came up with this for applying warmed butter on toast it uses gravity to drip. better than spraying i suspect.

will be adding linear slide to this project soon.

another option would be to soak some strings in butter and dip them all over the toast.

something to try later might be using a metal screen to scrape in a layer of butter then heat it up overtop of the toast.

might induction cook some eggs to go with it.

have not printed or tried the hose probably does not fit anything either.