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Messages - BluePinnacle

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General Mach Discussion / Re: General question about small CNC mills
« on: November 14, 2017, 01:25:40 PM »
^ There's your problem, it's a little outside its comfort zone.

To be honest when I saw the drawing I thought it was an excellent part for a profile cutter. I get quite complex parts WJ or laser cut all the time and just do finish machining for bearing fits and precision locations. It's so much easier. I'd go for laser cut A2 stainless and practice on the mill with some nice 6082 aluminium, it's so much more satisfying and your tools will last way longer. Happy learning ;)

General Mach Discussion / Re: This is just plain... WRONG
« on: November 14, 2017, 01:18:58 PM »
They still hang you for plagiarism and it's getting easier to spot electronically. Fear not. There's software that will do it automatically.

Let's see, a superman logo in G-code. That's what, a day's work doing it by hand? Let him send his PMs to me, I'll send him a quote and lead time, that should end the discussion. No I and J words eh, that could get messy.

One thing to consider is fitting some resistors across the input pins of the drive board if this isn't already done. This will drop the input impedance of the board and help dissipate any spurious signals while allowing the more powerful signals from the PC to get through uninterrupted. The resistor value depends how much current you can get through from the paralell port or controller board. Equally you can fit pullup resistors to pins that are grounded to activate, reducing their susceptibility to spikes and noise and of course coolant leakage. Gotta keep them angry pixies in check.  

Edit: If all this is in a wooden box you may want to consider a metal one, this will help a lot.

Be scrupulous when grounding things, bring everything back to a single point, no loops.

Re: Emergency stops: If it helps, I have a mains contactor set up which is opened by the NC contacts on the estop button. The driver watchdog circuit is in series with the big red mushroom and the spindle overload, and the extra contacts in the estop button also signal to mach3 that an Estop has been initiated. Thus, if the button is punched, Mach gets signalled and the mains circuits drop out. If Mach *********s itself, the driver watchdog shuts it down; mains off as before.
The mains contactor shuts off power to the spindle and the stepper drivers, so everything stops instantly in the event of any sort of emergency.

Tangent Corner / Re: Whoops !
« on: January 18, 2017, 01:42:48 PM »
It seems it's harder than it looks to derail a train.


General Mach Discussion / Re: Why Not The Same
« on: July 21, 2016, 09:50:04 AM »
^ I was thinking that. If you set and modify parameters during a program they will persist to the next run.
You need to explicitly set parameters to their desired starting point at the beginning of each cycle.
Also, offsets and fixture positions. Cancel all these in the first few lines, then set the ones you want. Cancel them again at the end of the run as a matter of good practice.

Very nice! helpful also that many newer Android devices are waterproof. I'm waiting patiently for one that can resist having a copper mallet dropped on it, but maybe I ask too much.

General Mach Discussion / Re: Dual Monitors
« on: January 04, 2016, 05:12:43 PM »
It's possible. Plenty of graphics cards let you run double monitors. I'm running a Dell laptop with a dock and two DVI connected monitors for 3 screens total. It's a sweet ride to efficiency when running Solidworks and five other things at once. Best of all you can use a triple width background for the final touch of awesomeness.
Mouse coordination is easy. Identify and place monitors using Windows' resolution setup and the desktop extends from one to the other. You can put monitors side by side, or stack them. Use two identical ones if you can.

General Mach Discussion / Re: How do you Cut a Slide Rail?
« on: January 04, 2016, 04:52:14 PM »
Or use a masonry type petrol cutoff saw with water feed, these are great for keeping dust down and should help with cooling.

General Mach Discussion / Re: Moving an axis while code is running.
« on: December 07, 2015, 07:52:43 PM »
I was thinking of just fitting a bigger pump and hosing it in with a wide nozzle. That should work.

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