Search found 82 matches

by robertspark
Sat Jun 15, 2019 4:48 am
Forum: Problems and questions
Topic: Opening job with old tools crashes my system
Replies: 2
Views: 17

Re: Opening job with old tools crashes my system

are you using the same post processors on both machines
by robertspark
Fri Jun 14, 2019 7:36 pm
Forum: Problems and questions
Topic: Hello all...
Replies: 1
Views: 22

Re: Hello all...

hi welcome to the fun of CNC and learning new things.

sorry can't help with boring
by robertspark
Tue Jun 11, 2019 5:18 pm
Forum: Problems and questions
Topic: Router bit raises instead of lowers
Replies: 3
Views: 344

Re: Router bit raises instead of lowers

check all your axis are moving in the right direction.....

normally z+ is upward and z- is downward

X+ is to your right
X- is to your left
Y+ is away from you
Y- is towards you
by robertspark
Tue Jun 11, 2019 6:56 am
Forum: Problems and questions
Topic: Post Processor Help
Replies: 2
Views: 130

Re: Post Processor Help

you probably want to post a copy of the post processor you are actually using (especially if you have modified something)

and finally does planet CNC have a setting to do something such as a safe retract at the end of the file run.....

suggest post links to whatever and all planet CNC files
by robertspark
Tue Jun 11, 2019 6:51 am
Forum: Problems and questions
Topic: Post Processor Help
Replies: 2
Views: 130

Re: Post Processor Help

have you got a list of all the gcodes that planetcnc uses?
by robertspark
Tue Jun 04, 2019 5:43 pm
Forum: Problems and questions
Topic: Router bit raises instead of lowers
Replies: 3
Views: 344

Re: Router bit raises instead of lowers

which post processor are you using?

are you using a tool number?
by robertspark
Mon May 20, 2019 9:37 am
Forum: Chat
Topic: Cutmaster 60i
Replies: 1
Views: 50

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: 551

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: 454

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: 454

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: 454

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: 454

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: 1501

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: 429

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: 243

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.