Found a photo of a toy grader for sale on Etsy. Liked the style, thought I could make one myself, with a few modifications, of course.
Original image found on etsy, which inspired the design. In my version, the blade is a different construction method. In a later version, I built the cab a different way as well, using dowels.
This is an isometric view of the initial design.
An exploded isometric view showing how the parts fit together.
Plan of the parts with dimensions.
The way the cab is made in the original design, I would imagine using a mortising tool or at least a forstner bit in a drill press. Not having either of those tools, I came up with a different solution as shown below:
Step 1 – Drill four holes in a block of wood. Cut the block in half along the line shown red. Note the optional holes for the alignment dowels – that’s for glueing the block back together.
The block is cut in half, saw cuts made in preparation to chiseling out the waste, much the same way that we would make a half lap joint.
Showing the cab/block ready for re-assembly. The holes are for alignment dowels.
The cab assembled. This is a rather involved and convoluted way of creating what was meant to be a simple toy, so it was back to the drawing board.
A new improved version, free download.
Hope you make one, and if you do, let me know.
-- Tony, Australia, http://www.wooden-toy-plans.com/