Cutting a chimney liner

[NoSubstituteForFire]

I purchased a new woodstove (a woodstock progress hybrid) which has a different hole location than our last one. In fact, I am installing an elbow out of the top of the new woodstock which puts the thimble location 42" higher than the other one.

Here's my question: what is the best way to raise and cut the chimney liner to accommodate the new hole location? I can access the top of the chimney and raise it from the top, but I need some way to support it so that I can have my hands free to cut it. I obviously don't want to cut it and have the liner fall to the bottom of the chimney. I also don't want to fall off of the roof...

Any ideas?

 

[Easy Livin’ 3000]

When I did it, my top plate had a hose clamp on it. So, I just pulled the liner up through the top plate, turned the screw on the clamp, and cut it with my $15 angle grinder with cut-off wheel.

Don't let anyone tell you that tin snips are the tool to cut it. Makes a mess, pain in the ass.

Angle grinder with cut-off wheel. Like butter.

Plus, if you don't already have an angle grinder, you will find it indespensable once you have one. There's a good, paddle switch one on sale at harbor freight this month.

 

[fire_man]

I second the angle grinder method. Its one of my most often used tools and in some cases seems like nothing else would work.

 

[Prof]

I used tin snips several years ago when I did my liner--others are right it was a PITA. I didn't have an angle grinder then, but it definitely would have been a better tool for the job.

 

[NoSubstituteForFire]

When I did it, my top plate had a hose clamp on it. So, I just pulled the liner up through the top plate, turned the screw on the clamp, and cut it with my $15 angle grinder with cut-off wheel.

Don't let anyone tell you that tin snips are the tool to cut it. Makes a mess, pain in the ass.

Angle grinder with cut-off wheel. Like butter.

Plus, if you don't already have an angle grinder, you will find it indespensable once you have one. There's a good, paddle switch one on sale at harbor freight this month.

Thank you! I have an angle grinder. I guess I will just have to see if someone can hold the liner down below because it's going to take two hands for me to pull it up and hold it. I won't have a way to reposition the clamp on the top.

 

[Easy Livin’ 3000]

Thank you! I have an angle grinder. I guess I will just have to see if someone can hold the liner down below because it's going to take two hands for me to pull it up and hold it. I won't have a way to reposition the clamp on the top.

I think I might have had someone down below pushing to hold it in place while I clamped.

Do you have a top plate.