Under continuous development – newer posts at the top, oldest at the bottom of the article
Update 2019 – I’m trying this design now, it’s 4mm hardwood ply. These seem to be less complicated to make for me with less depth of routing needed. There’s ones mounted in both the top side of the base box and the under side of the middle brood box. When the boxes are placed together there’s a gap between the split bars. Bees tend not to build structure in a small gap like that so it’s easier to separate. There’s also a half circle cut out so there’s still a gap for them to move along the end of the box.
Update 2018 – I’m still doing them the same as below but am just gluing them and no longer putting screws in. I figure the glue holds them well and the screws may not be necessary. I think the idea of good design is to keep things simple.
Update 2017 – I’m making the brood support bars 10mm thick x 30mm wide and am just routing a 11mm deep section from the inside edge so the bars sit 1mm lower than the surface. These are glued and screwed in.
Update – 2016 – I think I have the cypress brood supports a lot neater and simpler now. I’ve made them wider and thicker than previous designs. 10mm thick x 30mm wide.
2015 – Below – first try at retro fitting the Cypress Brood Supports
Below, Aluminium Support Bars
2014 – Below – My first Galvanised Strips