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Old 02-24-2017, 03:32 AM
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Default Plasma tubing notcher

Just in case some watchers don't subscribe to "Instructables", here is an interesting video...

http://www.instructables.com/id/Make...m_medium=email

This was such a great project, I didn't want it to end.
---------------------------------------------------------
And another series of projects can be found, here.

Last edited by Gadgeteer; 02-24-2017 at 03:49 AM.
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Old 02-24-2017, 08:43 AM
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Really clever idea, and does not take rocket science to operate. Beats a pipe wrap template all to heck.
I see some of the sneering class were commenting on the cable twist. Cost of doing business, I'd say.
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Old 02-24-2017, 08:54 AM
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Ya gotta make a cam for every kind/size of cut ?
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Old 02-24-2017, 01:34 PM
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That is a neat idea for sure but personally I think you'd have to do a lot of notching to justify the cost and time required to build it.

We have one marine customer who we build a lot of nav arches and related pipe frames for--there's always a lot of notching involved. Over the years we tried a few different methods but we eventually settled on one of the Eastwood style notchers. With sharp hole saws they work really well and they're also very versatile--really easy to set up. At around 80-90 bucks a pop they're really good value in my view....
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Old 02-24-2017, 07:51 PM
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Quote:
Originally Posted by LKeithR View Post
That is a neat idea for sure but personally I think you'd have to do a lot of notching to justify the cost and time required to build it.

We have one marine customer who we build a lot of nav arches and related pipe frames for--there's always a lot of notching involved. Over the years we tried a few different methods but we eventually settled on one of the Eastwood style notchers. With sharp hole saws they work really well and they're also very versatile--really easy to set up. At around 80-90 bucks a pop they're really good value in my view....
I'm thinking these farmers that make well tubing into gates and portable panels, they do a pile of notching.
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Old 02-25-2017, 06:58 PM
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Nice, but he forgot to reverse the rotation on each consecutive cut. Did you see how twised the plasma cable was by the end after so many rotations in one single direction? I'm surprised he was still able to get air through it. An adjustable cam would be nice to make saddle cuts for non-perpendicular joints.
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Old 02-25-2017, 09:43 PM
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This looks allot like something I have seen in my old (1947) airco oxygen cutting book,
a cam for every cut.


If I was going to put that much time in making it....I surely would bring it up to date.

Looking at the portable little ardunio stuff, I would make it with 2 stepper
motors (one for rotate, and a screw drive for the slide)

You should be able to design an interface screen or whatnot, where you
key in the 2 pipe sizes, the intersecting angle, etc.

Last edited by digger doug; 02-28-2017 at 09:08 PM.
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Old 03-19-2017, 07:27 PM
o7oBaseMetal o7oBaseMetal is offline
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Quote:
Originally Posted by Gadgeteer View Post
Just in case some watchers don't subscribe to "Instructables", here is an interesting video...

http://www.instructables.com/id/Make...m_medium=email

This was such a great project, I didn't want it to end.
---------------------------------------------------------
And another series of projects can be found, here.
These Make it Extreme guys have quite a few good build videos on YouTube of home made tooling.
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Old 03-19-2017, 08:27 PM
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Quote:
Originally Posted by Oscar View Post
Nice, but he forgot to reverse the rotation on each consecutive cut. Did you see how twised the plasma cable was by the end after so many rotations in one single direction? I'm surprised he was still able to get air through it. An adjustable cam would be nice to make saddle cuts for non-perpendicular joints.
With a couple of micro switches well placed, keeping the cable twist out of it would be a simple problem to solve.
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Old 04-03-2017, 01:50 PM
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This is more like it:
https://youtu.be/3TeeW49Wiq8
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