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Valves. Specifically mainly cold cathode discharge tubes like nixies plus audio and subminiature types for designing, building and repairing amplifiers, radios and digital neon clocks. About 12,000 and counting... Other stuff too... Several 1000 books, engraved mother of pearl, hop tokens from...

Longshot, I know... ...but does anyone have a T4 and any associated bits that they're looking to move on or which is just never used and you'd like some return on that investment? I can't justify a new one, so pre-loved would be just great!

Just found a photo of one of our "Chartwell" benches in situ... at Chartwell! Note that the National Trust don't generally like oiling the benches we made for them - they get many 1000s of visitors a year, some of whom are definitely gravitationally challenged! Some gardens put them under...

Perhaps it would have been better to say "save more polluting energy" as obviously the same number of joules are required to boil a given amount of water regardless of how those joules are produced. However in our case a chunk of those joules are solar and produced by a GSHP with a COP of around...

I realise that - which is why I mentioned the GSHP - the hot water we get from that is potable and sterilised weekly (2-hour heated > 60C) and there is no header tank - ours is a pressurised sealed system. Older properties with vented HW systems are indeed ghastly. We have a circulating HW...

We fill our kettle from the hot tap which is at a steady 50C (from the GSHP). It's drinking water and is going to get boiled anyway, plus we only fill the kettle with what is needed. I've no idea why more folk don't fill from the hot tap? 50% (*) of the work has already been done. Solar tea...

I did this recently for a cellar door as part of my workshop rebuild - big & heavy plus the cellar can get damp and it's exposed to SW weather - it's also a sort of stable door. The top bit opens outwards and the bottom inwards - this is due to where the floor above is. Made it as one piece on...

Indeed, but it was an obvious selection as the Shaper Origin uses a Festool spindle motor.

Excuse me asking, but was that outcome deliberate? It looks kind of... a bigger entrance than intended?

As a long-time beekeeper who has always hated working with WBC hives (like those in the OP), I must say I really like this! The problem with making WBCs is mainly around the compound angles in the "lifts" - the external box layers - and that they're a multi-walled hive (the actual beehive was...

Worth remembering that an RCD is a leakage/fault detector, not overcurrent. You still need fuses/MCBs etc.

I've used SolidEdge 2D Free For years and have recently been playing with the 3D version. I like it.

Hah! It's currently with Bulb at around 23p /kWh day and 14p/kWh night, but Bulb are a bit shaky and equivalents, like Octopus, are even more expensive. A year ago it was 13p/kWh daytime. So, using a heat pump that has a COP of around 3.5 (which ours is) that means for every kW we put in from...

We did an eco build 16 years ago and the GSHP supplying all heating and hot water was part of that. We buy our electricity from an 100% renewable supplier. The house is two parts - an old oast that was gutted and completely rebuilt and a new part that looks old, but internally is block and...

You have.mail!

Personally I would never ever just replace a fuse with 13A. If that was an ok thing to do, why bother with having different fuses at all? No need to keep a range in stock (or even to make them) - Just fit a 13A one and be done with it! Or a nail? Nails are good. No. Fit the right sized and type...

Not as I understand it. We only use 3ph as it was available due the the core of the original building being an Oast house which used 3ph fans, thus we already had 3ph on site. 1ph is perfectly normal - The power consumption of a heat pump is quite low as it's essentially just a couple of...

Depends what you mean by "an average house". We're 7 double bedrooms and about 4,500sq ft. Self build in 2005 around the core of a Victorian oast. GSHPs are slightly more efficient than ASHPs and have less moving parts - generally they need less maintenance and are largely set-and-forget. GSHPs...

Ditto. Have had a GSHP since 2005 - one of the earliest domestic ones in UK - did it as part of a self-build. Not missed a beat since install and commission. Ours is three phase - it's the primary heat source - does all hot water, heating etc.

Really nice. What did you fill/seal the top with (apart from epoxy!).