Hello Guest it is October 18, 2019, 08:45:00 PM

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - Tweakie.CNC

Pages: « 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 »
4911
General Mach Discussion / Re: ONE of THOSE days (;-(
« on: February 05, 2012, 03:19:23 AM »
Thinking totally out of the box....

The torch is loose and at that point in the work the cabling/hose gets tight, moves the torch - when the cabling/hose gets loose again the torch returns to it's correct position.  ;D

Tweakie.

4912
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: February 04, 2012, 02:29:09 AM »
Hi Greg,

Those bicycles were made some time back and the dxf's are long gone. I did come across this GCode which may be OK for you (scale it to your own requirements).

Tweakie.

4913
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: February 03, 2012, 07:43:12 AM »
Hi Greg,

The problem I have is knowing where to start because the cause could be so many things.

You need to be using true Acrylic (Plexiglas / Perspex) and not Polycarbonate. Cast acrylic is best.
Practice initially with rectangles (single axis movements rather than compound) this will eliminate the issue I mentioned earlier.
You need air assist to protect your focus lens from contamination but not so much air that the vaporised acrylic is blown back into the kerf.
The acrylic needs to be supported above a non-reflective surface (I use a home made grid with glass base).
Do not use too much power, just enough to cut through and no more.(Cutting acrylic is a bit like machining metal – there is an ideal speed and feed – put in too much energy and the results will be poor).
Remove any protective film before cutting (some protective film is OK and some is bad so at this stage it is best to remove it).
I achieve best results by setting my focal point about 1/3 of the thickness into the material.

Does this help at all ??

Tweakie.

4914
General Mach Discussion / Re: which software package to purchase
« on: February 03, 2012, 03:45:02 AM »
Try this free program http://www.gsimple.gr/
It is relatively quick / easy to learn and will teach you all the basics for free.

Once you are making stuff then you can start looking around.

Tweakie.

4915
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: February 03, 2012, 02:39:15 AM »
Hi Greg,

I went through this a while back, tried various speed / power settings with no improvement.

Thanks to Sam, who looked closely at my toolpath, he found that my circles / curves were not smooth so the cut was not smooth and the results were rubbish.

This was typical of the problem - note how the true horizontals have been cut perfectly yet all other angles are poor.


After cleaning up the dxf the results were much improved.


Hope this helps,

Tweakie.

4916
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: January 31, 2012, 07:46:59 AM »
Hi Greg,

That's great news, I am really pleased you have it all working OK.

Don't forget to post some pictures.  ;)

Tweakie.

4917
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: January 31, 2012, 05:30:31 AM »
Hi Greg,

I use two different Mach profiles;
For Raster and the Mach plugin the Digital Trigger is mapped to the LPT parallel port pin that is used to fire the laser.
For Vector my GCode has M11P1 to turn the laser ON and M10P1 to turn the laser OFF then Output #1 is mapped to the LPT parallel port pin that is used to fire the laser (the P# relates to the Output Pin#).

You have probably seen this already but the schematic of my laser control is here http://www.cooperman.talktalk.net/circuit2aa.jpg  and the LPT parallel port pin (referred to above) connects to the TTL input. (The two, series TTL gates I am using are there just as a buffer and to ensure a proper 5 Volt logic switching, for the laser PSU, from the parallel port output which could possibly be 3.3 Volts).

Hope this helps.

Tweakie.

4918
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: January 30, 2012, 08:48:09 AM »
 ;D ;D

Tweakie.

4919
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: January 30, 2012, 08:05:39 AM »
Hi Greg,

As I think I mentioned in the PDF, the plugin doesn't necessarily work 'straight out of the box', it takes a bit of practice but once you get the hang of it then I think you will find that the results are extremely hard to beat. I am hoping that one day Art will convert his laser machine to using Mach 3 then he will be able to use his plugin as well  ;D

I would be grateful of a copy of your Vectric PP if it is to be shared.

Tweakie.

4920
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: January 30, 2012, 07:34:34 AM »
Hi Greg,

As Art has made the plugin open source I have made a few modifications to it and the latest version can be downloaded from here http://www.cooperman.talktalk.net/Engraving.dll (just copy paste the dll into the plugins folder).

We all look forward to seeing some pictures (please) of the work you produce with your laser and the plugin.

Tweakie.

Pages: « 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 »