Hello Lesilee! generally, Canvas Boards are folded around the edges and sealed at the back, so by cutting the board, you risk delaminating the canvas from the board.
If you really wanted to try this, you could cut the borad to your required size with a very sharp DIY knife blade then try to re-seal the edges with strong tape, but try this on a painting which is not required any more.
Lets know how you get on.

Best wishes,


Steve Williams
RSC Wigan / Warrington / St Helens

Thank you Steve. That was my suspicion and fear so i think that i will just have to learn to size my paintings more accurately :-)