Sizing fillets with glass tape tabbing Tip

[oceansky]

When building, the question most often asked is, what size fillet do I use when tabbing with glass tape? So I thought I'd put this together.

The depth or throat of fillets should be equal to the thickness of the thickest piece of plywood being fastened and should extend outward from the centreline of the joint 1.5 to 2 times it's thickness.

Here I've provided fillet blade radius for various thicknesses in plywood.

As an example:

6mm plywood will require a minimum fillet blade radius of 14mm ( diameter of 28mm- refer diagram above) Naturally this is to be applied to both sides of the joint to be fastened, and tabbing to be applied ie 200 gm cloth or Double Bias.

I hope this helps