How To Mark Spiral, Parallel, and Perpendicular Lines on Pipe or Cylinders I go over a few of the methods that I use to accurately mark on pipe, conduit, tubing, or anything cylindrical. There may be other methods for the same tasks, but these are quick and effective. I hope it helps you on your next cylindrical project. Thanks for watching! PENS/PENCILS AND MARKING: Mechanical Pencil http://amzn.to/2dB6X71 Sharpie Marker http://amzn.to/2edfD5H RULERS AND SQUARES: Stainless steel Ruler http://amzn.to/2db8brB Tape measure http://amzn.to/2ddgDDW Swanson Speed Square http://amzn.to/2eE8BqC KNIVES, CHOPPING & SLICING Self Healing cutting mat http://amzn.to/2dboymd Stanley utility Knife http://amzn.to/2ApZrqC (Amazon affiliate links help support the channel at no cost to you) FOLLOW: YOUTUBE: / makebuildmodifytv INSTAGRAM: / makebuildmodify FACEBOOK: / makebuildmodify FACEBOOK GROUP: / makebuildmodify TWITTER: / makebuildmodify WARNING: This video is only for entertainment purposes. If you rely on the information portrayed in this video, you assume the responsibility for the results. Always think ahead. Every project you try is at YOUR OWN RISK. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.