Just take them where there are really high radon levels and they'll be fine!!

There's a product specially developed to polish car headlights called "K2 Lamp Doctor" available online for about 4 quid a tube. There are also a few ceramic coatings that claim to give a 9H hardness to plastic headlights, some of these work if they are cured properly.

The surface finish on the anodizing is shocking, this is very often down to impurities in the material or the wrong process being used for a particular material, the aluminium burns in the bath resulting in a part that looks as if it's been grit blasted. This poor finish is obvious on the unit...

I'd have also assumed that ignorance offers no defense, then a traveller drives a digger through Offa's dyke flattening 50 yards of it and the courts let him off because he didn't know what it was. Cadw were also involved with this and seemed powerless to do anything...

I suppose it should have been opened with the aid of a bulldozer!  :o http://www.telegraph.co.uk/news/uknews/law-and-order/10875703/Offas-Dyke-Never-heard-of-it-says-traveller-who-bulldozed-landmark.html

Considering the nature of our sport I'm surprised that this isn't a constant topic of discussion on here. I've had knee problems on and off for many years and was told to give up silly activities such as caving and running by my GP. I eventually had an MRI with BUPA and most of my issues were...

How do car companies such as Tesla overcome this issue, is that a different Lithium chemistry to the 18650 cells that loads of us use. I think some of the Tesla batteries used to be made by Panasonic and seem to remember these also being 18650 cells. I suppose an intelligent charger could start...

Caving, an outdoor activity?....NRW seems to think it is.. Page 16  :read: https://naturalresources.wales/media/4757/wales-outdoor-recreation-survey-2014-final-report.pdf

The new lock fitted to the Aggy gate has the same key pattern as the old lock so your old club keys will/should fit. We are finding that the nice new lock isn't as tolerant of damaged keys as the old lock that was fairly worn was. When inserting the key you have to make sure it goes in right to...

Walked over to take a look earlier and there is about 3 mm of the broken key sticking out of the lock, managed to get a really good purchase on the broken end with a pair of snips, but even pulling as hard as I could it doesn't move at all, I guess there's a load of grit in there and thats...

The dig is in South Wales but thanks for the offer of the trade discount.. Considered using a cordless disk cutter in other digs but the dust would be horrendous, that said, if I could get a breathing pipe over to where the draft comes other the top of the calcite it may be OK. There is one...

Thinking of hiring one of these for a weekend to try and cut through a large calcite flow that blocks our way forward in our dig. We can run a cable in from a 110v generator as we're not far from the entrance which is by the side of a road (hence not using more obvious means of removing the...

Owen was someone who never lost his enthusiasm, even in recent years he was still searching for dive sites along the Afon Lwyd near Abersychan and would regularly come along to Brynmawr CC meetings to join us for a pint and try to enlist a bit of help. Rest in peace Owen Huw

Crash barriers are idea if you can get hold of them, they are galvanized so will last pretty well underground. Worth trying some of the road building companies such as Costain as they like to be seen to have a social responsibility and do donate to local projects. They're building a 3G football...

For anyone placing bolts in sea caves there are always these Titanium glue in bolts made by Ushba.  http://www.ushba.com/catalog/rock.html Talked about here http://www.safeclimbing.org/education/deepbluesea.htm