Search found 590 matches

by tcaudle
Sat May 27, 2017 12:41 pm
Forum: General Discussion
Topic: Grouping.
Replies: 2
Views: 53

Re: Grouping.

DXF does not support grouping or layers in the older formats and most exports and imports do not support polylines (objects) . Depending on the import software it should try to make polylines out of all the segments by doing node matching (auto joining) If that is th eonly way you can get shapoes in...
by tcaudle
Fri May 26, 2017 5:31 pm
Forum: CNC Plasma Cutters General Forum
Topic: CandCNC Feather touch setup help required
Replies: 25
Views: 583

Re: CandCNC Feather touch setup help required

G28.1 has a "from" value meaning the statement G28.1 Z .5 means to go at normal feedrates until you hit .5 above where the last zero was set then proceed at the Homing Speed for that axis (as set in the menu Homing & Limits). It moves until the assigned input goes active Or forever if ...
by tcaudle
Fri May 26, 2017 2:25 pm
Forum: File Conversion Help Wanted
Topic: dxf fonts
Replies: 2
Views: 62

Re: dxf fonts

An entire "font"? There is no such thing as DXF font files. Each letter would have to be a separate DXF file. You could not bring them in to a drawing and type in the letters or have it place a line of text with proper letter to letter (kerning) spacing. You could not move the whole line o...
by tcaudle
Fri May 26, 2017 2:11 pm
Forum: Hypertherm Plasma Cutters
Topic: 45xp voltage reading or torch compatibility
Replies: 2
Views: 47

Re: 45xp voltage reading or torch compatibility

Well, since the voltage readout does not come from the torch it stands to reason its not the torch . The reading is taken inside off the Workclamp and Electrode lines on the main PCB and divided down and filtered by an on-board circuit so what you see at the CPC connector is not tied to a torch. The...
by tcaudle
Fri May 26, 2017 2:03 pm
Forum: Plasma Cut Quality Forum
Topic: Tip Slag Finecut nozzles
Replies: 10
Views: 127

Re: Tip Slag Finecut nozzles

You may need to raise the recommended cut height. You should use the full shield for the fine cut not the simple ring. Raising the Preset volts raises the cut height. Jim Colt recommends .07 arc gap for fine cut . We cut everything from 14 ga and thicker with 45A consumables. Recently we cut some 18...
by tcaudle
Thu May 25, 2017 1:24 pm
Forum: CNC Plasma Cutters General Forum
Topic: CandCNC Feather touch setup help required
Replies: 25
Views: 583

Re: CandCNC Feather touch setup help required

If you use G31 you have to make sure you setup the Probe Input in MACH to the same input Port and Pin as Z home
by tcaudle
Thu May 25, 2017 11:18 am
Forum: Hypertherm Plasma Cutters
Topic: Trouble with THC voltage
Replies: 12
Views: 176

Re: Trouble with THC voltage

From our perspective the "epidemic" of Hypwertherm divider failures is overstated. When this first started over three years ago we have worked directly with Hypertherm Enginnering (not tech support) and asked them to analyze our circuit and to give us any scenario where our high impedance ...
by tcaudle
Tue May 23, 2017 7:51 pm
Forum: CNC Plasma Cutters General Forum
Topic: Anyone ever converted Torchmate to ballscrews?
Replies: 8
Views: 178

Re: Anyone ever converted Torchmate to ballscrews?

To increase speed on a table with lead screws : 1. Decrease the thread per inch count with new courser leadscews 2. Get leadscrews that are multi-start. 3. add belt pulleys to step up the RPM 4. Switch to Servo motors that have more inherent RPM Options 1 - 3 MAY need higher torque motors because yo...
by tcaudle
Tue May 23, 2017 7:38 pm
Forum: File Conversion Help Wanted
Topic: Can CorelDraw output DXF format for autocad 2004???
Replies: 2
Views: 40

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

Usually you can use an older export just not a newer one. R14 was released in 1997. 2004 was released in 2004. It may not be the release. You will have to explode fonts (turns them to ojbects)
by tcaudle
Tue May 23, 2017 7:32 pm
Forum: CandCNC
Topic: volts not showing
Replies: 3
Views: 79

Re: volts not showing

A new PWM won't fix it. Your looking at the wrong end of the horse. That system displays Troch VOlts via the RS232 serial port. I'll bet the DTHC ONLINE LED in MACH is not one either.....no serial comm no volts display
by tcaudle
Sun May 21, 2017 4:32 pm
Forum: CNC Plasma Cutters General Forum
Topic: Anyone ever converted Torchmate to ballscrews?
Replies: 8
Views: 178

Re: Anyone ever converted Torchmate to ballscrews?

What do you think would be the best option to upgrade this torchmate to? I am still trying to figure out what parameter of the table you want to improve by upgrading ? Ballscrews have LOTS less friction than an ACME leadscrew. BUT you are not going to improve your resolution unless you go to a ball...
by tcaudle
Sat May 20, 2017 3:14 pm
Forum: Plasma Cut Quality Forum
Topic: need some help
Replies: 1
Views: 86

Re: need some help

What consumables are you using? Just cranking down the AMPS on a cut does not make the cut better it just puts less power per sq inch. Consider a hose with a nozzle. If you simple tunr down the pressure into the hose and the nozzle stays the same then the stream becomes less focused. The kerf does n...
by tcaudle
Sat May 20, 2017 3:02 pm
Forum: CNC Plasma Cutters General Forum
Topic: setting up proper grounding
Replies: 7
Views: 207

Re: setting up proper grounding

There are as many ways to do grounding as there are different types of plasma cutters. A lot of it depends on the plasma but some depends on the way the builder of the controls has provided for their internal grounding and the isolation of the interfaces to the table. Noise takes the shortest path t...
by tcaudle
Sat May 20, 2017 2:51 pm
Forum: CNC Plasma Cutters General Forum
Topic: Drill/tap steel after cutting
Replies: 11
Views: 235

Re: Drill/tap steel after cutting

To take that one step further, if you have the Hypertherm with the RS485 and the interface kit the peck process can be even closer managed so you can back off the amps automatically. Nothing to keep you from doing manually if you peck all of the holes as a separate process. A combo of lower current,...
by tcaudle
Sat May 20, 2017 2:43 pm
Forum: CNC Plasma Cutters General Forum
Topic: Anyone ever converted Torchmate to ballscrews?
Replies: 8
Views: 178

Re: Anyone ever converted Torchmate to ballscrews?

Do some math. Take the max motor RPM (use like 800 to be generous) and divided it in half to keep the motor in its linear torque range . Now divide that by the TPI of the ballscrew. That will be your max CUTTING SPEED where you still have some residual acceleration left to do corners. If you have mo...
by tcaudle
Tue May 16, 2017 7:53 pm
Forum: DIY Plasma Table & Accessory Discussion Forum
Topic: Dan's 5x10 PPLLC & CandCNC Build
Replies: 53
Views: 1863

Re: Dan's 5x10 PPLLC & CandCNC Build

There is no Z axis limit. If you have a mechnaical swtich its hooked up as a HOME (primary ) and backup touch off. If you have the FT-01 Ohmic sensor then its hooked up as a PROBE and is only for touch off. If you want a limit on Z (upper or lower) you will need to add them and put them in the Norma...
by tcaudle
Mon May 15, 2017 8:35 pm
Forum: Hypertherm Plasma Cutters
Topic: 45xp raw arc voltage
Replies: 6
Views: 103

Re: 45xp raw arc voltage

You using Raw Ard Volts? The Hypertherm manual probably assumes you have a local divider card at the plasma and are not running raw volts any distance. The breakdown voltage of the wire has to be over 300V or it could arc to the shield. Most shielded wire is low voltage wire so I would stick with th...
by tcaudle
Mon May 15, 2017 8:29 pm
Forum: Tech Tips
Topic: Looking for answers
Replies: 6
Views: 239

Re: Looking for answers

The table should have the earth rod , The plasma chassis may need to be grounded to the same rod. The rod needs to be as close as possible tot he table and connected to the frame with a stranded heavy cable. Battery jumper cables make pretty good wires. The PC needs its own separate ground as far fr...
by tcaudle
Mon May 15, 2017 8:13 pm
Forum: General Discussion
Topic: Zero Z axis before cutting?
Replies: 5
Views: 113

Re: Zero Z axis before cutting?

tcaudle, I could have done with your help when trying to learn all this as I never found out any of this through the tutorials with Sheetcam. :) Is there a written manual anywhere? in linux the program will not show the post documentation on my machine. Adrian The post documentation is for programm...
by tcaudle
Sun May 14, 2017 6:51 pm
Forum: DIY Plasma Table & Accessory Discussion Forum
Topic: Anyone know anything about Premier Plasma tables
Replies: 7
Views: 173

Re: Anyone know anything about Premier Plasma tables

If all you want is something to play around with and don't mind doing some upgrades (like adding in a THC) and being limited to lighter gauge material ,then it might be a reasonable starter table . If its going to set most of the time unused than no reason to spend more. I would worry more about tab...
by tcaudle
Sun May 14, 2017 6:09 pm
Forum: General Discussion
Topic: Zero Z axis before cutting?
Replies: 5
Views: 113

Re: Zero Z axis before cutting?

There is a value in SheetCAM (Options/Job Options) that sets a value called Plunge Safety Clearance. If you have a POST that puts in the touch off code it should look something like: G28.1 Z.50 in the g-code That gets put in there in the SheetCAM function OnReference() so the number after the Z is t...
by tcaudle
Sun May 14, 2017 5:49 pm
Forum: Plasma Cut Quality Forum
Topic: Nozzle Issue
Replies: 9
Views: 281

Re: Nozzle Issue

On thin material you need to use either ohmic sense or add in some up lift with springs to counterbalance the torch weight. Put the system in single step with the torch off and go through the touch off part and see how far it deflects. Also keep in mind that the pierce delay INCLUDES the plunge time...
by tcaudle
Sat May 13, 2017 3:46 pm
Forum: Inkscape
Topic: DXF not showing any Paths?
Replies: 8
Views: 120

Re: DXF not showing any Paths?

Have you tried saving to Inkscapes native vector format , SVG then importing into SheetCAM as an SVG file? If you can see it in Inkscape and save it in Inkscape as SVG it should export with full curves.
by tcaudle
Sat May 13, 2017 3:41 pm
Forum: SheetCam
Topic: 45xp tool settings
Replies: 4
Views: 89

Re: 45xp tool settings

There are several limiting factors as far as the cutting speed. If your table is underpowered (motors too small or gantry too heavy) then you will not be able to run at higher speeds on thinner material and get good toolpath tracking. It all depends on the the acceleration factor of you table and wh...
by tcaudle
Fri May 12, 2017 3:42 pm
Forum: Tech Tips
Topic: Looking for answers
Replies: 6
Views: 239

Re: Looking for answers

Since that is MACH3 you start with if its locked up or not responding when you fire the torch. HF start plasma are a problem and without voltage isolation at the THC and seperation (physically) of the plasma and an effective grounding strategy it can cause things to go bad. You need to locally earth...

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