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Editing Step 5 —

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Hold the blade in the PTFE cutter jig with your thumb.

Insert the PTFE tube all the way in the cutter jig until it is pressed against the end stop.

Rotate the tube clockwise (looking from the back of the cutter jig) to chamfer the end.

Rotate few turns. It should create nice chips of PTFE.

Sometimes it can be difficult to turn the PTFE in the cutter jig. In this case, here are some tricks to make it easier:

Use a longer PTFE tube.

Use a kitchen gloves.

Use a small piece of masking tape.

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