Using clear plastic tubing to protect the teeth of a table saw blade is a great idea. I found a simple solution to the dilemma of slicing one side of the tube straight and safely.
All it takes is a couple of scrap pieces of MDF, a piece of double-sided tape and a blade from a utility knife. The photo below left shows you where to start. I used a brad point bit that is just slightly bigger than the tube I was going to slice.
Just sandwich the blade between the MDF, using tape to hold it in place (middle photo). Then clamp the block in your vice and pull the tube through.
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