How to make this cut?

[pmason0]

Just started to fit a cage in a miata and my first cut after fitting the main hoop I can't even make with the JD NotchMaster.

When placing the tube in the notcher the bend gets in the way, actually the tube needs to go a further to the right.
The only think I can think of is blocking out the notch in the tool to hold the tube out far enough.

Or I just notch it by hand.

Ideas?

 

[Technic_569]

Could you take a extra piece of straight tubing and tack it on the end of the one you need to cut, that way you can flip the tubing notcher around 180 degrees and clamp on to a straight section? I don't see any way of making that bend fit into the slot in the jig...

 

[rsanter]

Drill hole in the tube
Use hole saw by had to do most of it
Finish by hand

This is why I do not use those.
I do notching on my mill or by hand

Bob

 

[dr_clyde]

For custom tube notches, I prefer using a pedestal grinder with a wheel dressed to a radius. You can cut whatever angle you need with a cutoff wheel first then notch the cope on the grinder.

If you have a drill press that has a low enough spindle speed you can clamp the tube to the table with a sacrificial plate under it and cut it that way.

You can also use an angle grinder, or a carbide burr.

If you have a milling machine, a large roughing endmill of the appropriate diameter works best for notching tube, IMO. I use my Cincinnati Universal for notching tube all the time. Works awesome.

 

[bsg]

The only think I can think of is blocking out the notch in the tool to hold the tube out far enough.

That's your answer, hardest part is lining up the tube to the hole saw.
I would also add a regular C clamp for added rigidity.

Kevin

 

[pmason0]

Thanks for the ideas, don't have a mill, but might try the drill press idea, see what I can mock up. Going to check with a local welder to see if he doesn't have a mill or something.
Always the fallback is doing it by hand.

 

[kerrynzl]

I assume you are trying to get the hole saw closer into the bend?

Try putting the tubing into the notcher from the other side [ from the RHS with the bend going downwards ]

 

[pmason0]

Yes tried coming at it from the other direction but hard to see from the picture but the end at the right edge of the picture and not long enough unless I do what Technic_569 recommended and welding an extra peice of tubing.

Did come across this as an idea:

 

[zkdiesel]

Just notch by hand. The time you made making this post would have been the time to notch it by hand!

 

[kazlx]

Yea, just notch it by hand.

 

[Kevin54]

pmason.....do you have access to a mill? If you do, where the words JD SQUARED is engraved at the top of the fixture, mill the area out from the "R" of SQUARED down to the center of the radius in the fixture for the tube. This will let you get any tube in closer plus it will still let the tube lay square to the fixture in the vertical position.

 

[davetulk]

If it's a one of? Do by hand.

If you have a lot to do check out http://www.swagoffroad.com/JD2-Notch-Master-Reach-Around_p_49.html it may help you out.

 

[pmason0]

Yes looked at the Swag stuff, actually have their bandsaw base and finger brake.
Looks like do it by hand is going to be the way to go. Thanks everyone.