Bevel mount cutting systems

How to cut a bevelled edge window mount using a Duo System

To Cut the Mountboard Sheet Down to Size

Set up the system on a firm work surface and remove the Guide Rail. Take out the Cutter Stops, turn the Guide Rail over and remove the Mount Stop by slackening the screw with the screwdriver then unlock the cam. Now replace the Guide Rail and insert the sheet of mountboard face down under the Guide Rail and up to the Squaring Pins. Measure out the correct size using the tape measure. Remove the Safety Guard and hook the Vertical Cutter onto the Guide Rail and push away from you in one smooth action.


Be positive – don’t hesitate, otherwise the blade may flex resulting
in a curve at the end


The blade is very sharp so always remember to replace the Safety Guard after each cut



The groove in the Base accommodates the blade of the Vertical Cutter as it cuts. It is only for use with the Vertical Cutter – not the Bevel Cutter.

To Mark Out the Window Border

With the mountboard face down, mark out the window border in pencil to provide a cutting guide. Set the measurement of the Marker Gauge to the required width for the border and draw four lines If you are cutting a dropped border (that is one where the border at the bottom is wider than at the top and sides), you will need to adjust the Marker Gauge to mark out the wider border.


Place the mountboard on the worksurface just over the edge and keep the yellow block firmly up against the side of the mountboard when drawing the line.


A hard pencil, say 4H, helps produce the fine lines needed for accurate cutting.

To Cut The Bevel Window Aperture

The Bevel Cutter is used to produce the pleasing angled cuts which are the feature of quality picture mounts.

Insert the Mount Stop into the back of the Guide Rail at a comfortable cutting position, taking into account the size of the mount. Replace the Guide Rail onto the Base. Place the SprintMat under the Guide Rail and up to the Squaring Pins.




Using the SprintMat is essential when bevel cutting as the blade must cut into a supportive substrate to achieve a clean, accurate bevel cut




Insert the marked up mount to be cut on top of the SprintMat and up to the Mount Stop. Align the pencil line with the cutting edge of the Guide Rail.
Place the bevel cutter onto the Guide Rail and insert the two Cutter Stops. Before
cutting, line up the centre of the V with the finish line and lock the top stop; slide the
cutter back and line up the centre of the V with the start line and lock the bottom stop.




The cutter stop is set by positioning the centre of the V on the intersecting line and then locking it in position






Place one hand on the Guide Rail for your support. With the other hand keep the Bevel Cutter held firmly up against the bottom stop, place the palm so that it covers the top of the cutter and use the heel to rotate the blade fully into the mountboard and then push the cutter along to the other stop in one smooth action.




ensure the SprintMat always supports both the rail and cutter





Manually retract the blade fully and take the cutter off the Guide Rail. The cutter stops of course remain set for the opposite long side (if cutting a rectangle and for the other three sides if cutting a square mount). Turn the mount around, check the pencil line against the Guide Rail and repeat the cut. Reset the bottom stop and repeat for the shorter sides if cutting a rectangular mount.

In just a few minutes you will have produced a professional quality mount that will set off any photograph, painting or picture.