Best way to get a clean cut on a wire reinforced hose?

Sep 24, 2018
3,043
Catalina 30 MKIII Chicago
I need to cut off a couple inches of muffler hose in a confined space. What's your preferred tool to get a nice clean cut?
 

jssailem

SBO Weather and Forecasting Forum Jim & John
Oct 22, 2014
22,161
CAL 35 Cruiser #21 moored EVERETT WA
During the install of my exhaust hose, the mechanic and I used a sharp serrated knife on the hose and wire dikes to snip the imbedded wire.
 

jssailem

SBO Weather and Forecasting Forum Jim & John
Oct 22, 2014
22,161
CAL 35 Cruiser #21 moored EVERETT WA
angle grinder
That could develop a foul smelling smoke as it burns its way through the hose. Perfect is not needed. The hose generally fits over a long pipe tail. Plenty of room for double hose clamps.
 
Nov 6, 2006
9,997
Hunter 34 Mandeville Louisiana
A box knife and some good wire cutters .. The wire is really hard stuff.. I reckon a small angle grinder may work better on the wire than wire cutters.. but as John says the rubber would not be fun to do with a grinder.
 
Sep 24, 2018
3,043
Catalina 30 MKIII Chicago
A grinder definitely would stink! I'm just trying to avoid a 1/2" of wire hanging out and a terrible looking edge
 

Ward H

.
Nov 7, 2011
3,758
Catalina 30 Mk II Cedar Creek, Bayville NJ
I use a box cutter type knife to hack saw to cut the rubber, then I use a Dremel with a cutting blade to cut the wire just under the surface of the cut rubber.
 
Oct 13, 2020
157
catalina C-22 4980 channel islands CA
I found this video when I was replacing my sanitation hoses. The key is the pair of cutters that he uses, although Ward H’s method using a dremel tool is very similar. It worked great straight cuts and no sharp edges
Dano
 
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Likes: Indysailor
Jan 4, 2006
6,984
Hunter 310 West Vancouver, B.C.
Maybe I'm living in the Stone Age because the only tool I use is a hacksaw with 32 TPI (teeth per inch) blade. Produces a smooth cut with the wire nicely laying down into the rubber. Any lower TPI and it looks like a saber tooth tiger chewed the end off.

I think this may be the problem with others who have cursed the hack saw. Only a fresh blade with 32 TPI produces a flawless cut. Start cutting between two wires on top of the hose so that the single wire is near a solid surface on the bottom (doesn't wiggle) when it's being cut.
 
Sep 24, 2018
3,043
Catalina 30 MKIII Chicago
I found this video when I was replacing my sanitation hoses. The key is the pair of cutters that he uses, although Ward H’s method using a dremel tool is very similar. It worked great straight cuts and no sharp edges
Dano
What kind of cutters are those in the video?
 
Jun 21, 2004
2,658
Beneteau 343 Slidell, LA
I have used a hand held PVC pipe scissor type shear to make clean cuts thru sanitation hose up to 1 1/2" in diameter (cut wire with dikes or Dremel separating disc); however, I don't believe that the shear would cut thru exhaust hose.
 

NYSail

.
Jan 6, 2006
3,121
Beneteau 423 Mt. Sinai, NY
Sharp knife for the rubber, then a hefty pair of wire cutters leaving wire very close if not inside the rubber hose. Nice and clean.
 
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Likes: JoeWhite
Apr 10, 2010
100
Catalina 310 166 Dartmouth, Nova Scotia
Where possible I avoid using wire reinforced hoses due to the hidden rust and subsequent failure of the hose. I find nylon or silicone reinforced hoses and will pay extra for them to have the peace of mind and hose longevity.