Here you see a collage of images of the cab. It has four 85mm air holes which I drilled with my new AEG Power drill. Next step is to cover the holes with some eloxated steel.
A nice tip if you want to avoid burning. First make a 2mm deep cut, then use a 8mm drill to drill a hole flush to the cut you just made. Now you have an exit for the MDF when you drill. Voila! No burning.
A well known issue is that you should avoid using a battery powered drill for hole drilling. The momentum ends up killing the internal brushes of the tool, and worst case scenario is a ruined drill. Go for a corded power drill for this kinda work.
I rounded the edges of the air holes with a 3mm router bit on my Bosch 1400w router. Then i sanded with fine grained paper. In danger of repeating myself, routers are wonderful tools tools and I find it strange that not more people have this in their tool collection! Might not be a tool you use every day, but when that special project comes around it´s a gem! PS: Remember to buy quality router bits, and remember to rout in the correct direction to the rotation of the bit.
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