They cost about £20 to buy ready made but they're not exactly rocket science to build. You can make the Rhombus part from wire mesh and woodem moulding but it's probably cheaper ands a whole lot simpler to just buy the Rhombus escape as a plastic part. I bulk ordered 20 Rhombus Clearers, I don't need that many but have a vague plan to sell the majority on eventually.
|Yeah, it's a photo of a piece of plywood. Gripping stuff..|
A quick visit to The Wood Shop sourced me some plywood and three battens. Rather than use a tape measure I opted to just use one of my old clearer boards and a right angle to mark out the plywood for cutting. I cut is with a handsaw as it was a little late in the evening to be firing up the tablesaw.
|More bits of wood, some brass panel pins and a cat.|
The battens I held together so I could cut all three at the same time. Cutting all 12 side pieces one at a time would've taken longer and the way I'm making them it doesn't matter much if I was a couple of millimetres out.
|Boards with sides attached|
|Hole saw. Horrible thing.|
|Two finished boards|
The first pair of Rhombus escapes I bought were made by Thornes, the new ones are from a french company called Nicot who specialise in plastic beekeeping equipment. Apart from the colour and some minor differences along the plastic edge with the screw holes and logos on they seem to be exactly the same as the previous ones. They're so similar I do wonder if someone actually made a mould from someone else's product, we'll never know. Anyway now I have five clearer boards which should be more than enough for my needs this year.