One suggestion, and this is how other larger wiki's tend to operate. Only post a record in a definitive narative if the topic is widely agreed upon. If various parties have a different way, material, or believe something came to be from different historical contexts make sure to note that as you add information. Otherwise you can start some nasty arguments among various schools of practice. One instance would be what the best material that Widget A can be made out of. Instead of writing what one thinks is the best material, one could write.
Widget A is made out of Material B by various blacksmiths as it's strength and resistance to (yada yada) are believed to be ideal for Widget A's usage.
If multiple views are out there, enter them in weighted by the percentage of those that share that point, without referring to the lesser as 'wrong' in any way. Regardless of your own personal opinion.
-MJ