My first table build

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prairiecreekmfg
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My first table build

Post by prairiecreekmfg »

I just thought I would share my first build with you folks. Critiques are welcome, you probably cant hurt my feelings, I used to hold the flashlight for my dad. so....
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acourtjester
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Re: My first table build

Post by acourtjester »

Looks like a good start, I am not a fan of 2 motors for an axis, but there are lots of them out there.
A long lead screw can have a whipping action at higher speeds. Have you started on the electronics yet?
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prairiecreekmfg
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Re: My first table build

Post by prairiecreekmfg »

Yes, the panel is already built. I figured with a 5ft width the two motors would be better. I am aware of 'whip' but I think I will be able to control it with the way I will be attaching.
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Rodw
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Re: My first table build

Post by Rodw »

Ballscrews are not reccommended for plasma tables as velocity and accelleration are limited.

I'd recommend you look at a rotating nut system as ths eliminates the whip. They are not hard to build; Here is a random example.
Dingo74536
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Re: My first table build

Post by Dingo74536 »

Nice. I notice that you are using a MyPlasm system and noted that your wiring is nice and neat and that you have gone to a lot of trouble to keep it all nice and neat.
But what I don't see is any ground wires for your shielded cables when the manual recommends that they all be grounded in a particular way to eliminate some EMI which would be essential for an USB based board.
I am just installing one myself and that is what grabbed my attention, but maybe I am missing something :)
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acourtjester
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Re: My first table build

Post by acourtjester »

could he have grounded the shields on the other ends? You don't want them attached on both ends that causes a ground loop.
I used a similar panel connecter and passed the shields through on a pin in the connecter.
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Re: My first table build

Post by adbuch »

I'm with Tom on this one. Connect the ground shield drain wire at one end only to prevent "ground loops" which can act like large antennas for noise pickup.

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Dingo74536
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Re: My first table build

Post by Dingo74536 »

I get that , and I only commented on it because I saw no obvious common ground and their video tutorials are very specific on how and where to ground the system.
I am not eggspurt on Electrickery.
prairiecreekmfg
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Re: My first table build

Post by prairiecreekmfg »

Dingo74536 wrote: Sun Apr 30, 2023 8:40 am Nice. I notice that you are using a MyPlasm system and noted that your wiring is nice and neat and that you have gone to a lot of trouble to keep it all nice and neat.
But what I don't see is any ground wires for your shielded cables when the manual recommends that they all be grounded in a particular way to eliminate some EMI which would be essential for an USB based board.
I am just installing one myself and that is what grabbed my attention, but maybe I am missing something :)

Diagram.pdf
thank you for the kind words. Yes, you are correct, I do not have the grounds installed as of yet. I wired using what I had on hand at the moment, awaiting the arrival of the better shielded cables. These are shielded but foil shielded rather than braid shield. I have been test running this without the plasma installed to get everything sorted out first. I will re post when I have a completed unit.
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prairiecreekmfg
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Re: My first table build

Post by prairiecreekmfg »

Rodw wrote: Sat Apr 29, 2023 9:24 am Ballscrews are not reccommended for plasma tables as velocity and accelleration are limited.

I'd recommend you look at a rotating nut system as ths eliminates the whip. They are not hard to build; Here is a random example.
that is a very neat setup. those are some pretty beefy ball srews. If I do not like the performance out of what I currently have, putting a rack and pinion on would be very easy.
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Millermatic 252 with push/pull for aluminum
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SegoMan DeSigns
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Re: My first table build

Post by SegoMan DeSigns »

prairiecreekmfg wrote: Thu May 04, 2023 3:21 pm that is a very neat setup. those are some pretty beefy ball srews. If I do not like the performance out of what I currently have, putting a rack and pinion on would be very easy.
Both Tom and I use chain, sprockets and a drive line for synchronized movement, it allows you unlimited lengths (at a cheap price) on the runs.
prairiecreekmfg
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Re: My first table build

Post by prairiecreekmfg »

SegoMan DeSigns wrote: Thu May 04, 2023 3:57 pm
prairiecreekmfg wrote: Thu May 04, 2023 3:21 pm that is a very neat setup. those are some pretty beefy ball srews. If I do not like the performance out of what I currently have, putting a rack and pinion on would be very easy.
Both Tom and I use chain, sprockets and a drive line for synchronized movement, it allows you unlimited lengths (at a cheap price) on the runs.
got a pic to share?
Fadal 4020 with 527 control
Haas VF3
Bridgeport Series 2
Clausing Lathe
Millermatic 251
Millermatic 252 with push/pull for aluminum
Thermal Dynamics cutmaster 58
Everlast 82i
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SegoMan DeSigns
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Re: My first table build

Post by SegoMan DeSigns »

prairiecreekmfg wrote: Thu May 04, 2023 4:01 pm
SegoMan DeSigns wrote: Thu May 04, 2023 3:57 pm
prairiecreekmfg wrote: Thu May 04, 2023 3:21 pm that is a very neat setup. those are some pretty beefy ball srews. If I do not like the performance out of what I currently have, putting a rack and pinion on would be very easy.
Both Tom and I use chain, sprockets and a drive line for synchronized movement, it allows you unlimited lengths (at a cheap price) on the runs.
got a pic to share?




(6' x 12' cutting area)

Stills

1:28 - 1:37

shows chains and tensioner on the right side

Vids

2:05 - 2:46

Chain Drive in action

6:21 you can see the drive line that turns both side on the far left..
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acourtjester
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Re: My first table build

Post by acourtjester »

some of mine under construction. video if the 9 th table, on the Google drive.
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plasmanewbie
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Re: My first table build

Post by plasmanewbie »

Just checked out your video Tom. I like your new design concept, very clever!
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