A Hand made custom Knock tube from David Faulkner of Extract Coffee Roasters
The base is a slab of lime wood - planed flat, sanded and finished with epoxy
The galvanised tubes ,the mounting flange and the clamp all come from a
10kg toper. They are complete with old roast residue.
The 45 degree tube that has the knock bar is through it has been shortened.
Hand rolled wire edge to make a neat profile.
The knock bar is located with a bar that came off the an old probat. It was
part of the chimney.
The brass wing nut is off the probat too. It was part of the original gas
fitting. It’s been drilled and tapped to fit the bar.
All the bolts and washer are off the old probat, they are parts that where
left over from an upgrade.
The leather belt that is round the base was shortened to fit. It was part of
the old cooling fan drive belt ,off the probat.
The rubber part of the knock bar is a piece of fuel line.