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Step by Step Tube Notching on Horizontal Milling Machine

Picture of Step by Step Tube Notching on Horizontal Milling Machine
A quick demonstration of the basic notching operation on a Horizontal Milling Machine.
 
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Step 1: Cutting Notch with Ordinary Hole Saw -

Picture of Cutting Notch with Ordinary Hole Saw -
Center tubing to be notched on appropriate jig/holder.  

Bringheli jig being used here setup in a simple mill vise.

Centered the tubing using and edge finder then moving table to the center ((edge finder / 2) + tube diameter/ 2)

Step 2: Video of Tube Notch on Horizontal Milling Machine.

Picture of Video of Tube Notch on Horizontal Milling Machine.

Step 3: Finish Notch with File

Picture of Finish Notch with File
Tidy up the initial cut from Milling Machine with a half round file. 

Step 4: Notched joint ready for Brazing

Picture of Notched joint ready for Brazing