CNC plasma tables

mcutler said:
I'll start here for budget wise...
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Interesting that the reviews for this on the Harbor Freight website shows everybody loves it and its awesome. Checked Amazon and the same unit for sale is given horrible reviews with everybody saying its a piece of junk and don't buy it.
 
tknopp said:
Interesting that the reviews for this on the Harbor Freight website shows everybody loves it and its awesome. Checked Amazon and the same unit for sale is given horrible reviews with everybody saying its a piece of junk and don't buy it.
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Need to sort by most recent. I read a few to many bad reviews of it to make the $400 gamble.
 
Chris_Keziah said:
Yeah I'm planning something like that along with a small inline drier.
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Yep, should be cheap enough and effective... now I just need some wall space[emoji848]

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tknopp said:
I might do that too. Looks like a better long term investment. I would probably space mine off of the wall a couple of inches so there is 360 air flow around the pipes for maximum cooling.
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I've been planning a similar thing when I build a wall to put it on, but just for the compressor and not a plasma table..

I'd do the loops horizontally instead of vertically, and therefore get rid of all but one ball valve drop for loop drainage at the low point. Might be more cutting/soldering and more elbows depending on the layout and available vertical wall space, but elbows are cheap compared to threaded adapters, tees, and ball valves. My internal engineer says there may be marginally better cooling with horizontal loops, but probably not a measurable amount.
 
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Fabrik8 said:
I've been planning a similar thing when I build a wall to put it on, but just for the compressor and not a plasma table..

I'd do the loops horizontally instead of vertically, and therefore get rid of all but one ball valve drop for loop drainage at the low point. Might be more cutting/soldering and more elbows depending on the layout and available vertical wall space, but elbows are cheap compared to threaded adapters, tees, and ball valves. My internal engineer says there may be marginally better cooling with horizontal loops, but probably not a measurable amount.
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There's more to the vertical than just cooling... gravity.

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braxton357 said:
I have to think if you don't put auto drains in a setup like that , you'll be wasting your time.
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I respectfully disagree.

I open my tank valve (outdoors) every morning and immediately before I begin cutting, also have a seperator at the tank and the plasma cutter, which has yet to have any visible moisture in it. Approx. 50' of 1/2" black pipe between tank and cutter, across the ceiling, ( warmest space in the shop).

If taking 30 seconds to open 4-5 valves, 3' from the go switch for my table is too time consuming, then the time drain of fabrication in general should be the new definition of insanity.... especially in consideration of the huge compounding of time savings a CNC plasma has in a fabrication arena.
 
mcutler said:
There's more to the vertical than just cooling... gravity.

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A horizontal loop setup also drains to the lowest point, because gravity. ;).

Doesn't really matter either way (horizontal, vertical) because cooling differences will be negligible, I'm just offering a alternative layout with maybe some advantages, if they make sense to do differently.
 
Fabrik8 said:
A horizontal loop setup also drains to the lowest point, because gravity. ;).

Doesn't matter either way because cooling differences will be negligible, I'm just offering a alternative layout with maybe some advantages, if they make sense to do differently.
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Agreed, the gravity will work in horizontal, albeit much more inefficiently- the air will need to push that water droplet, essentially fighting the compound of gravity and surface tension while resting at the lowest point of that horizontal tube... essentially an uphill battle.

...the gravity in a vertical orientation would be much more effective.

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mcutler said:
...the gravity in a vertical orientation would be much more effective.
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Agreed.

I've also seen someone take two copper manifolds with reducer drops (don't know which size), and make a parallel flow heat exchanger. Not the cheapest way, but pretty cool to look at on a wall.
 
Mac5005 said:
I’ll have a Langmuir pro 48x32 in my shop in Jan/feb. price was right for entry level hobby use. Curious to see how it does. If I don’t like it, I’ll use it to cut the parts to build a 4x4 table.
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Have you received/set up the table yet? Very interested to hear your feedback if so. Have been reading on their own forum about some rolling changes and a few folks who have theirs in use already. Thanks
 
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