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Just been looking back through all the old posts to find out whats wrong with my potty puma 80 - and got thoroughly overloaded with info. but i still have one simple question. what exactly is lockout? is it a designed state of the boiler workings, say to guard against some lethal...

thanks kevplumb suspected as much with the valve - perhaps its too open, and thats why the other rads arent getting hot sometimes. whats the usual amount of opening for them?

I'm trying to understand my very unpredictable (old) potterton Puma combi and could do with having a very basic question answered. 3 upstairs rads 3 downstairs. the one in the bathroom is small and has a short pipe underneath that bypasses it, with an inline valve that was set only partially...

Lizzy. I know encaustic as an art term that means using pigments in wax with heat to make paintings - but have discovered that it has a specific meaning in ceramics, to quote the OED "(of bricks and tiles) inlaid with differently coloured clays burnt in." this probably means that the tiles are...

the existing yellow could be the worst problem - yellow is about the hardest colour to get right. In the shop and working from swatches it is easy to get a yellow that tends towards the green end of the spectrum, this will make a room strangely gloomy - there is something to do with scale here...

ahaa - you were right, it is in your profile - i just discovered how to access it to send an email - you need to go to the 'general diy' subject list and click on the originator of the message.

I suppose I could be helpfull and leave you my email address though. thanks for the reply - I have sent an email in return

Lib I might be interested in putting something together for you. I am a sculptor/designer working in brighton - been doing it for 25 years - have lots of contacts in the arts and crafts. I particularly enjoy finding unorthodox ways of making things, using combinations of low/high tech materials...

sorry have made a mistake above keralastic is not made by ardex it is made by mapei - and to complicate things further it is sold in the uk as keralastic but in the us as planicrete. in the us keralastic is a cement based adhesive not a pu sealant. the link to mapei is hard to find so ive...

Krstfr52 You can use any two pack polyurethane varnish to waterproof most things - however there is a basic snag with your choice of materials - 1 polystyrene is so flexible that any coating will develop cracks fairly quickly 2 plaster of paris is not a permanent material at all. in the...

found this link to glulam (glued laminate) beams that might be of some help. click the image

chemical fixings are fairly easy to get hold of or even to make yourself using catalysed filler such as plastic padding or chemical metal - some even use gripfill - but they are not really needed for thermalite block, it would be overkill. the secret of making good fixings is accuracy - drill...

neat trick halfajob. and what a suprise - Im just over the river from you in adur. I noticed that you havent used the meta tags in the header though. you can add the meta search engine tag and get even more exposure from engines that use this tag to index sites - be carefull though...

there is a chart appended to the british building regs that gives you min sizes for particular spans - but they are for when you are using the beams as joists spaced at regular distances. i seem to remember that the regs also give you a typical domestic floor load weight that you can use to...

wait. I dont know what on earth i was thinking of when i said that mahogany is an illegal wood. it must have been late. It is of course Teak that is no longer an importable wood, mahogany is still available if only at a price.

Yep I too am a convert - but I use a mac and the answer there is a program called form•z - it really helps with quantities even giving the mass of a solid to be cast so you can work out how many bags of sand/cement/aggregate you need - the best thing though is that it models in real scale - so...

damn I just spent about an hour writing a reply and my connection dropped just before send - so here goes attempt no 2. the short lengths arent really much of a problem - you can visualise it like this - the current beams are sagging evenly throughout their length, any added fillets will in...

thanks for clarifying that ollski - you sound as though you speak with authority - is that so?

if you were casting it in a mould banging the side of the mould would be enough - so perhaps try a few minutes of fast light tapping on the post itself - to send some shockwaves through the mix. Although I do have a friend that casts very fine items ( he has made a canoe from reinforced...

I guess the fencepost companies have to cover themselves for when people just stuff some drymix around the post and call it concrete - I think that as long as you do a good measured mix of concrete that is slumping just the right amount (a bit runny but still stays on a trowel - wetter than...