Not sure where he came up with that .The guy at the shop said hand drills will only do 13mm wide holes due to the torque in them.
Why and where are you drilling a 35mm hole ???
If they set you up with a step bit , drill small first . One down from what you think you need . Can always go bigger .I took this thread to a diy store and they agreed with you all and got me the items.
it’s for the air intakes. I’ve got 35mm wide copper tube that will be going down both sides and into the bottom of the drum, under the coal basket.
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