i want to have a go at making lobster bends in exhaust pipe, not for any practical use but purely because it looks interesting! But I need a method of cutting angled cuts in the exhaust pipe.

I've been looking at things like a hand mitre saw from the likes of Toolstation etc, but apart from them not accommodating 3 inch pipe they don't get good reviews. I also don't want a powered saw because it's a bit much of an outlay for an 'experiment'.

I tried to set up a jig with spare metal, but while I managed to get one cut done the jig ended up losing it's face so I doubt it'll keep the blade in line for more than one or two more cuts.

Can anyone suggest how I can do it?

If you want a more permanent jig, you may want to sleeve four bolts with stainless steel tubing so the hacksaw "rides" the rollers without cutting.
With a little wits, you may be able to make it adjustable in case you want to do different angles.
Like this, but the Pins roll...
https://www.google.com.mx/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0ahUKEwi5-q_mqbvWAhVE7IMKHSxpA _oQjRwIBw&url=http%3A%2F%2Fwww.waynegoldmanengineering.com%2FModel-534-Mitre.html&psig=AFQjCNFBZdaQumgqHYIPm0CrB_GAks02Fg&ust=150625674319 9319

That's brilliant, thanks!

I used the web site linked to print out templates.

https://www.blocklayer.com/pipe-miter.aspx

Wraped the template round the tube, marked with a permanent marker, and cut it with a hacksaw.
(Stainless is pretty hard on the hacksaw blade)

Worked pretty well on my exhaust. There are also templates for t joints etc which i used for my roll hoop.


Paul

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Originally posted by paulc
I used the web site linked to print out templates.

https://www.blocklayer.com/pipe-miter.aspx
... Worked pretty well on my exhaust. There are also templates for t joints etc which i used for my roll hoop.


Paul

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I needed a small bend to get everything to line up.

You can see it between the end of the manifold and the v-band joint.
It needed to be quite short as I bought fairly long silencers and was quite tight for space.



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Paul C

+1 for the paper templates thing! I made a 4" bend for my air intake from the side of a washing machine by cutting out the segments drawn using a paper template and then bending it into hoops before welding together and my chimney for my Pug V6 was hewn from stainless tube using paper templates. Thus:

Chimney lobster

Chimney lobster flappy disc

Chimney lobster shiny

Well, it works...




I just need to find a bit more time to weld it up. It took me a couple of hours to make the jig, and a couple of minutes to cut the sections. They're not particular aggressive bends for now, I just wanted to see if the process made sense to me.

quote:

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Originally posted by Slimy38
Well, it works...

... It took me a couple of hours to make the jig,...

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