Average Dried Weight: 35 lbs/ft3 (565 kg/m3)
Elm grain is interlocked (making it very resistant to splitting). With a somewhat coarse, uneven texture.
Elm is susceptible to insect attack. Living trees are susceptible to Dutch elm disease. Elm is rated as non-durable.
Elm (rock elm, American elm) has excellent bending qualities; it's used in all types of furniture, and especially for bentwoods.
Elm is also typically used for Boxes, baskets,hockey sticks, veneer, archery bows, and paper (pulpwood).
Elm Can be a challenge to work because of interlocked grain.
Planing can cause tearout and/or fuzzy surfaces.
Poor dimensional stability.
Glues, stains, and finishes well.
Responds well to steam bending, and holds nails and screws well.
Steam Bending is a term used to describe heating wood to boiling point to soften it, so you can bend/twist/squash it into new shapes.
The plant-cell-walls in wood are a composite of about 50% Cellulose Fibers (what paper is made from) and 30% Lignin (a natural thermo-plastic). If you heat Lignin to boiling point (100 degrees Centigrade) it softens enough to allow the cellose fibers to move in the wood to enable the whole piece to yield to a new form.
When the wood cools the lignin bonds set again and when the wood dries (below 12% moiture content) the bend becomes permanent.
Because Dutch elm disease has destroyed so many trees, elm has become a rare wood. This makes it hard to source and expensive.This wood species is not listed in the CITES Appendices or on the IUCN Red List of Threatened Species. Elm is a hardwood therefore a slow growing tree, this means it should be sourced from sustainably managed forests.
Wear a dust mask while sanding to avoid dust inhalation which can cause short and long term damage to the lungs.
When steam bending wear protective heat resistant gloves and clothing.