Hi all first post on here. Quick introduction I currently have 13 years experience in the plumbing trade(not counting helping my pops when i was a kid.) I do mostly light commercial with some higher end residential thrown in. Back to my issue. Im currently doing a project with LOTS of 4"NH pipe to run. Usually i would use snap cutters myself but i have a 3rd year apprentice with me who can't seem to cut straight to save his life. So instead i put him on a chop saw. The blades keep glossing over so he has to power them through the cut which is causing the blade to run. Im looking for opinions on either blades that seem to have less issues glossing over or any tips to stop the running of the blade. Also has anyone seen a version of the Cast iron reciprocating blades for a chop saw?