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A shake (i.e. crack or split) radiating out from the heartwood. heel The corner of a chisel, knife, or gouge bevel which meets the back of the blade and polishes the cut. holdfast. Also called a hold down. A hold-down iron fitting into a hole in a bench and tightened or loosened by hammer taps. hollow grind A concave bevel on a chisel, gouge ...
Spackling paste is comparable and contrastable with joint compound as both look similar and serve the similar purpose of filling in low spots in walls and ceilings. [3] The chief differences are that spackling paste typically dries faster, shrinks less during drying, and is meant for smaller repairs, and not for a whole room or house.
Drying time is inversely related to thickness and, to some extent, the width of the lumber. Whether the lumber boards are quarter-sawn, flat-sawn, or bastard-sawn (mixed-sawn) Sawing pattern influences the distortion due to shrinkage anisotropy. Permissible drying degrade Aggressive drying schedules can cause timber to crack and distort.
Moisture can also cause wooden lath to expand and contract, causing the plaster around it to crack. [5] Additionally, failure can also occur in the plaster keys. Over time, the keys can deteriorate and crack, weakening their ability to hold the plaster onto the lath. [12] The addition of hair in plaster helps to prevent this by adding strength.
Plaster can be relatively easily worked with metal tools and sandpaper and can be moulded, either on site or in advance, and worked pieces can be put in place with adhesive. Plaster is suitable for finishing rather than load-bearing, and when thickly applied for decoration may require a hidden supporting framework.
A crack or cracks propagating from near the edge of the log towards the centre, usually along the line of the medullary rays, causing the wood to shrink more at right angles to the medullary rays than along them, causing warping of anything made from the wood. The cause is often rapid or uneven seasoning, causing the outside of the log to ...
The tools used to plaster walls. Plasterwork is construction or ornamentation done with plaster, such as a layer of plaster on an interior or exterior wall structure, or plaster decorative moldings on ceilings or walls.
Typical French craquelure in a portrait from c. 1750, larger and less regular patterns, with curving cracks. Painting systems are composed of complex layers with unique mechanical properties that depend on the type of drying oil or paint medium used and the presence of paint additives, such as organic solvents, surfactants, and plasticizers.