We got a freeze dryer and with that comes a vacuum pump where the oil needs to be changed periodically. So we got a separating funnel to separate the water from the oil. I needed a stand for the separating funnel so I designed this one. The dowel is 0.43 in (7/16?, 3/8?, 1/2?, not sure).

Update: I tweaked the base to be slightly angled backward (v3), so that when it has the separating funnel on it, filled with oil, it's about level.