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Messages - Tweakie.CNC

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6332
General Mach Discussion / Re: Enlargement problem
« on: January 19, 2011, 05:56:34 AM »
Come on Lou - nobody admits defeat this quickly.

Get your 'steps per' correct then everything else will fall into place (not sure about your THC though).

Tweakie.

6333
Tangent Corner / Re: Auto Connect
« on: January 19, 2011, 05:14:31 AM »
You really don't want to hear this but going back a few years before I had broadband I somehow picked up an unwanted dialer. It wasn't until I got he phone bill that I found out my PC had been dialing a premium rate number in the Cayman Islands. I took the matter to a tribunal stating that my phone company was complicit in the scam by allowing the call despite knowledge that it was a con trick (I had evidence that others had already complained to the phone company about this dialer) and subsequently had my money refunded.
I was extremely careful after that experience.

Tweakie.

6334
Mach SDK plugin questions and answers. / Re: Impact engraving plugin
« on: January 19, 2011, 03:54:14 AM »
Click the 'Reply' button below to enter full reply mode then select insert image (number 2, second row of icons)

By 100% I am meaning Continuous Wave (CW) operation.

Tweakie.

6335
Tangent Corner / Re: Auto Connect
« on: January 19, 2011, 03:18:29 AM »
Russ,

If it's a Trojan or worm this little puppy will find it http://www.simplysup.com/tremover/details.html
The trial version lasts for 30 days.
To remove other unwanted active components from a windows installation Glary Utilities is good http://www.glarysoft.com/
This is free for non-commercial use.

Good luck.

Tweakie.

6336
General Mach Discussion / Re: Wiring Limit & Home Switch
« on: January 19, 2011, 02:53:00 AM »
Quote
Today, the recommendation is earth all metal really well and ground both ends of the shield.

Brtec,

I would be grateful if you could tell me your source for the recommendation to ground both ends of the shield.

Tweakie.

6337
Mach SDK plugin questions and answers. / Re: Impact engraving plugin
« on: January 19, 2011, 02:17:46 AM »
Just wanted to check that we are talking about the same type of  EHT power supply (PSU).

My interpretation of the use of this type of PSU’s is that the ‘IN’ terminal is used to set the maximum output current that is required for the job in hand (all tubes have a maximum current, which should not be exceeded, which is in turn related to their wattage). This maximum current can be set by applying a DC voltage (0 – 5 Volts) or by applying a PWM signal (0 – 100%). The best method is a matter of choice and I just happen to have chosen a DC voltage but there is no reason why PWM should not be used. The actual tube current is set and or varied by the ‘TTL’ terminal using a variable duty cycle (0 - 100% mark space ratio). This can be achieved either by a Pulse Width Modulated signal or by a Pulse Repetition Frequency signal and again it is a matter of choice which is used.
To use the Mach3 Laser / Engraving plugin the maximum tube current should be set to suit the material then the actual tube current is varied, as necessary, by the PRF output from the Digital Trigger. The output pin used to link the Digital Trigger to the TTL terminal must not be mapped to any other function within Mach. The output pin used to link the speed PWM to the IN terminal must not be mapped to any other function within Mach. From here on it is just a matter of fine tuning to get the best results.

Tweakie.

6338
Mach SDK plugin questions and answers. / Re: Impact engraving plugin
« on: January 18, 2011, 01:38:08 PM »
Sorry buddy PRF is Pulse Repetition Frequency.

What EHT PSU are you using ?
Does it have the same inputs as the one I am using here ?



Tweakie.

6339
Never done it but I have read that many industrial robots are programed by the 'teach' method in preference to getting involved in the trig. and maths.

Tweakie.

6340
General Mach Discussion / Re: cnc screwcutting???
« on: January 18, 2011, 11:32:34 AM »
Dale,

Check the output from your charger, some phone chargers don't put out anything until connected to a load such as a flat battery.

Tweakie.

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