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#epoxy

3 posts3 participants1 post today
TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️

A home-made spring clip for small parts in the glider cockpit.

This is just several plies of fiberglass wrapped around a piece of foam that was sanded to a taper and the desired dimensions. Fiberglass can serve as a spring, but I would not use it this way where cycling fatigue is possible.

#AvGeek#Aviation#ElectricAircraft
TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️

For some glider fabrication jobs, I want the epoxy to cure faster...so I heat it in the microwave.

Seven seconds, mix it to even out local hot spots, seven more seconds, mix again...then apply. (For a small batch...approx 20 grams.)

I think the microwave radiation doesn't merely warm the epoxy. I think it somehow also accelerates (far more than a few seconds of warming would) the curing chemical reactions.

I only do this for epoxy jobs that are NOT structurally critical.

en.wikipedia.org/wiki/Epoxy

en.wikipedia.org/wiki/Microwav

#AvGeek#Aviation#ElectricAircraft
Goblin's Hoard Dice

I rarely repeat designs. I take inspirations from past designs, I tweak them, I keep experimenting and playing but I rarely is there a set that I just want to replicate (as much as that is possible with the fickle nature of resin). But I can't stop thinking about this set since I've pulled it from the pressure pot ^^
So what do you think, is it worth it to try to create another one of these? 💙

#dice#dicemaking#dnd
TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️

The glider's tail water ballast tank has an outlet valve that fits 1/2-inch (13mm) I.D. tubing.

That can drain the tank in a matter of seconds.

The problem is that the far larger wing ballast tanks take five minutes to drain.

I want the tail tank to take five minutes to drain so that the C/G does not quickly shift while I'm dumping water.

I will probably add a small diameter flow constrictor to the outlet pipe. At this time I'm not sure of the final configuration, so I'm making two different versions of flow restrictors.

The thickened epoxy will need to be drilled to a small diameter (3/32 inch? 2.5mm?) in the left part, and the right part will need the brass bore to be drilled out to remove unwanted epoxy.

This is a follow up to:
universeodon.com/@KrajciTom/11

#AvGeek#Aviation#ElectricAircraft
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