Messages

531

Show"N"Tell ( What you have made with your CNC machine.) / Re: An unusual application for Mach ?.

« on: December 12, 2009, 12:12:11 PM »

now ain't that the cats meow. Pretty slick indeed, Tweakgyver.

532

Show"N"Tell ( What you have made with your CNC machine.) / Re: M1 MILLING MODEL

« on: December 12, 2009, 03:58:58 AM »

Hey, that's almost kinda cool.  I do hafta ask WHY!!!! WHY WHY WHY would anybody in their right mind spend the time and money on such a thing....and not make it 4 wheel drive. 
Rich, if you do decide to make the pistol, you gotta take a video of it firing when you get finished. Kinda goes without saying, really.

533

Show"N"Tell ( What you have made with your CNC machine.) / Re: M1 MILLING MODEL

« on: December 12, 2009, 12:04:23 AM »

Why scale down ? I'd scale up and make bigger bangs.

Good one Ed!

534

Show"N"Tell ( Your Machines) / Re: 1987 Bridgeport Production Center Interact 412 to Mach3 Conversion

« on: December 10, 2009, 02:29:48 AM »

Nice clean shop you've got. Certainly one to be proud of.

535

Show"N"Tell ( What you have made with your CNC machine.) / Re: M1 MILLING MODEL

« on: December 08, 2009, 12:22:23 AM »

Panaceabeachbum has a show and tell post of some of the scaled firearms he has done. He might be a wealth of knowledge if you have any questions, Rich. Some of his stuff is       

536

Show"N"Tell ( What you have made with your CNC machine.) / Re: M1 MILLING MODEL

« on: December 07, 2009, 03:12:48 PM »

that looks really nice Rich. Very impressive. Thanks for sharing the photos.

537

General Mach Discussion / Re: DXF file for Rack & Pinion

« on: December 06, 2009, 12:36:42 PM »

Usually, the manufacturer will have models of their products.

538

Show"N"Tell ( What you have made with your CNC machine.) / Re: A Short Video.

« on: December 05, 2009, 10:44:41 PM »

  Good stuff Tweakie. Didn't know what it was till 1:00.
Jeff: right click the link, and save it to your computer. Then open it. It's in standard windows format, so there should be no problem if your using windows. It may not open correctly if you just click the link.

539

G-Code, CAD, and CAM discussions / Re: construct & call subroutines

« on: December 05, 2009, 10:53:58 AM »

Here's a quick example.

G90 G01 X0.0 Y0.0 F1000(absolute, line move, feedrate)
M98 P1 (M98=call sub, P=sub# to call)
M98 P2
M98 P3
M98 P4
M30 (program rewind)
O1 (sub#)
X0.0 Y0.0
X1.0 Y1.0
X0.0 Y0.0
M99 (sub end)
O2
X0.0 Y0.0
X-1.0 Y-1.0
X0.0 Y0.0
M99
O3
X0.0 Y0.0
X1.0 Y1.0
X0.0 Y0.0
M99
O4
X0.0 Y0.0
X-1.0 Y-1.0
X0.0 Y0.0
M99
%

The manual goes into pretty good detail about subs, and with a bit of practice code, the methods become clear. Here is a link for the manual
http://www.machsupport.com/docs/Mach3Mill_1.84.pdf
I would keep it handy, it is well written, and covers tons of stuff.

Sections you might find relating to subs are...
10.5.2
10.8.7
10.8.8
I'm sure there's more, but that's just from a quick scan.
Enjoy 

540

FAQs / Re: In need of a low speed spindle motor

« on: November 29, 2009, 11:35:54 AM »

I can give you some "been there, done that" advise on using a rheostat. You will loose a considerable amount of power when slowing the motor down. Plunging a .125 endmill down 0.04 might not be any problem, but doing anything that taxed the motor at full speed, would be futile at a slow speed. Start the motor at full speed, then ramp down the speed. Don't try to start it slow, unless you want to blow fuses or fry the windings in the motor. Good luck.