The Johnson Notcher...this is a basic notch tool that Church
 put together out of old scrap laying around. These tools are
 either very expensive or garbage!! Looking at the junk from most
 import tool locations, including "Hubbaflait", these machines
 are basically wasted money.
 You can build a good unit yourself but you need to find a
 supplier of "thick wall" tubing. As an example: you can
 purchase a 2 inch ID tube with a 2 1/2 inch OD from e-Bay.
 You can also purchase a 1 1/4 ID "thick wall" tube
 from most local suppliers. Prices are reasonable so you can build a
 simple notch tool for under 20 bucks, but remember you also need
 a decent drill press, flat vice and fresh hole saw with the drill mandrel.
 I managed to find an old drill press head that used an 1 1/2 ID
 pedistal mount. I cut off the mount and secured it into my 4 inch
 flat vice. Now I notched all the tubes Gary needed to upgrade
 the old chassis. Since the roll cage supports were not welded to the
 top edge of the frame, we decided to incorporate additional
 tubes on the frame rails. The fabricator's over-use of gussets was obvious.
 Most low price "tube-notch" machines are going to use utilize
 your drill press, so the result will look very much as shown here.
 Clean up with a decent "flap wheel" will finish the job. May I remind you. The
 hole saw must match the tube you are welding to, not the tube
 you are notching.
 

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