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Build Materials

Page history last edited by Alex Finnegan 8 years, 10 months ago

I will post some helpful links below as some participants may not have been encountered materials used in our projects,.

There are some great timber calculations around, I especially like this link

http://arbtalk.co.uk/forum/forestry-woodland-management/13148-timber-weight-m3.html

with the relative weights of different volumes of seasoned and un seasoned timber.

This is an american link but it gives a nice overview of pricing lumber.

http://nnrg.org/files/pubs-and-resources/measuring_timber_products.pdf

Natural wood preservatives

Gum and resin are natural materials which are taken from pine trees, either by scratching the bark of a standing tree so that the resin can be collected.

Or alternatively if the trees are felled and burned in a special low temerature furnace a type of tar called Stockholm Tar can be produced.

here is a great page showing all the different types of resin from around the world

Epoxy is a 2 part, "glue" which comes in liquid form and when mixed together forms a relatively hard plastic or "resin".

Under the brand name of SP this company supplies most of the European boatbuilders with their resins and fibres for laminating and gluing. From Wind turbine blades to Formulea 1 cars. Carbon Fibre reinforcent cloth has been around for about 40 years but it is still regarded as "Hi-Tec". One of the most valuable properties of Carbon Fibre encapsulated within a resin (plastic) "matrix" is that, with careful quality control, the maximum material strength can be achieved again and again.

http://www.gurit.com/

Here is the second Epoxy supplier, based in USA West Systems have evolved a system of wood lamination and also conventional Glass Reinforced Plastic (GRP) lamination.

http://www.westsystem.com/

Health and Safety take the highest priority when working with epoxy, under close supervision the magical properties of this material can demonstrate how strong modern materials can be for their given weight.

With these two part Epoxy systems it is the hardener which is the most corrosive and care must be taken to avoid contact with the skin and eyes. Always wear gloves and an apropriate vapour mask. Safety must be first and last on our list.

ALWAYS wear your Personal Protective Equipment (PPE).

http://www.westsystem.com/ss/how-to-prevent-overexposure-to-epoxy/