Search found 76 matches

by robertspark
Mon May 20, 2019 9:37 am
Forum: Chat
Topic: Cutmaster 60i
Replies: 1
Views: 19

Re: Cutmaster 60i

I'd suggest that you ask on plasmaspider forum as it covers the broad application of "plasma" in all shapes and forms where as this is for "sheetcam" specifically.

https://www.plasmaspider.com/

{you'll get more passing traffic able to ask your question too}
by robertspark
Fri May 17, 2019 2:47 pm
Forum: Problems and questions
Topic: Loop inner corners
Replies: 12
Views: 118

Re: Loop inner corners

Interesting to think about the math of the inner corner dogbone and an optimum solution to allow for the plasma tail on thick material to catch up + the kerf diameter of the plasma jet that you are trying to compensate for: http://fablab.ruc.dk/more-elegant-cnc-dogbones/ Bit more of a description on...
by robertspark
Mon May 06, 2019 9:19 am
Forum: Problems and questions
Topic: Arc instead of corner
Replies: 11
Views: 119

Re: Arc instead of corner

I disagree, but YMMV maybe your planner is poor in linuxcnc as I cannot see how it can get a relationship such as radius = velocity ^2 / acceleration wrong or have some sort of inaccuracy that you consider to be a poor predictor of arc radius. its physics! Happy to be educated though with something ...
by robertspark
Sun May 05, 2019 1:35 pm
Forum: Problems and questions
Topic: Arc instead of corner
Replies: 11
Views: 119

Re: Arc instead of corner

eg. You can't cut a 1cm square at 10 metres per second. ..... Actually you can...... IF your acceleration is high enough..... Centripetal Acceleration :roll: 8) https://www.khanacademy.org/science/physics/centripetal-force-and-gravitation/centripetal-acceleration-tutoria/a/what-is-centripetal-accel...
by robertspark
Sun May 05, 2019 7:35 am
Forum: Problems and questions
Topic: Arc instead of corner
Replies: 11
Views: 119

Re: Arc instead of corner

G64 parameters are normally default set in the motion controller software (mach3, mach4 and uccnc) Plasma by default should run in g64..... Exact stop will just lead to a mess on the junctions between each and every linear and arc move. Yes you can customise G64 in every file...... If you want to ch...
by robertspark
Sat May 04, 2019 6:44 am
Forum: Problems and questions
Topic: Arc instead of corner
Replies: 11
Views: 119

Re: Arc instead of corner

Your acceleration setting is too low for your feedrate in your CNC controller.

Not a sheetcam problem
by robertspark
Sat Apr 13, 2019 1:16 pm
Forum: Problems and questions
Topic: Rules for THC On and THC Off
Replies: 40
Views: 485

Re: Rules for THC On and THC Off

You can all this through the post processor which is what I have done
by robertspark
Thu Apr 11, 2019 6:01 pm
Forum: Problems and questions
Topic: Scanything calibration
Replies: 10
Views: 123

Re: Scanything calibration

When I had this problem the axis was reversed or the camera was oriented wrong. Suggest a double or triple check ++z is moving to the right and ++y is moving up, away from the operator and all jog in the right direction with numbers increasing, and the camera orientated correctly (get a bit of paper...
by robertspark
Mon Apr 08, 2019 7:45 am
Forum: New features
Topic: Altura inicial de corte por plasma para espesores gruesos
Replies: 8
Views: 158

Re: Altura inicial de corte por plasma para espesores gruesos

What you are looking for is called "puddle jump"

Some THCs have a built in setting for it.

It is possible to add the control via post processor and custom variables which is what I presume the edited post processor does.
by robertspark
Mon Apr 01, 2019 5:56 pm
Forum: Problems and questions
Topic: Path Rules - insert code before M3
Replies: 3
Views: 98

Re: Path Rules - insert code before M3

Keith can you not edit the post processor to do what you want called via a variable?
by robertspark
Fri Mar 29, 2019 6:25 pm
Forum: Problems and questions
Topic: Rule set hesitation
Replies: 1
Views: 574

Re: Rule set hesitation

That will be a common thing. It will be common to very many motion controllers unless they are able to issue commands (m / miscellaneous codes) in sync with motion. It's not a sheet am issue, you need to study your motion controller m and g codes and try to establish what functions run in sync with ...
by robertspark
Wed Mar 06, 2019 10:08 am
Forum: Problems and questions
Topic: Sheetcam operations selection
Replies: 4
Views: 2865

Re: Sheetcam operations selection

If you want to add a custom variable to the screenset

just use the "post.DefineCustomToolParam" function

eg:

Code: Select all

post.DefineCustomToolParam("PlasmaTool", "Preset volts", "presetVolts", sc.unit0DECPLACE, 49, 0, 200)
by robertspark
Wed Mar 06, 2019 9:58 am
Forum: Problems and questions
Topic: Sheetcam operations selection
Replies: 4
Views: 2865

Re: Sheetcam operations selection

If you go to Options >> Job Options, "Thickness of Material" is listed as the 4th text box up from the bottom. For post processors the variable is "materialHeight" normally you don't set the material thickness by tool but more by job especially if you are running a mill or router application where y...
by robertspark
Thu Feb 21, 2019 7:36 pm
Forum: Problems and questions
Topic: Drill Points
Replies: 6
Views: 2949

Re: Drill Points

I don't use mach3 any more, however it sounds like mach is waiting for the arcok signal and that may be causing your problem. I think it's the spindle tab, if you turn off the thc and then use the g04 pxxxx it will be a consistent time period