Just posted off a generator to a wind farm... Visitor centre. Though the design is actually based on a wind turbine design, though I took all the iron out of the design so the resistance to motion is less with no load, so the difference when you turn on a light is very very obvious.

Our solder pot died, and we needed one before Monday.... Luckily I had a cartridge heater in a drawer, and we built a new one.

A build a landscape exhibit we built for a wetland visitor centre. youtu.be/FgBwrBJgCYY?... Fairly straight forward but it could be applied to a lot of situations.

It was a pain to build because granular materials are hard, but here is our exhibit on why normal distributions mean a small change in temperature might have a big effect on the probability of extreme events. youtu.be/8SYsT-k7ij0?...

We made a surprisingly engaging exhibit to communicate the difference between types of plastics. youtu.be/PcfUeHN03ok?...

An exhibit we built recently that lets you pretend to be in a heist film and lets you find out why a short password is a bad idea. youtu.be/Ebw7R6gTtuw?...

I'll just cut a slot in this tube on the milling machine I thought... Somehow it involved CNCing 5 custom jig pieces and some other odds and ends....

We made a Morse code exhibit that can be used by people who don't know Morse code, at the cost of a whole lot of LEDs, and somehow over a thousand lines of code. youtu.be/MaQHN5bitLI?...

We worked out a way to more than double the number of light beams on our magnetic light wall exhibit, and make them brighter.

A slightly odd piece of kit I built for Steve Mould, reflecting a Newton's cradle back again with a lever. It doesn't work too badly... Though you could probably do better with serious engineering. youtu.be/kY2YeM5fNDw?...

My bathtub has been immortalised in a @stevemould video about the Brennen torpedo. Though it did involve a huge amount of swearing at propeller designs. I think it was such a pain because the propeller is running too shallow to be efficient. youtu.be/qvtZIdSI1Yk?...

I realised that almost by definition the more economically important a STEM subject is, the less interesting what researchers are doing will be too the general public. Because if there is a lot of money involved researchers will be so far down a rabbit hole it will be about fractional improvement.

Somehow even when I buy a tornado bottle connector it ends up in the lathe because (a) modern bottles have a shorter thread which meant it leaked so I had to cut 3.2mm off each end. (B) They made the hole too small so I had to drill that out anyway... It works nicely now

The senior destructive testing engineer has just spent 10mins guessing 2digit random codes, which is probably a good sign for the exhibit based on this.

We have just finished a Scytale exhibit. A Greek means of encoding messages. Seemingly simple but there were definitely subtleties to the leather straps, and attaching bolts to the middle of a tube.

I was wondering if Musk's going mad and wrecking Twitter was actually all a plot by big social media manager... This thought brought to you by me wondering if I could be bothered to post about what I have just made on 5 different social media sites.

How am I seriously considering building a padlock just because noone sells the right kind that will let go off the key? This can't be sensible.