| Old Smokie | 22 May 2013 1:39 a.m. PST |
anyone know if there are any differences between these two glues |
| olicana | 22 May 2013 2:00 a.m. PST |
I don't know what the chemical differences are, but wood glue gives a much stronger bond, IMHO. Personally, I use both. I use wood glue for spot fixing and construction jobs, and I use PVA for bigger, glue intensive, jobs such as sand and grit basing. This is due to price. Each year I use something close to a half a litre bottle of wood glue costing about £15.00 GBP, and a 4 litre container of PVA costing about £20.00 GBP |
| MajorB | 22 May 2013 2:14 a.m. PST |
It's more or less the same stuff, except that white PVA is more dilute than wood glue. |
 BigRedBat  | 22 May 2013 2:17 a.m. PST |
Very interesting- I'd not appreciated that there was a difference. |
| steamingdave47 | 22 May 2013 2:50 a.m. PST |
A lot of the PVA glue sold for craft work is so diluted as to be virtually useless. It also needs to be thoroughly mixed before using, otherwise you just get water from the top of the bottle. My preference is to buy wood glue and dilute as and when needed. I have bought PVA intended for building work ( mortar additive, pre-screeding floors etc) and that is pretty thick. |
| badwargamer | 22 May 2013 3:13 a.m. PST |
My worst experience is buying a cheap pva glue and trying to dilute it with water. It wouldn't mix with the water, so goodness knows what it was made of. Every other wood or pva glue I've used mixes with water! |
| GildasFacit | 22 May 2013 4:14 a.m. PST |
The basic constituents of these glues are much the same but the better quality ones have additives that increase some aspect of performance, either for ease of application, the type of bond strength or surface penetration. Expensive variants are not always the best option for a job but, as few manufacturers are likely to give info relating to use with miniatures, it is often a 'suck it and see' approach to suitability that has to be taken. Personally I use the thick builders type for almost everything, I don't find the special wood glues have any advantages that are useful to me. For flocking I dilute with water and a few drops of surface tension breaker. When diluting PVA it is best to add water to glue a bit at a time and stir well – that way you don't over-dilute. |
| Old Smokie | 22 May 2013 4:56 a.m. PST |
thanks  |
| Ron W DuBray | 22 May 2013 9:32 a.m. PST |
good wood glues are water proof after they set are stronger then any wood, and set in about 1 hour and cure in 12. They are also sandable and paintable. PVA is not water proof, has the strainght of soft rubber, not sandable, and paint chips off. I personalty use Titebond III for all my wood glue needs, I do a lot of wood working as a side job. |
| MajorB | 22 May 2013 9:42 a.m. PST |
good wood glues are water proof after they set are stronger then any wood, and set in about 1 hour and cure in 12. They are also sandable and paintable.PVA is not water proof, has the strainght of soft rubber, not sandable, and paint chips off. If white PVa is just a diluted form of wood glue, then how can that possibly be true? Or are you saying that is not the case? |
| GildasFacit | 22 May 2013 10:33 a.m. PST |
First I have heard that PVA is not waterproof – the stuff I use certainly stops water penetrating a surface it has been painted on – to me that makes it waterproof. If left immersed in water PVA will soften – that is different. PVA bond strength depends on many things, not least of which is the surface penetration – not something you get on the base of metal or plastic figure. These are actually part of its appeal. It has adequate strength for most tasks yet is removable by a reasonably simple method. It is also able to be filed and sanded and I have MANY examples that have been painted over. |
| TheOtherOneFromTableScape | 22 May 2013 11:22 a.m. PST |
Perhaps a quick look at Wikipedia might help: link |
| Heisler | 22 May 2013 11:58 a.m. PST |
PVA and wood glue are not that same and there are a couple of varieties of wood glue out there as well.
Elmers White Glue/PVA is polyvinyl acetate
Wood Glue or carpenters glue is aliphatic resin
There are also some wood glues (Titebound III, Gorilla Glue) that are made from Polyurethane |
| GildasFacit | 22 May 2013 2:39 p.m. PST |
There is a wide range of glues for wood but many cheap wood glues ARE PVA based, at least they are here in the UK. Proper carpenters use the specialist glues but many DIYers use the cheap stuff quite successfully for less demanding tasks. |
| MajorB | 22 May 2013 2:51 p.m. PST |
There is a wide range of glues for wood but many cheap wood glues ARE PVA based, at least they are here in the UK. Agreed. When people talk about "wood glue" in a hobby context, they usually mean the PVA based type. I use Evo Stik wood glue and that is certainly a PVA based wood glue.The question is, is that what the OP was referring to as we have assumed?
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