Ok, I concede defeat. We are dealing with collective nouns (something that should have been mentioned earlier), and it is true that the normal rules of grammar do not always apply here. There are certainly grammar sources that will argue that there are rules concerning where you should/shouldn't use singular/plural verbs with collective nouns. Eg: http://www.grammar-monster.com/lessons/singular_plural_%20collective_noun.htm and http://www.chompchomp.com/terms/collectivenoun.htm But these rules are so convoluted and unrealistic, that they appears to be an attempt to impose logic post facto to a situation that will not allow a single, simple, solution. In the first, the notion is unity so a singular verb is appropriate, in the second the notion is disunity so a plural verb is used. As a native BE speaker, I would say that notional agreement is more usual in BE. Sometimes we treat groups as singular and sometimes as plural. Text books often say that formal agreement is more usual in AE, but I am not entirely convinced. If you have multiple projects lined up or you’re working on a large-scale project, consider buying wood in bulk. Many wood suppliers offer discounts for purchasing larger quantities of wood. This can significantly reduce the overall cost per board foot, making it a cost-effective option in the long run. 4. Opt for Lower Grade Wood Another major advantage is that there are more grades to choose from, for example A 1 Face will be cheaper than Prime Quality because on one face will be prime whereas the reverse will be light character. This is ideal if you are using for something where only one face is seen like cladding or furniture.

Joining wood - Practical guide: Assembling components - BBC Joining wood - Practical guide: Assembling components - BBC

Being able to work with small offcuts can help you save money by utilizing leftover wood from previous projects or scraps. Learn techniques for joining small pieces together to create larger panels or incorporate them into smaller woodworking projects. Formal agreement is the strictly grammatical agreement between the verb and the subject: a singular subject must be matched by a singular verb. Notional agreement is more flexible, and allows the verb to matched to the idea - notion- of the subject. For example Odd number of layers of veneer glued at 90 degree angles for strength, aesthetically pleasing outer layerEpoxy resin (ER) - Used for joining woods to other materials such as metals and plastics. It is waterproof but is a two-part glue that must be mixed up immediately before use. A better source is: http://oxforddictionaries.com/us/words/matching-verbs-to-collective-nouns-american and it pretty much says what was said in the original comments, so consider me to have withdrawn from this argument in shame-faced defeat ;-) When it comes to woodworking projects, finding high-quality wood at an affordable price is essential. Whether you’re a beginner or a seasoned woodworker, here are some tips to help you shop for wood on a budget: 1. Research Local Wood Suppliers

pack of wolves run through the woods - English grammar - A pack of wolves run through the woods - English

The best advice of all is probably: 'if in doubt, reword the sentence in a way that avoids the problem'. Durable, easy to machine, high sap content gives it good water resistance, used for exterior building and flooring If you’re not concerned about having flawless wood surfaces, opting for lower grade wood can save you money. Lower grade wood may have knots, blemishes, or other imperfections, but it can still be used for many woodworking projects. These imperfections can even add character and uniqueness to your finished pieces. 5. Attend Woodworking Expos and Trade Shows The verb, run, agrees with the plural noun, wolves. In other words, all the wolves (none excluded), run through the woods. The implication being that there are many wolves in this group. While in 'real life' you'll hear the other version quite often in informal spoken English (relating to things that are alive), it is not correct grammar any more than it would be to say.I disagree with @choster and @Peter Shor, the gramatically correct sentence in both American and British English is Polyvinyl acetate (PVA) - Used as a general purpose woodworking glue, and some PVA adhesives are water resistant. This is most commonly used to join wood but can also be used with papers and boards.