Just did some experimentation with KNSB + surfactant.
I used a 27% solution of sodium laureth sulfate.
4 drops out of a one way use pipette per 50g batch where needed to properly cast KNSB fuel 65/35 around a rather slim spindled 15mm tool.
(Drop counting is a little vague, but I have no means to properly scale such small amounts.
8 drops are ~ 0,16g)
Using the surfactant really makes a huge difference, no more scooping, just pouring, perfect.
I'd say it's a succes.
The thing has one catch, it definitely slows down the fuel.
3,8mm/s without surfactant
3,4mm/s with four drops/50g batch (+ ~0,16% surfactant)
2,8mm/s with eight drops/50g batch (+ ~0,32% surfactant)
KNO3 came out of a kitchen blender, +1% brown iron oxide catalayst.
Have you guys ever tried to use surfactants? What are your eperiences?