mitre cuts on tubing

[BrokenBiker]

for a bit of mig practice when it turns up, i have the exhaust from the megane sat in the garden.

i want to chop some mitres into it and just make different shaped scrap beofre it goes to the weigh bridge.

my question it, if i wanted to make a heaxagon what is the easiest way to make sure the tube doesnt rotate when i move it over to cut the next mitre? i.e. how do i ensure the top of the tube for the first cut is also the top of the tube for the second cut?

obviosuly if this isnt doen correctly then the last 2 ends wont meet properly

i see a hexagon as a good way of practicing as on shape gives 6 joints and it has to be either re-positioned for the back of the joint of suspended and then i have to move around it etc...

 

[rory1]

Clamp or tack a piece of angle/flat on the opposite end to the cut and put your level on it.

 

[BrokenBiker]

Clamp or tack a piece of angle/flat on the opposite end to the cut and put your level on it.

not a bad idea, hadnt thought of that.

 

[rory1]

There are pipe fitters tools available that help with this, Google curve-o-mark centering tool. Uses the same principle as above but you use a centre pop as a reference instead of tacking a flat onto the pipe

 

[Parm]

There are pipe fitters tools available that help with this, Google curve-o-mark centering tool. Uses the same principle as above but you use a centre pop as a reference instead of tacking a flat onto the pipe

Thanks. another tool that I haven't got, probabaly wont need but just have to have it

 

[BrokenBiker]

Thanks. another tool that I haven't got, probabaly wont need but just have to have it

im just gonna stick with the bit of bar tacked on and a square to keep it level lol

 

[BrokenBiker]

i have however just realised that once ive made the first cut, i can simply use a square against the cut edge of the pipe to make sure it is actually square to the base before clamping and cutting again...

 

[Parm]

i have however just realised that once ive made the first cut, i can simply use a square against the cut edge of the pipe to make sure it is actually square to the base before clamping and cutting again...

Bingo !!

 

[BrokenBiker]

Bingo !!

its always the simple things that get missed...just tried it out and it works...dont even need a square, i just cut some scrap with the mitre saw set square and used that

 

[colnerov]

If you look at the exhaust you may see the weld line down its length. Or you can scribe a line on it.

 

[Maker]

In one of Adam Booth's videos (One of the rotary welding table ones I think) he had two little 'feet' that attached to a steel rule to make it sit straight along a shaft/tube. I have no idea what they're called but they would be useful for this.