I have an Apple tree about that size that only makes good cricket balls. I’ve never done grafting before - as there a good guide you followed?

What you want to maximise is overlapping surface area and glue.

How you get there will depend on your CAD skills.

One option is to print a 3rd sleeve that you push both parts into. Another option is to cut a 1.5mm deep slice out of the top face of the left part, and a 1.5mm slice out of the bottom of the right part so they slot together with as much surface area overlapping as possible.

https://youtu.be/FzCm1iTf8PA might be helpful, but all the examples are about quite chunky parts.

‘Aurenkin’ is not in the pleasers file. This incident will be reported.

The specifically using BTC is a bit wild, but generally speaking storing excess solar energy in your hot water system is a great idea: https://www.catchpower.com.au/green-catch-power

Isn’t this the whole idea behind flatpak but everyone seems to hate it

“cool”

Define glyph

Needs more beans. And jeans.