Messages

331

Show"N"Tell ( What you have made with your CNC machine.) / Re: Gertrude Gets Some!

« on: May 27, 2009, 02:20:21 AM »

either nipple caps or tassle drop earrings.. i like multi functional jewelery...

332

Show"N"Tell ( What you have made with your CNC machine.) / Re: Gertrude Gets Some!

« on: May 26, 2009, 05:07:20 PM »

Dankie Man.. ek is ok van Port Elizabeth af .. ek he vir Francarlo Juweliers gewerk daar!

333

General Mach Discussion / Re: feed rate question

« on: May 26, 2009, 03:27:57 AM »

actually on that note.. anyone else use a nsk2530 and have control over on/off and speed?

the controller unit is fully computerised with lots of io ports.. cant imagine it would be a hard thing to do?

334

General Mach Discussion / Re: feed rate question

« on: May 26, 2009, 03:26:25 AM »

i cut almost everything at 800mm/min but i path at 400mm/min for one simple reason.. the initial plunge is where i break cutters so normally i would have to manually add some feedrates  into my code to make the plunge at  400 mm/min but after a few passes bring it back up to 800mm/min, but since i now have mach i simply path at 400 and after the cutter is in safely i simply crank FRO up till im happy.. i have to do this manually as my spindle cannot be controlled by mach either at this point in the game apparently.. NSK 2530E


not yet played with my motor tuning to give me 1200mm/min so im stuck at 800 for now.. but soon

so in answer to your question.. no software has priority over your feedrate.. since you control mach, at the end of the day you control your feedrate..  i have noticed however my particular screenset wont allow me to override by more than 300%...

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Show"N"Tell ( What you have made with your CNC machine.) / Re: Video of my milling process - need advice on improving efficiency

« on: May 25, 2009, 11:36:40 PM »

just spoken to eric.. he uses something called "jet set"

heat in microwave and form around parts.. Having never tried this myself i cannot vouch for it but if its similar to shellac I cannot see why it would not work.

best of luck with that!

336

Show"N"Tell ( What you have made with your CNC machine.) / Re: Video of my milling process - need advice on improving efficiency

« on: May 25, 2009, 10:27:50 PM »

one of the jewellers/machinists on the other forum does similar when milling brass.. will find out what compound he uses..

337

Show"N"Tell ( What you have made with your CNC machine.) / Re: Video of my milling process - need advice on improving efficiency

« on: May 25, 2009, 09:43:23 PM »

jewellers, diamonds setters  and diamond cutters have been using it for years to hold "difficult" things down while we do abrasive work on it.

338

Show"N"Tell ( What you have made with your CNC machine.) / Re: Video of my milling process - need advice on improving efficiency

« on: May 25, 2009, 09:03:45 PM »

http://en.wikipedia.org/wiki/Shellac

hard as hell.. sticks like mad and and cleans off easily in a bath of luke warm metholated spirits...

above link is for natural shellac but buy synthetic type anywhere..

simply lay down 5mm thick layer, warm your piece so that it will melt top of shellac and let it cool

339

Show"N"Tell ( What you have made with your CNC machine.) / Re: Video of my milling process - need advice on improving efficiency

« on: May 25, 2009, 08:27:23 PM »

um left of centre.. as is my want from time to time..

why not mount your aluminium onto a Chellac base, then cut all the way thru in one pass. you would need liquid coolant to make sure shellac does not loose adhesion but would save you lots of work. on larger work i would not reccomend this but in your case i think will work great.

340

Show"N"Tell ( What you have made with your CNC machine.) / Re: Gertrude Gets Some!

« on: May 25, 2009, 05:41:33 AM »

done and dusted with 20 minutes to spare before my neighbor can officially lay a noise complaint!