I had an epiphany the other day... I got #002 out of the jig and was dreading the flux removal when I had an idea. I work for a company that has a fairly large ultrasonic cleaning tank. I figured hot aqueous solution and ultrasonic action might be the ticket. It worked awesome! I had it in for about 10 minutes at ~130 degrees F. Gave it a fresh water rinse, then into the industrial oven at 250 for about 10 minutes to dry it out. A quick wipe with WD40 and that was it. Before and after shown below.
I think there are "services" with machines like this that may not be too expensive. Sometimes it's a real blessing to have a day job. Cuts into the bike building time but there is always the give and take
Happy Friday!
BTW, I took the inspiration for this design from Tandem Toms vintage build... Thanks Tom!
Before
After!