Deburring Electric Metallic Tubing (EMT)

[rgsparber]

If you are running a lot of ½ inch conduit (EMT), removing all burrs can get tedious. Yet, one burr can cause the insulation to be cut and ultimately cause a fire.

I propose using a step drill to deburr the inside of the EMT effectively. A flat file is still used on the outside.

If you are interested, please click here.


Your comments are welcome. All of us are smarter than any one of us.


Thanks,

Rick

[NeiljohnUK]

I use a cone drill rather than a stepped cutter when deburring tubing, and an internal/external deburrer on the outside.

[rgsparber]

I use a cone drill rather than a stepped cutter when deburring tubing, and an internal/external deburrer on the outside.

I chose a step drill because that is what I had on hand. In hindsight, I think a cone drill is more likely to leave a sharp end if the user goes in too far.

Can you say more about the “internal/external deburrer?” Is it like the one I show on page 2?

Thanks,

Rick

[NeiljohnUK]

No, one of these https://products.swagelok.com/en/c/d...ol/p/MS-TDT-24

[NeiljohnUK]

I also have the original battery powered version of this tool.

NOT Rebadged Swagelok.

[rgsparber]

That is a very nice tool! So, how do I make one :-))

Rick

[BuffaloJohn]

I use one of these:



https://www.kleintools.com/catalog/c...ng-screwdriver

There is also this:



https://www.kleintools.com/catalog/p...conduit-reamer

which I think I will have to pick for when I have to a bunch of ends.

What I like about these is that it gets the inside and outside at the same time, I can do multiple sizes of EMT, and I don't have to think about drill sizes.

[dbat74]

WOW brilliant !!!!

[dbat74]

Good choice.