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Cutting:
Always place coving length on flat surface, concave surface upwards. Use a small toothed wood saw with the blade flat against the sloping face of the WonderMitre guide.
Coving a standard wall (Internal Mitres)
Example length 13’
1. You will need 2 lengths of coving. Position WonderMitre guide at extreme left of first length so that guide locating slots rest on coving edges. Saw the left side of the guide. Left-hand mitre A.Then position WonderMitre guide at extreme right of second length and saw right side of guide. Right-hand mitre B.
2. Fix left hand mitred coving strip in position with adhesive. Hold right hand mitred strip to wall, mark where it overlaps fixed strip, and trim overlapping straight end to length. Finally, use a good filler to fill in any small gaps.

3. For very long walls requiring more than two lengths of coving, position left and right hand mitred strips, then add extra length between and trim to size.

Coving a projecting wall or chimney breast (External Mitres)
1. Take dimensions of projecting wall or chimney breast. Select lengths of coving for each side which are approximately 12” longer than required.Projecting walls and chimney breasts are coved using a combination of internal and external mitres as diagram indicates.

2. To cut left-hand external mitre (C), position guide at extreme left of strip as shown and cut to right face of guide. To cut right –hand external mitre (D), position guide at extreme right of strip as shown and cut to left face of guide.
3. Start with returns of chimney breast or projection. Cut appropriate internal mitre to fit with back wall coving. Hold in position and mark return length on lower edge of coving. Using this mark cut external mitre C or D as required.

NB Do not fix returns or front face coving strips until all mitres have been cut and checked for fit.
4. For front face of chimney breast, pre-cut one end of strip with appropriate external mitre, C or D. Hold in position and mark front face length on lower edge of coving. Use this mark to cut other external mitre.

Download the Wondertex Guide To Coving
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