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What is "Blotch" - Definition & Explanation

Uneven absorbtion of wood stain due to changing directions of the wood grain at the surface. Some woods such as pine, cherry and maple are prone to blotch. This is sometimes confused with "figure" where there is a variation in the wood tones when finished. The former is normally a defect and the latter is not. You can prevent blotch by pre-sealing the wood with a "spit-coat" (thinned) coat of shellac, "wood conditioner", use of dye instead of pigment, or by using a gel stain that has

Some other terms

Some more terms:

Brightness or reflectivity of fibers, yarns, carpets, or fabrics. Synthetic fibers are produced in various luster classifications including bright, semi-bright, semi-dull, and dull. Bright fibers...
A unit of thermal resistance. The insulation required to produce the necessary heat to keep an individual comfortable at 21 degrees Centigrade with air movement at .1 m/s. One clo is about equal to...
Also called Monk's cloth. A heavy, rough surfaced, hardwearing, loosely woven, basket weave fabric in solid colours. Sometimes stripes or plaids are woven into the fabric. Made of cotton or linen. It...
The Jacquard loom was the first machine to use punch cards. It uses punched cards to control the pattern being woven. It is a form of dobby loom, where individual harnesses can be raised and lowered...
Resistant to a specified agency either by reason of the physical structure or the chemical non-reactivity of the textile, or arising from a treatment designed to impart the desired...

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