In some decorative applications, wood with knots may be desirable to add visual interest. In applications where wood is painted, such as skirting boards, fascia boards, door frames and furniture, resins present in the timber may continue to 'bleed' through to the surface of a knot for months or even years after manufacture and show as a yellow or brownish stain. A knot primer paint or solution, correctly applied during preparation, may do much to reduce this problem but it is difficult to control completely, especially when using mass-produced kiln-dried timber stocks. COUNT 5
QSN1 What positive visual component can knots sometimes add to decorative pieces? ANS1 interest QSN2 What term is used to describe what knots can do to affect the finish of things made from wood even when they've been painted? ANS2 bleed QSN3 Is bleed easy or difficult to control? ANS3 difficult QSN4 The stain from a knot bleeding is usually brownish or what other color? ANS4 yellow QSN5 In what stage of processing does knot primer need to be applied for maximum effectiveness? ANS5 preparation