Rib Square

for those us that still balsa bash you will all know what this is for I haven't printed it yet but will do shortly so I might have to make the odd adjustment if you have any comments would be happy to hear them. gaps are set at 1mm, 2mm and 3mm so don't scale up and rib height is upto 40mm which covers upto most 40size planes. any comment would be happy too here them