Raking+Moulds

=Raking moulds = Raked moulds are moulding that are required when two planes or surfces meet each other at angles other than horizontal and vertical such as in raked ceilings: This means that to successfully apply maouldings n the corners to cover gaps accurately you will need to have three specific moulding. The first may be an off the shelf moulding with squared back corners to fit inthe squared angle of the side wall and ceiling junction while a different profile is required for both acute angle at the top and the obtuse angle at the bottom. Download and view the power point presentation to help you understand the process. 

[[image:raked_ceiling.JPG]]
RAKING MOULDS POWER POINT:




Step 5.


These two new mould shapes will have to be machined by a specialist joinery company with the appropriate machines. You will need to pay for the grinding of special cutters and machine set up costs.

=Developing the true mitre angles= For top (acute) and bottom (obtuse) moulds requires teh tradesman to develop the angle so you can get a view of the face of the angle at 90 degrees. these are the basic steps: Step 1. Set out a plan view of the mitred corner.



Step 2. Create a horizontal line and transfer the corner of themite with compass to the horizontal plane. Step 3. Project the line up to the plan view as shown. Step 4. Draw in new true mitre angle. A sliding bevel is then set to this angle.

The same process is followed for the top edge bevel on the top (acute) mould. You can download and view the power point below for more information.

Setting out the true mitre angle power point:
=Proportional enlargement or reduction= Proportional enlargement or reduction of mouldings is done when the same moulded shape is required but needs to be reduced or enlarged to maintain a perspective view withing a design. 

View this power point to see how the new shape is developed.