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  #11  
Old 08-18-2017, 06:47 PM
o7oBaseMetal o7oBaseMetal is offline
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Originally Posted by KevinF View Post
This is one that I've been tossing around a while and I'm struggling a bit.

At work I need to butt connect and seal two pieces of ribbed PVC pipe. I think the diameter is 21". So we need two very good, flat, square, cuts. Luckily a machine shop already took care of one (picture 1). I need to achieve this on the second piece of pipe which is 4m long.

I am thinking of getting a router to make the cut and using a round piece of wood as a guide inside the pipe. Another issue I see is that the base of the router will obviously be flat and might rock as I am trying to spin it around the ID of the pipe. a curved jig could be build for the bottom of the router.

We could take the piece to a machine shop but I am inclined to try this myself..
I don't know what level of precision you need or how much effort you are willing to put in but the best way to get perfectly square cuts in pipe is to secure the pipe and have a cutting mechanism rotate around from a fixed center point on an axis square with the pipe. I suggest looking at the Georg Fischer Orbitalum saws to get the concept. You wouldn't need to build it exactly the same if you are only needing to face the ends square but the concept is still the same.
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  #12  
Old 05-22-2018, 10:45 PM
KevinF KevinF is offline
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Since I had the ribs to reference from, I built a flat plate for the base of the router and just practiced until I was able to get 360 degrees without screw ups. I used a router bit with a bearing on the end and let it ride on the outside of the rib. Then sanded off the little ridge where the router bit didn't cut. It worked out quite well. The pipe is now two piece jointed together, 6.5m tall and holding tailings for a research project. Also machined the ribs off one side for a magnet sensor.

Thanks for all the suggestions
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  #13  
Old 05-22-2018, 10:58 PM
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Man, Kevin, that stuff's like sand in a harem, gets into everything.

I bet you were digging shreds of it out of your ears and hair for a day or so.
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  #14  
Old 05-23-2018, 12:38 PM
KevinF KevinF is offline
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Weeks. Its got static charge to it. Pockets full. Tracked it all over the place at work.
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  #15  
Old 05-23-2018, 02:09 PM
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toprecycler toprecycler is online now
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Quote:
Originally Posted by KevinF View Post
Weeks. Its got static charge to it. Pockets full. Tracked it all over the place at work.


Reminds me when I was routing the corners of alum tube for a hand rail.


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  #16  
Old 05-23-2018, 03:03 PM
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Quote:
Originally Posted by KevinF View Post
Weeks. Its got static charge to it. Pockets full. Tracked it all over the place at work.
Haha
Classic!
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  #17  
Old 05-23-2018, 11:45 PM
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I used the same stuff in 24" size to re-crib my well, and build a sump well for the house in '09. We drilled seep holes in the bottom section used in the well, and we had blue curls all over the yard and shop and dogs for what seemed like years. I still find the odd curl in the grass!

Nice solution for your cut Kevin. Looks good.
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  #18  
Old 05-23-2018, 11:55 PM
Samcord Samcord is offline
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Reminds me of the last time I trimmed my beard. Just after an overhead spray foam session. Click image for larger version

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  #19  
Old 05-25-2018, 02:22 PM
KevinF KevinF is offline
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Thats a good one Sam. Hilarious.
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