crown board: clearer board- urgent

[burren]

I want to use a crown board, kinda of as a clearer board as I dont have enough of them and the weather has turned warm and I was concentating on getting more q excluders, so didnt more of either board

Anyway.... someone might just be able to cut me some quick ones out of ply right at this minute and having no hive equip where I am right now and not knowing the size that it should be on a national....
please help me out with the measurements I need
Many thanks

 

[MuswellMetro]

I want to use a crown board, kinda of as a clearer board as I dont have enough of them and the weather has turned warm and I was concentating on getting more q excluders, so didnt more of either board

Anyway.... someone might just be able to cut me some quick ones out of ply right at this minute and having no hive equip where I am right now and not knowing the size that it should be on a national....
please help me out with the measurements I need
Many thanks

46cm square or 18 1/4" if using imperial, edge with 18mm x 9mm or 10mm strip wood for a crown board

for a clearer use the 46cm square and adjust the beespace strip to take a clearer and beespace under the clearer see cushmans site for homemade candian clearer or Roger patterson vortex type which roger has added to the site since Dave died

http://www.dave-cushman.net/bee/vortexescape.html#roger

 

[burren]

ta muchly, MM