another thing i thought out ....

<-- gauss heading towards drain

punchout_tukey(1/0.5/0.5);gauss(0.7);punchout_tukey(1/0.5/0.5);gauss(0.7);punchout_tukey(1/0.5/0.5);gauss(0.7)

<--- drain heading towards gauss

blackman;punchout_tukey(1/0.5/0.5);nuttall

welch;punchout_tukey(1/0.5/0.5);bartlett_hann

rectangle;punchout_tukey(1/0.5/0.5);flattop

triangle;punchout_tukey(1/0.5/0.5);bartlett

connes;punchout_tukey(1/0.5/0.5);hann

<-- gauss drain

punchout_tukey(1/0.5/0.5);gauss(0.7);punchout_tukey(1/0.5/0.5);gauss(0.7);punchout_tukey(1/0.5/0.5);gauss(0.7)

(full round)

punchout_tukey(1/0.5/0.5);gauss(0.7);punchout_tukey(1/0.5/0.5);gauss(0.7);punchout_tukey(1/0.5/0.5);gauss(0.7);blackman;punchout_tukey(1/0.5/0.5);nuttall;welch;punchout_tukey(1/0.5/0.5);bartlett_hann;rectangle;punchout_tukey(1/0.5/0.5);flattop;triangle;punchout_tukey(1/0.5/0.5);bartlett;connes;punchout_tukey(1/0.5/0.5);hann;punchout_tukey(1/0.5/0.5);gauss(0.7);punchout_tukey(1/0.5/0.5);gauss(0.7);punchout_tukey(1/0.5/0.5);gauss(0.7)