Cutting EMT

   / Cutting EMT #21  
i've cut it with a roller style copper pipe cutter. worked nice. was slow as watching ice melt in a refer though..

I only use a tube cutter when i need to cut into the emt and perserve the wire and cable inside. otherwise hack away. have used those fancy battery saws from milwaukee and mikita on the job. pretty neat.
 
   / Cutting EMT
  • Thread Starter
#22  
Don't forget that the length of the tubes isn't critical, but the distance between bolt holes is.
Use a jig that locates off of the first hole to position for the second hole.

Indeed. Here's a photo of the jig I built the last (first) time I made a dome.

IMGP5543.jpg


That's the end that the already-drilled hole goes on. The other end, of course, is under the drill bit.

IMGP5545.jpg


The first time I did this, I was building the dome for myself. Recently, someone asked me, "Where'd you buy that dome?" Upon hearing the answer, he asked what I'd charge to build him one. He has yet to actually come up with the money, but he's indicated that he's game.

Y'all may also enjoy reading about the hoist I constructed from hardware-store materials to make building the dome easier. Domes can be built "top-down" or "bottom-up". Top-down, you hang the dome from a crane or hoist and everybody works on the ground. Each time a level is completed, the dome is raised and construction of the next level is begun. Bottom-up, you start on the ground, and pretty quickly you're moving ladders around to finish the job. Even if you have a man-lift, top-down is faster, because you can have as many people working as you have tools. With bottom-up, you need a ladder or a man-lift for every worker, and there is still the additional hassle of having to lift up the struts, drop tools on people's head, fall off ladders, and so forth.

Here's a photo of the hoist itself, ready for construction of the dome:

IMG_7550.jpg


And here's a photo of the completed dome with the hoist:

IMG_7569.jpg


If you're interested, this blog post describes the logic behind why I think all of this is safe. Lots of load-limit calculations that may interest the engineering geeks aong us. This blog post details the hardware-store materials that I used to construct the hoist.
 
   / Cutting EMT #23  
I like that jig. And thats a good job flatening the EMT end. I bet you find the second dome will go much quicker and faster.
 
   / Cutting EMT #24  
Sorry for dumb questions and I may be the only person on earth that don't know but what is the dome used for? Covered and used for green house? I don't see a door to enter? If you have time please inform me. Thanks (and don't laugh)
 
   / Cutting EMT #25  
Sorry for dumb questions and I may be the only person on earth that don't know but what is the dome used for? Covered and used for green house? I don't see a door to enter? If you have time please inform me. Thanks (and don't laugh)


Man you have a lot of nerve asking what the dome is for:)..... (I was kind of wondering too:ashamed:)

James K0UA
 
   / Cutting EMT #26  
I searched the internet for a while before finally asking. I figured if nothing else I'd get a good laugh out of it anyway (at my expense)
 
   / Cutting EMT #27  
ufo landing pad?

psychic radar reciever?
 
   / Cutting EMT #28  
ufo landing pad?

psychic radar reciever?




I should have known I'd get an answer like this. I thought that might be what it was but didn't want to give away. :)
"Classified Info"
 
   / Cutting EMT #29  
uh-oh.. did i leak it? :)
 
   / Cutting EMT #30  
Steave said:
I searched the internet for a while before finally asking. I figured if nothing else I'd get a good laugh out of it anyway (at my expense)

Count me in as well. Also what is the covering. Any finished pics?

David Sent from my iPad using TractorByNet
 

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