Time needed: 20 hours.

1. Buy Sugru.

   It’s fantastic stuff even if you don’t know what you’ll need it for yet.

2. Buy aluminium.

   Make sure it’s thin enough to cut easily.

3. Cut

   Cut your aluminium to size. You should be able to do this with a decent pair of scissors (aluminium is very soft). Make it long enough to reach all the way across the top of your toaster.

4. Shape

   Roll the Sugru out into a long cylinder using a stiff flat surface like a book. (glossy covers will work best) Use your piece of aluminium as a length guide when rolling, make it slightly longer.

5. Mark

   Mark a line on your toaster that runs directly down the middle.

6. Lay

   Lay the Sugru along the line and push it down gently.

7. Place aluminium

   Carefully align the edge of the aluminium with the line of Sugru and press down until it bottoms out on the top of the toaster.

8. Secure

   Gently press and smooth the Sugru into the corner on both sides with a slightly oily finger (it stops it sticking to you).

9. Support

   Put two heavy objects on either side of the sheet and adjust until the sheet is vertical.

10. Wait

    Wait until it is cured.