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Thread: I asked for advice
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15th October 2010, 09:54 AM #31
That is an interesting statement because I was around when PVA glue was invented in the early 50's. As a patternmaker we used the old animal glue then, because that was all was available at the time. The trouble with the animal glue was that it didn't like damp situations and because patterns are subject to damp sand when they are being used to make a mold, patterns tended to deteriorate.
One day a rep came and offered the boss to try the new ubeaut PVA glue he was flogging. He gave us a sample and we glued two lumps of timber with it and let dry.
To test it out we immersed it in a tub of water and weighted it down and left it for a week. After that we took it out and proceed to try and slit the joint by driving a screwdriver down it.
The result was that the glue held and and the timber split leaving the glue joint in place and a thin piece of timber stuck to the other piece.
From that day on we never used animal glue again.
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15th October 2010, 10:47 AM #32
But if your light is still drawing power when it's turned off, the person you should have the issue with is the electrician who wired your house![/QUOTE]
Well it's either that or the diodes and resistors in it to make it work that draw the power.
As for the Spark who did the place?probably pushing up Daisy's now,we've been here 19yrs and it was around the 20 mark when we bought it.
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15th October 2010, 10:57 AM #33
Don't take me wrong on the remark about PVA,it's a good glue and found in most Carpentry Places.
My main concern was the fact that the Table when finished will be outside,Under Cover but still outside and thought it just might not have the strength to take the conditions.
You've got me a bit curious though about the test you tried all those years ago,would the PVA of today still be as good after a week underwater??.
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15th October 2010, 11:01 AM #34
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15th October 2010, 04:07 PM #35acmegridley Guest
Trouble with Bunnies they have been indoctrinated by Selleys if Selleys dont make it,bad luck,dont even stock Titebond.
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15th October 2010, 04:55 PM #36
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15th October 2010, 05:06 PM #37SENIOR MEMBER
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Your LED light is not at fault. It will be glowing due to either of the following:
1. LED's are so sensitive that it is possible for them to faintly glow through the EMF radiated by the 50 hz power flowing throughout the house. The fact that it was green and barely visible would support this. With any direct electrical current it should have glowed more brightly.
2. Electrical leakage through your light switch assuming you are not just using a dimmer. You could test the switch by trying the LED on different light circuits and I doubt they will all be faulty.
Finally. the above will not affect halogen lights because they need more power than LEDs to begin glowing.
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15th October 2010, 06:43 PM #38
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15th October 2010, 09:09 PM #39
A faint glow from a LED can also be the fluorescent dyes/doping agents inside the LED getting rid of their last surplus electrons via quantum mechanical means.
When you switch the light off, there will always be some electrons trapped at what are called 'forbidden transition states' - quantum mechanical uncertainty will see them eventually decay out of this state, but it can take minutes or hours (this is the principal of all those glow in the dark Halloween novelties).
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16th October 2010, 12:34 AM #40
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16th October 2010, 09:14 AM #41
I've noticed the use of Liquid Nails etc is the default selection when glueing wood by students who come into my workshop, and not from my recommendation! It seems that home handyman shows, or advice from sales staff at the big hardware stores are the reasons.
I shudder when I see it but mainly from an aesthetic point of view- the glue lines stand out like dogs' ...., and an absolute pain to sand or otherwise remove excess. The linisher or random sander make a horrible mess with it, turning what could be a straight forward task into a "why do I bother".
I lean towards epoxy if I'm after reliable, water resistant joints, but have recently been using Exterior Aquadhere for silk screen printing frames, which get regularly soaked with a pressure cleaner.
CheersAndy Mac
Change is inevitable, growth is optional.
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16th October 2010, 10:09 AM #42
Andy,I do believe these TV Handyman Shows have a lot to answer for,we see so many time where they plug these products that give you the ,and I quote you "Why do I bother" effect.
I've seen so many times where they plug "Glue and Screw" why not just Glue and Nail if that's the case,punch the nail head in,fill the hole and sand,looks much better than seeing the screw head rebated into the Timber.
I still lean towards Doweling more times than not,yeah it's a bit more on the fiddly side at times,but once glued and clamped,the whole piece becomes one solid piece of Timber again,as for Liquid Nails?,Yeah I have used it on the odd occasions but I still see it as a lazy mans alternative or quick fix,but then! that's just me.
I've only just completed the First of Three Dolls cots,this one being the prototype took a bit longer with working out measurements and depths ,but I'm a happy man to have it done.It's a shame I have to cover it all with Pink Paint now but you know little girls,they love Pink.
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16th October 2010, 01:09 PM #43
So you called some poor lass at Big B a Richard Cranium when you already knew the answer to your question - epoxy or titebondIII. Then you go on to claim that your lights are drawing power, ahem, from a closed circuit and lastly you poo poo screwing and claim that dowelling is superior. Well dowels are just about the worst thing you can use to reinforce joints, there is virtually no side grain glueing surface. They might be ok for locating purposes not much more. So, just as you looked on the lass at B as an RC, some could look on you in the same light. For myself, I wouldn't because we are all on a learning curve and have different experiences, many have much more experience than you or me, I hope they would not think of us as RC's but help to educate us instead. All we need to do is empty our cup and be willing to learn, and in turn pass that knowledge on.
Cheers
Michael
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16th October 2010, 01:42 PM #44
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16th October 2010, 01:50 PM #45
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