Search found 654 matches

by tcaudle
Tue Jul 25, 2017 6:49 pm
Forum: CNC Plasma Cutters General Forum
Topic: thermal dynamics 100xl
Replies: 3
Views: 46

Re: thermal dynamics 100xl

It all depends on what you are using for controls and how well you can get things grounded . HF start is noisy but a 100 Amp machine cutting at high current generates a lot of EMI too. All you can do is hook it up and start the hunt for the "Noise Ghosts".
by tcaudle
Wed Jul 19, 2017 6:46 pm
Forum: CNC Plasma Cutters General Forum
Topic: Grill on barbeque
Replies: 11
Views: 335

Re: Grill on barbeque

Or a Yoshi Mat ...but WAIT, Order now and you get two plus a useless plastic flipper (just add more shipping and handling) for only 19.95
Sorry, I really Must quit watching late night commercials! :geek:
by tcaudle
Wed Jul 19, 2017 5:17 pm
Forum: Plasma Cut Quality Forum
Topic: Finecut Woes
Replies: 17
Views: 451

Re: Finecut Woes

One last thing (just in case) You need excellent conduction so all of the heat goes into the actual cut. A weak or poor workclamp connection can cause bad cuts. Always clip direclty to the material The table gets worse over time as a conductor as slag builds up on the slats. If you do clip to the ma...
by tcaudle
Sun Jul 16, 2017 3:33 pm
Forum: DIY Plasma Table & Accessory Discussion Forum
Topic: Floating Z? Ohmic sensor?
Replies: 2
Views: 119

Re: Floating Z? Ohmic sensor?

Close. The floating head acts like a shock absorber and suspension similar to a car. It allows the end of the torch to contact the material and then for the Z ti continue down unto it trips a sensor (usually a mechanical switch). Its a process called IHS (Initial height sensing ) and it has one purp...
by tcaudle
Sun Jul 16, 2017 3:10 pm
Forum: SheetCam
Topic: Sheetcam double cut in different directions - help?
Replies: 5
Views: 140

Re: Sheetcam double cut in different directions - help?

It sometimes happens when you go from a bitmap to a vector drawing (auto trace). Depending on the type of trace you select the software may se a line with thickness and trace on the outside of each side of the line. Look at the drawing in the normal mode (not outline and see if it has a width. I am ...
by tcaudle
Wed Jul 12, 2017 5:16 pm
Forum: Corel Draw Graphics Suite
Topic: Can CorelDraw output DXF format for autocad 2004???
Replies: 3
Views: 230

Re: Can CorelDraw output DXF format for autocad 2004???

The DXF export from Coreldraw is not the greatest. It does not do arcs or circles and exports as line segments. It's too bad your machine only takes DXF. If it would take conventional G-Code you would have a lot more options. So does it have a built in CAM program that lets you define the cuts, feed...
by tcaudle
Tue Jul 11, 2017 4:01 pm
Forum: CommandCNC - Linux
Topic: DTHC Off code doesn't seem to work
Replies: 2
Views: 87

Re: DTHC Off code doesn't seem to work

First of all and S10 code won't do squat in CommandCNC. Its an M67 or M68 with the parameters . If you get the correct toolsets the codes for the DTHC on/off are there. Its also covered in the Addendum of the DTHCIV manual for CommandCNC.
by tcaudle
Mon Jul 10, 2017 1:54 pm
Forum: DIY Plasma Table & Accessory Discussion Forum
Topic: Rod's Spaceship Scratch Built Plasma Table
Replies: 45
Views: 1860

Re: Rod's Spaceship Scratch Built Plasma Table

Better run those numbers again . 10ma across 100,000 ohms drops ALL of the voltage. I'll bet he does not have the 100K resistance in series with the plate. The model resistance of the SSR is 12//01 or 1200 ohms. A 100K in series with 1200 drops 98.8% of the voltage across the 10oK and 1.2 arcoss the...
by tcaudle
Mon Jul 10, 2017 11:36 am
Forum: Plasma Cut Quality Forum
Topic: Torch height is off.. how to fix it?
Replies: 4
Views: 179

Re: Torch height is off.. how to fix it?

The THC has no idea where the Z DRO is nor does it care. It simply moves to make the arc volts correct. Assuming the THC is working it moves the Z to whatever height it takes to maintain the Arc Volts during the cut. In the conventional parallel port setup MACH takes the UP and DOWN is as a Z jog an...
by tcaudle
Sun Jul 09, 2017 7:08 pm
Forum: DIY Plasma Table & Accessory Discussion Forum
Topic: Rod's Spaceship Scratch Built Plasma Table
Replies: 45
Views: 1860

Re: Rod's Spaceship Scratch Built Plasma Table

The Math is pretty easy. The current is the same in a series circuit . The voltage drop is proportional to the ratio of the Resistances So at 637 ohms if you were to put another 637 ohm resistor in series, the voltage would split 50/50 between them at 12 V each. As you can see you cannot have much i...
by tcaudle
Sun Jul 09, 2017 2:07 pm
Forum: General Discussion
Topic: Help with possible settings mach3 and sheetcam. Pause at change of feed rate
Replies: 10
Views: 166

Re: Help with possible settings mach3 and sheetcam. Pause at change of feed rate

No need to experiment. the parsing engine in MACH will stop and execute the command and wait until its finished. The only M commands in MACH that do not cause a motion pause are M10 and M11. They are designed for laser control and will only control an Output. You can write a macro that is tied to an...
by tcaudle
Sun Jul 09, 2017 1:55 pm
Forum: Plate Markers/Air Scribes
Topic: Air scribe v s electric spindle motor
Replies: 6
Views: 279

Re: Air scribe v s electric spindle motor

engraving is a whole different process than marking with an electric or pneumatic scriber tool. To do engraving right you need a rotary engraving bit (V shaped) . This presents a problem. The deeper you let it cut the wider the line and the more torque it takes to keep it from bogging down. To do it...
by tcaudle
Sun Jul 09, 2017 1:31 pm
Forum: DIY Plasma Table & Accessory Discussion Forum
Topic: Rod's Spaceship Scratch Built Plasma Table
Replies: 45
Views: 1860

Re: Rod's Spaceship Scratch Built Plasma Table

I am confused: So the external shield you tapped into is connected to the torch nozzle? have you used an ohmeter and touched the plate and gotten a complete circuit ? The 24V supply has to be completely isolated (cannot share its common -24 in your sketch) or you risk lighting up your control electr...
by tcaudle
Sat Jul 08, 2017 8:34 pm
Forum: General Discussion
Topic: Help with possible settings mach3 and sheetcam. Pause at change of feed rate
Replies: 10
Views: 166

Re: Help with possible settings mach3 and sheetcam. Pause at change of feed rate

It depends on HOW you are turning off the THC. Doing it with a macro (custom Mcode) will cause motion to stop until the macro executes. If its in the Gcode as an M code it executes code one line at time and does not swtich to the next line until the engine senses the line has completely executed. Th...
by tcaudle
Sat Jul 08, 2017 8:23 pm
Forum: Hypertherm Plasma Cutters
Topic: 45xp fault code hyT:0-30-0
Replies: 1
Views: 110

Re: 45xp fault code hyT:0-30-0

Scroll down to the post just before yours titled:

Hypertherm powermax 65 will not fire 0-30 trouble code


Jim Colt from Hypertherm gives a detailed answer
by tcaudle
Sat Jul 08, 2017 2:48 pm
Forum: General Discussion
Topic: Help with possible settings mach3 and sheetcam. Pause at change of feed rate
Replies: 10
Views: 166

Re: Help with possible settings mach3 and sheetcam. Pause at change of feed rate

No machine can instantly switch speeds. Its up to the acceleration curve of your setup. It DOES have to decelerate and accelerate when switching speeds. You may find that if you want to use rules you need to retune the motors to more gently make the transition. Of course that makes it so you HAVE to...
by tcaudle
Sat Jul 08, 2017 2:31 pm
Forum: DIY Plasma Table & Accessory Discussion Forum
Topic: New diy table
Replies: 5
Views: 214

Re: New diy table

Actually you are better off with course leadscrews. The reason they use them on a CNC punch press is you are moving around a rather light sheet of material and at high speeds....kinda like the speeds you need for thin material on a plasma. Study a little about "lead whip" and look at the m...
by tcaudle
Thu Jul 06, 2017 11:17 am
Forum: DIY Plasma Table & Accessory Discussion Forum
Topic: New diy table
Replies: 5
Views: 214

Re: New diy table

Those motors are servos with encoders(?) on the back. Hopefully you have the matching drivers . I can't read the encoder label but they could be digital encoders, resolvers, or tachs. Its not possible to see if they are DC brushed or BLDC or some other type. It appears they MAY have gear reduction o...
by tcaudle
Tue Jul 04, 2017 1:36 pm
Forum: CNC Plasma Cutters General Forum
Topic: robotic arm
Replies: 6
Views: 376

Re: robotic arm

I missed a larger 6 axis robotic arm WITH controller at a local auction. it went for 130.00 and weighed 1500 lbs . Some guy with a LOT of time and knowledge in robotics might be able to back engineer the hardware and build a controller and use something like LINUXCNC to control the motion. It also l...
by tcaudle
Tue Jul 04, 2017 1:15 pm
Forum: General Discussion
Topic: CommandCNC: Looking for floating Z switch offset setting
Replies: 9
Views: 195

Re: CommandCNC: Looking for floating Z switch offset setting

It should not matter where the material ls or if its warped or different thickness. You are measuring the switch offset. Its the distance between when the torch hits the top of material and actually triggers the switch. It is exclusive of where the top of material is and it should ALWAYS be the same...
by tcaudle
Mon Jul 03, 2017 3:27 pm
Forum: DIY Plasma Table & Accessory Discussion Forum
Topic: where to find
Replies: 5
Views: 147

Re: where to find

its a 48V 7A switching power supply with a primary side selection swtich for 120 or 230 VAC You could sub in a 48V larger (than 7A) current and or one with a universal input like 95-240 VAC. They are all over Ebay out of China.
by tcaudle
Mon Jul 03, 2017 12:02 pm
Forum: CNC Plasma Cutters General Forum
Topic: Another newb another THC question.
Replies: 13
Views: 1425

Re: Another newb another THC question.

splicing the voltage divider between j22 and the work cable and that seemed to do nothing Now that modification is a new one to me. The voltage divider connections have nothing to do with firing the torch . The hand torch lacks the internal jumper to allow the torch to be fired from the CPC. YOu ha...
by tcaudle
Mon Jul 03, 2017 11:56 am
Forum: SheetCam
Topic: sheetcam problem
Replies: 3
Views: 139

Re: sheetcam problem

A license is not required to do the first 150 lines of code unless its a pirated version. So you should get SOME code If you have operations defined with a tool and feed rates and have the contours on the layer associated with the operation. You should see the blue wider toolpaths as you define the ...
by tcaudle
Mon Jul 03, 2017 11:48 am
Forum: CommandCNC - Linux
Topic: Linux/CommandCNC - Z Loosing position during cutting
Replies: 2
Views: 134

Re: Linux/CommandCNC - Z Loosing position during cutting

The support forum is not on holiday. Most of you assumptions are not correct. First a touch off (which is a PROBE function does NOT zero the Z it simply sets the offset in negative numbers so it knows how far to lift to do the rapid clearance. The dive at the end has to be from the torch slowing dow...
by tcaudle
Fri Jun 30, 2017 6:00 pm
Forum: CommandCNC - Linux
Topic: I have a few questions on general CNC plasma operations
Replies: 4
Views: 411

Re: I have a few questions on general CNC plasma operations

You might try asking over in the PlasmaCAM forum on this site under the Plasma Machines section.

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