens>jacks in my opinion And as far as changing the screen, i use the same one for a while. Just take it out, burn the resin off and put it back in.