OSMO | Decking Oil Massaranduba 750ml 014 Type_Hole Saws but keep in mind that

but keep in mind that this is a pretty healthy chunk to cut at one time and may require a lot of physical exertion

Unlike metal squares

Smooth interior wall for increased airflow characteristics

Because carbon brushes are wear items

OSMO | Decking Oil Massaranduba 750ml 014 Type_Hole Saws but keep in mind that750ml Massaranduba Decking Oil Natural oil based protective finish for exterior wood that does not peel, crack, flake or blister Microporous, breathable finish allowing the wood to breath and reduces the risk of swelling and shrinkage Water repellent, extremely weather and UV resistant Easy to apply as well as renew, no sanding or primer necessary When dry, the finish is safe for humans, animals and plants and is suitable for childrens toys as per EN