On 21 Jul, 17:26, "Mike....."
wrote:
I need strips of triangular wood to finish behind worktops, the DIY shed
only had small stuff, i need something like an inch x 1 1/2 inches, any
suggestions where to look for it?

Make it, or have it made.

_Don't_ rip it down by chopping something in half. There's a real risk
of getting harpooned!

Instead take a wide strip that's wide enough to work with safely, and
rip triangular strips of the edge of it. Run the wide stock against
the fence, using a push-stick. Yes, you'll need to re-adjust the blade
tilt twice for each strip.