How-To Cut & Crimp Snap Lock Pipe - The Duct Shop

In this video we show you how to cut and crimp a piece of snap lock pipe to your desired length. Prior to assembling the seam of the duct, measure the distance required and draw a line with a marker around the ductwork. With a pair of snips, accurately cut along your line until you've cut around the entire circumference. To assemble the duct, snap the seam together. If you need to crimp that end, use a pair of hand crimpers to crimp around the entire piece ensuring the side of the crimpers with the most blades is on the outside of the duct.
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[@a.tanks9754]

Thank you for this informative video that I needed. The video was step by step clear and cut and to the point.

[@danmannon6856]

Great videos. Clear and concise.

[@MicahFunk]

Normally the crimped end faces downstream, not towards the airflow source. That way the crimped end becomes more of a funnel for the air entering the next section of pipe, and no raw edge sticking out to restrict airflow.

[@richardovercash9374]

excellent, problem solved!!!!

[@user-ve8sn5rz2u]

If you use m- 12 or m-14 snips you can use both pieces of snp No waste

[@scottb.innovations4386]

thank you

[@rdharles8536]

The larger number of blades always goes on the INSIDE, not the outside.

[@dumptruckintruthduke]

It absolutely makes no difference.

[@akaredcrossbow]

@@dumptruckintruthduke my experience, 2 on the outside is cleaner, tighter to the other pipe and smaller crimps. If the other pipe for some reason is tighter than usual I usually put 3 on the outside and that brings the crimp in towards the center more. Now I’m going to have to see the difference tomorrow.

[@sticksnstones7716]

Tin knocker here....you’re using your crimpers backwards.....def a shop guy

[@dumptruckintruthduke]

Lol, shop guy isn't doing it with a hand crimper. In 22 years, never have I seen the direction of the crimper make a bit of difference though.

[@TheSoloAsylum]

I love when an office boy does a demonstration and does just about everything wrong.

[@hermyherm365]

My flex duct pipe is under my house by a couple of weeks ago a dog managed to get under my house and rip it to shreds he ripped off a good 2 feet outta it what should I do to repair it ???

[@airwags]

re-run it in flex, it's cheap and pretty easy to do or I would suggest re-running all of your runs in hard pipe. I'd suggest insulating the duct but its not necessary.

[@jasonzee4561]

Fix it and slap the dog

[@ynot6781]

Stop using straight snips , use either right or left offsets , makes your cutting much easier and cleaner , and your using the crimper backwards ! Make sure you have the two prong outwards , facing you By you putting the 3 prongs on the outside.....backwards .... it makes it more difficult to connect actually growing the metal in the opposite direction you desire .

[@dumptruckintruthduke]

You can not grow the metal by crimping it. You take a set circumference, and increase the distance the metal follows by changing the shape, this will always reduce the circumference

[@BarnardClangdeggin]

He didn’t use duck tape

[@johntempest267]

I'd snap it, grab my angle grinder w cutting disk, and finish before you start to hand cramp.

[@ynot6781]

I'll race you , my cut will be faster and far more clean , the guy in the video has no idea what he's doing or talking about

[@Relaxitsonlyacomment]

a pair of midwest reds or greens would have saved you soo much time. just one cut!

[@ynot6781]

Red or green offsets , no need for straights And he is using his crimper backwards

[@jennholden-myers1631]

Would have been nice for a close up. Didn't help at all for someone who knows nothing about this type of stuff