Messages

351

Share Your GCode / Re: Suppressor Designs?

« on: May 02, 2011, 03:13:47 PM »

i think the principle is to slow down the gasses that follow the bullet, so look into discs that alter it's flow. I've seen designs that have a pressed flute in each washer spaced apart by a disc, and this seems to work at that caliber.

352

General Mach Discussion / Re: Mill orientation

« on: May 01, 2011, 08:13:39 AM »

it doesn't matter where you home as you'll be machining from work offsets which you can set anywhere on the table. Your plus measurements should be from left to right on the x, from front to back on the y axis, and (for a column mill) from table to uppermost point on the z. These are tool movements.
It's worth having the home so that the tool goes back (table comes forward) on the y axis as you'll have more room to set the job up on the table.

353

General Mach Discussion / Re: tool offsets when writing your own gcode

« on: April 29, 2011, 05:19:52 AM »

I noticed you went down the lathe route in that post, but with my limited knowledge it never occured to me it was based solely on the lathe...doh.

To avoid confusion all tools would have been numbered with tool number and offset number

354

General Mach Discussion / Re: tool offsets when writing your own gcode

« on: April 29, 2011, 05:15:21 AM »

The M6T0101 is a tool change call for a lathe not a mill.

(;-) TP

Ah i see, i'd never have thought of that.

The more you get into gcode the more you notice the seperation between the lathe and mill.

355

General Mach Discussion / Re: tool offsets when writing your own gcode

« on: April 27, 2011, 11:24:05 PM »

the vb script for the toolchanger is an ongoing thing, and can be upgraded as problems occur. I thought the offsets would be called by the last two numbers on the m6 call. eg. M6T0101 with the red 01 as the offset, but it seems Mach doesn't see this.

356

General Mach Discussion / Re: tool offsets when writing your own gcode

« on: April 27, 2011, 04:51:45 PM »

I thought it was g40 for tool radius offset cancellation and g49 to cancel the length offset. Or have I been wasting ink?

I thought it was that way too.

357

General Mach Discussion / Re: Spindle On Off Setup No 5VDC at relay.

« on: April 27, 2011, 01:39:48 PM »

you could use an npn transistor with a limiting resistor to sink the relay to ground.

358

General Mach Discussion / Re: Hood.....where is he?

« on: April 27, 2011, 07:10:00 AM »

same here, we miss you already.

He'll have cnc'd his bed before he gets out.

359

General Mach Discussion / Re: tool offsets when writing your own gcode

« on: April 27, 2011, 04:53:07 AM »

And g41 applies the stored tool diameter of the called g43hxx. To cancel this you call g40 before the next toolchange.?

Do you have to cancel the g43 before every toolchange, or does the next g43 override the previous one.

360

General Mach Discussion / Re: tool offsets when writing your own gcode

« on: April 27, 2011, 04:43:09 AM »

ok, if i want to use a different set of eight tools in the carousel, i would call them as m6t1 to m6t8 for teh tool position and g43h9 to g43h16 for teh z offset to identify the offset.