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timgunn1962
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For 36m (72m if cutting with a slitting disc) I'd be inclined to try a wall chaser fitted with a pair of Lenox MetalMax diamond blades for metal (or the equivalent from another manufacturer). They are slower-cutting than normal thin slitting disks, but you don't need to deal with them wearing down significantly. Normal thin discs might work ok, but I'd expect the diamond ones to work better over several hours. I'd expect it to need some sort of guide arrangement lashing up to keep centred on the box-section and cutting straight.
It seems like the sort of job you'd want to fob off on a ginger scouse apprentice.
I don't know how long it'll actually take but at a wild guess of progress at 1mm per second, 36m of cut would be 10 hours of a job.
I'd also at least half-expect to need to follow behind and weld on the brackets to keep the gap from spreading and I'd be hoping there's no serious twist or warp to contend with.
It seems like the sort of job you'd want to fob off on a ginger scouse apprentice.
I don't know how long it'll actually take but at a wild guess of progress at 1mm per second, 36m of cut would be 10 hours of a job.
I'd also at least half-expect to need to follow behind and weld on the brackets to keep the gap from spreading and I'd be hoping there's no serious twist or warp to contend with.
Your brackets will go a long way to keeping it vaguely square - but the bits inbetween . . .I would imagine it will become very twisty and floppy around it's axis at the very least, making it hard to keep a 12mm gap.
I've no idea how you would do it - my first thought as a design engineer would be to find a standard item from an overhead conveyor, overhead door gear people. I think you are going to be heading into a whole load of the customer saying "but the drawing says . . ." trying to cut it from existing box section. I hope I'm wrong.
I've no idea how you would do it - my first thought as a design engineer would be to find a standard item from an overhead conveyor, overhead door gear people. I think you are going to be heading into a whole load of the customer saying "but the drawing says . . ." trying to cut it from existing box section. I hope I'm wrong.
Arc Tourist
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Rather than cutting to full depth in one pass, several shallow passes quickly moving along would minimalize heat transfer.
northwest
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Well the job has moved on a bit from the first post, first up is the actual conveyor "chain" for want of a better word:
I wouldn't like to think I was buying much of that. The curves and transitions we are fabricating:
The Ant-Personnel mines are still lying in wait though:
We will tackle them later
I wouldn't like to think I was buying much of that. The curves and transitions we are fabricating:
The Ant-Personnel mines are still lying in wait though:
We will tackle them later
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Looks like overhead conveyor systems I've seen variations of in many factories, I'm surprised there isn't an "off the shelf" solution.
northwest
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Well Plasma cutter it is then:
Done a couple lengths now and it hasn't moved at all. We are going to experiment with Robin's suggestion of filling them with water, pics to follow........
It's my R-tech 50amp set.
Done a couple lengths now and it hasn't moved at all. We are going to experiment with Robin's suggestion of filling them with water, pics to follow........
It's my R-tech 50amp set.
northwest
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LMAO, as many people on here will tell you, these jobs are usually: "can you do this?" - Yes! "well here you go then, call us when they are ready!"
Erie Fred
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Is the bump in the road deliberate or did you sneeze ?
Hood
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I am surprised it hasn't moved, I was expecting it to spring open quite a bit.
Regarding the water, as I said I would partially plug one end but leave a hole for water to escape and have a hose running into it to keep the internals filled, that way you should get a nice golden cut rather than a black oxidised one.
northwest
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It was deliberate as it happens, the "guide fence" we used had a bit missing.
northwest
Searching for the Holy Grail.........
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We are very, very pleasantly surprised and personally I am pleased my plasma is being used. I bought it because well, I should have one and in two years it has been sat on the shelf unused. As it wasn't cheap I was a bit disappointed and thought "well, that's a total waste". Turns out it wasn't and couldn't have done the job without it.
We didn't fill them with water in the end as per @Hood 's suggestion as we had nowhere for the water to go except on the floor and Gareth didn't fancy the subsequent mess. After the flood of New Year I can't say I blame him.
We didn't fill them with water in the end as per @Hood 's suggestion as we had nowhere for the water to go except on the floor and Gareth didn't fancy the subsequent mess. After the flood of New Year I can't say I blame him.
