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641  General CNC Chat / Show"N"Tell ( Your Machines) / Re: AL54b (lathe) project from New Zealand on: December 08, 2010, 02:38:32 AM
It is normal for steppers to get hot. Their operating temperatures are fairly high. Up to 70 degrees Celsius is absolutely normal. If you can't hold your hand on it for more than one second then it's about 65 degrees.

The G251 has a current reduction feature while motor is idle, but to enable it you must use a current limiting resistor, even if it is the top 3.5A of the drive.

Dan
642  General CNC Chat / Show"N"Tell ( Your Machines) / Re: AL54b (lathe) project from New Zealand on: December 07, 2010, 02:39:19 AM
Very clean and tidy!

Dan
643  Mach Discussion / General Mach Discussion / Re: Driver test question............. on: December 07, 2010, 01:19:07 AM
Hi,

Did you shut down Mach3 before running the driver test?

Dan
644  Mach Discussion / VB and the development of wizards / Re: key cutting on: December 04, 2010, 11:15:02 AM
Hi AR,

Thanks for the info. Have been always curious about how this works.

Dan
645  Third party software and hardware support forums. / LazyTurn / Re: Inscribed circle, what am I missing? on: December 04, 2010, 01:02:44 AM
Hi Rich,

Thanks for finding this. Can't take the credit for this, as Jim is the one who found this Wink

As to the tool inserts, the world standard to define the dimensions of inserts is by using the inscribed circle, (except for parallelogram shaped inserts). It is coded in the number of eights of an inch. It is usually a sequence of three numbers along with insert thickness and tip radius. In metric system the insert is defined by the cutting length in mm along with thickness and tip radius. Machinery's Handbook has a good description of the American standard.

Dan
646  Mach Discussion / VB and the development of wizards / Re: key cutting on: December 04, 2010, 12:41:10 AM
The only trick is you need to work out the code of the key.

And how is that done?

Dan
647  General CNC Chat / Show"N"Tell ( What you have made with your CNC machine.) / Re: RC Gyrocopter on: December 03, 2010, 08:28:51 AM
Like it! Is it your own design?

Dan
648  Mach Discussion / VB and the development of wizards / Re: key cutting on: December 03, 2010, 01:57:07 AM
Hi AR,

So how does it work if I needed to make a key to match an existing one? I can see no point in being able to produce a new key if you don't have a matching lock for it.

Dan
649  Third party software and hardware support forums. / LazyTurn / Re: Inscribed circle, what am I missing? on: December 03, 2010, 01:46:33 AM
Hi Rich,

I don't think I understand your point about insert tolerances. Define it whatever you define in LT, in the end it all comes down to touching off the bar and measuring the diameter. Furthermore, for discussion purpose, the insert tolerances are much better than what you mentioned. It is in the range of 0.01mm (0.0004") for the critical dimensions.

Dan
650  Mach Discussion / General Mach Discussion / Re: What would make the size of holes change during cutting???? on: December 02, 2010, 09:35:57 AM
Hi Lulu,

It does the same thing no matter where you place the work on the table...? Can you post the Gcode?

Dan
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