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Nooby needs some hep

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leggman
Posts: 56
Joined: Sun Mar 20, 2016 3:52 pm

Nooby needs some hep

Postby leggman » Sun May 28, 2017 12:09 am

About a year ago I built a 4 x 4 plasma table and almost got it running but It had some issues so it sat collecting dust while I pursued other intertests .
Today I dusted it off and tried to get it running but it still has some issues.
What I have is a homemade table, mach 3 software, Chinese cut 60 plasma cutter.
What happens when I try to run the roadrunner program is sometimes the torch ignites and sometimes it doesn't. I double checked the ground and its good.
The mouse will die as soon as I start the program so I have to unplug it and plug it back in. If I let the program run until I run out of lines then I have to completely shut off the computer and reboot the software.
I know I need a thc and probably a hyperthetrm but I am trying to get by with what I have for now.
I have put magnetic shields on all the wires except the mouse and I will do that tomorrow. If anyone has any ideas then please chime I. And Thanks.

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WyoGreen
Elite Contributing Member
Elite Contributing Member
Posts: 601
Joined: Tue Mar 04, 2014 8:36 pm
Location: Cheyenne, Wyoming

Re: Nooby needs some hep

Postby WyoGreen » Sun May 28, 2017 12:02 pm

I think your problem is your torch. I found this with a little searching:

"Update: I just looked the system up. It is a high frequency start torch. The consumables look identical to Hypertherms original hand torch...the Max40, that was introduced in 1986!. I think if I was going to copy someones technology I may look at a newer design! That torch cut well to about 1/4"...but has very short consumable life by todays standards. It is high frequency start....so be careful when using it around sensitive electronics...as it can produce electrical noise...similar to a TIG with AC for starting."

Sounds like you are getting noise into your computer.

Steve
Precision Plasma gantry
CommandCNC Linux controller w/Feather Touch & PN200 hand controller
HT-45 plasma cutter
Plate Marker
CNC Router table

tcaudle
Posts: 812
Joined: Tue Feb 28, 2012 6:47 pm

Re: Nooby needs some hep

Postby tcaudle » Sun May 28, 2017 2:03 pm

ahhh...the Roadrunner is a router file not plasma and just generic g-code. You cannot use it for testing Plasma. You need so CAM software and a POST for a MACH plasma that should fire the torch correctly. IF you do not have any method of touch off (i.e. a Z with a floating torch holder ) then you cannot use any of the MACH posts for THC .

It true that HF start plasmas are a challenge you first need to get a true plasma cutting file that fires the torch at the right time and proceed from there

leggman
Posts: 56
Joined: Sun Mar 20, 2016 3:52 pm

Re: Nooby needs some hep

Postby leggman » Sun May 28, 2017 7:44 pm

I could not agree more but being new to this I am struggling to understand exactly what I need. Thanks

leggman
Posts: 56
Joined: Sun Mar 20, 2016 3:52 pm

Re: Nooby needs some hep

Postby leggman » Fri Nov 17, 2017 5:37 pm

A couple of months ago I purchased the Hypertherm XP45 cutter for my homemade table and I have yet to hook it up.
I was trying to run it with a chinese high frequency machine but that just didn't work.
The table moves like it should and homes just fine but I am scared to death of hooking something up wrong and doing some damage to a very pricey machine.
I know I will need a torch height controller but I don't know where to start to look.
My XP 45 cutter is mounted only about five feet from my electronics so I don't need a long cable to connect the two.
Please reply with ideas and suggestions. Thanks
Dave


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