Sunday, June 12, 2011

Wood Fenders 1

Heather recently got a gorgeous new bike, but for some reason it didn't come with fenders. We are now going to try to bend a set out of wood to keep her and her bike dry in what has been a very rainy Toronto spring.

The fenders will be lamination bent, which means that multiple layers of wood are glued together and then set to cure on a form. When the wood is taken off of the form, the layers are held in place with the glue and keep their shape. This type of wood bending is commonly used in furniture (think IKEA) and boat building (think of a boat),

The Fender Form

The form was made from laminated plywood with a backing strap for applying clamping pressure to the bent wood. The contact surfaces were then covered with gloss white adhesive vinyl so that any excess epoxy will not bond the fenders to the form.

Wood on the Form.

The first attempt will use three strips of 1.5mm thick Canadian ash. The ash is actually the off cut wood from the bent wood table that we made last year. Good thing I was too lazy to clean out that part of the workshop.

The strips of ash were covered with epoxy and then placed on the form. Clamps were applied from the center outwards, and the excess epoxy was cleaned up as needed. The epoxy will take around 24 hours to harden, so we will know how it worked out tomorrow and whether 3 layers of wood will have enough rigidity.

-Scott