Recent Posts

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91
CNC / Re: DDCSV1.1 4 Axis controller
« Last post by johnsattuk on November 09, 2017, 07:20:48 PM »
Could someone please explain how to load this new firmware  :Doh:
92
Tools / Re: Indian (asian} lathe.
« Last post by bigman1 on November 09, 2017, 05:23:13 PM »
Hi Jo,
I doubt the low price of Indian machine tools is the quality of the metal,the Indian steel industry is the third largest in the world.
I think the answer in general is the low income of the average indian person.If you visit a website like India mart you will see that the quality looks impressive.I am only looking for feedback from somone who has purchased a tool from them.Thanks.Ronnie.
93
New from Old / Re: Eurospark H425 Die Sinker EDM reborn
« Last post by awemawson on November 09, 2017, 02:42:01 PM »
Usually copper - it's so much nicer to machine.
94
CNC / Re: DDCSV1.1 4 Axis controller
« Last post by chriscnc on November 09, 2017, 01:47:05 PM »
Ok everyone,

Here is the latest firmware with updated English for the new features and a new motion planning algorithm. This is far smoother and adds line 113 and 123, its now leveraging the FPGA for ARC interpolation, and resolution can now be set to 0.001 on line 123. X,Y,Z can all now have different steps per mm and produce a correct arc. To try this set line 113 to software and line 123 to .001 try some code with line 113 on and off and let me know. The new motion will not stop/pause for transitions from g01 to g03 making a smooth CV like path.

95
Tools / Re: Boley 4L
« Last post by RotarySMP on November 09, 2017, 12:29:07 PM »
I was curious how much lower my tailstock is than center height. I turned up a brass slug to within 0.005mm of the 27.98mm tailstock ram diameter, and put a clock on it.

It is about 0.18mm (~7 thou) low when retracted, and quite level at about 0.03mm different along the length when fully extended when loose. It raises up 0.02mm when the ram lock is applied. Given the wear on the bed, this is not as bad as I feared. Sooner or later I'll have to have a shot at scrapping the bed.

It is still a nice old german machine. I was a single 1/100 over my finish cut to size that slug of brass, and at least on this lovely free cutting metal with a sharp HSS tool, taking another  cut of 0.005mm on radius over a short distance cut cleanly, and left a perfect surface finish.
Mark
96
New from Old / Re: Eurospark H425 Die Sinker EDM reborn
« Last post by RotarySMP on November 09, 2017, 11:55:48 AM »
Thanks. Do you always used copper die, or also carbon?
97
CNC / Re: mini engraver
« Last post by RotarySMP on November 09, 2017, 11:53:43 AM »
That answers the question HOW without asking WHY. Pretty cool
98
CNC / Re: DDCSV1.1 4 Axis controller
« Last post by blades on November 09, 2017, 11:43:58 AM »
Thanks Mark. Still learning it...
99
CNC / Re: DDCSV1.1 4 Axis controller
« Last post by RotarySMP on November 09, 2017, 11:32:20 AM »
Nice router Bill.
100
Project Logs / Re: Spindle problem with cincinnati tool and cutter grinder 2 spindle
« Last post by PekkaNF on November 09, 2017, 11:05:44 AM »
Thank you very much. That makes very interesting reading!

P.S. so far this grinder spindle has been fine, has to to but real work soon.

Pekka
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