This can be difficult at times but with some practice these pieces of du.
How to assemble round sheet metal duct.
Run the tool around the end of the duct so that you have multiple parallel crimps.
Assemble the metal ducting like a zipper when assembling pipe start at one end and work the seam together like a zipper.
Nevertheless we were able to make all kinds of rectangular and round ducts and all types of fittings.
Yes we had a hydraulic guillotine shear sheet metal brakes slip roll machine hand tools and this about it.
Insert the crimped end of the round duct into the uncrimped end of the next round duct.
Use your leg a workbench or the ground to support the back side of the pipe.
Use one hand to keep the two edges close and the other to apply downward pressure.
It may seem confusing adjusting a r.
That piece should slide right into the uncrimped piece giving you a secure connection to tape.
A great video that will show you how east it can be to put together round duct work.
In this video we show you the best and safest way to cut a round hole into a can or rectangular duct.
The str 750 square to round duct former from roper whitney has revolutionized square to round duct forming.
Here we show you how to adjust a round sheet metal duct elbow for 90 45 35 or from 0 to 90 or anything in between.
Select duct pieces for the connection that have crimped and uncrimped ends.
How to connect duct work.
Duct fittings can be made quickly and easily ensuring production in other areas is not.
In 1986 i use to work at the sheet metal shop where we made all the ducts and fittings almost exclusively by hands.
You ll need a drill sheet metal snips a start collar.
If one end is not crimped you must crimp it by using the.