i have been doing this for a month. patience.
62 gr rue. common commodity quality from persian grocery.
ground coarsely with a very low quality coffee grinder.
vinegar & naoh, the most common and cheapest available.
12 (yes, twelve) a/b cycles.
3 washes with distilled water until clear and not getting any clearer.
4 days of dehydrating of the final product.
at the end it's very very dry very very light powder, not sticking to filter paper.
final yield 5.37 gr +- errors, multiple measurements of course.
this is including the coffee filter, the common and cheapest paper coffee filter.
so net weight is 5.37 - filter weight (unknown to me).
relatively quality electronic scales, compared to common chinese garbage from etailer, who is proud of their quality.
it does strike me as very high yield, but it's a fact.
next exp 105 gr, 2 more weeks remaining at least.

The yield is likely so high because so far no manske was involved. Most people do manske and measure weight after. If you're fine with the quinazolines (not pregnant) then it's not obligatory to manske, the peganine has actually medic properties. But for the sake of comparing results then similar proceeds should be considered.

A generic size 4 unbleached coffee filter weighs 1.60 grams. A size 102 "Melitta" brand unbleached coffee filter weighs 1.47 grams. I hope this helps!

good to know

final yield after manske, 3.49g golden needles from 62g rue. is that normal or low?
freagging pain to collect, so fragile, there were around 80% longer than 1cm, before i destroyed them. the taste is right, only a few 4mm needles were enough for taste test.