making a non-spill oil pot

Made one of these the other day:
Attachment 21030

I'm not the first to make one of these but thought it looked like a good idea. CNC4XR7 posted this video, which he saw on mrpete's channel
https://www.youtube.com/watch?v=gj-upkW8rhQ&t=97s

I've knocked over my current oil pot more times than I remember so something had to be done. I found a few plastic non-spill containers, but they didn't appeal. So I started looking at aluminium water bottles on ebay, about £5 from China. Then by chance saw this for 50p at our local recycle centre:
Attachment 21031
Attachment 21035

I did a few calcs and decided on taking ~40mm off the top, and cutting the base down to ~70mm. This leaves about 20mm clear when the top is inverted and pressed into the base.

Chucked it up in the lathe, running at about 100 rpm and taking it easy. The nose of the chuck made a nice gentle steady. The last bit when it broke through was a bit perilous:
Attachment 21032

I cut the base down to ~70mm using the parting tool to get the cut going then finished off with a hacksaw, and then finally I used the normal LH cutting tool to tidy the edge. The bottle is very weak during this bit and it kept moving away from the tool, plus it jumped out of the jaws more than once so be careful. No photo of this bit.

Finally trimmed it down and pressed the top (inverted) into the base. As it was a very tight fit I couldn't push it down far enough to roll over the raw edge, so just cleaned it up so I didn't cut myself on it:
Attachment 21033

Wondered if the original lid would fit in the thread - and it did! This will keep bits out when not in use:
Attachment 21034

I've not filled it with oil and tried the non-spill action yet but should be OK.