Need Help, I am having trouble with the potentiometer. When i turn the shaft i only read 0- 7.39 VDC. When i test, but now the big power resistors are getting...
Kyle, if it's wired correctly, the CW side of the pot should have +12V on it which is the power supply. The CCW side is PS ground (- side). So, the pot wiper...
After extensive test here is what i found. Terminal 7&8 are showing 14 VAC.The banna jacks show 78 VDC. On the 14 pin DIP socket 12.20 VDC on pin #3.Pin #8...
Kyle, See CAPS below... DO YOU HAVE THE CHIPS PLUGGED IN????? ... Terminal 7&8 of what ???? 14 pin socket .. 7 is ground ZERO V... PIN 8 IS ABOUT 6 VOLTS (THIS...
Hi, I've been interested in EDM for a while now, ever since I got interested in moulding things. I had a part time job while I wrote up my PhD in my...
... wire ... While I do not want or need another project, I'll remain an interested onlooker. Plans for a WEDM are available from Dan Mauch in the USA....
... i>nterested onlooker. Plans for a WEDM are available from ... I'm aware of the plans but I am not impressed by the lack of results photos I found in the...
Graham, Thanks for the paper. That things looks realy good. This gives food for thought. Do you think it's possible to use the macopump in Mach3 for the...
What is macopump? There is a configurable input for pausing the tool path and Mach does have the capability to reverse a tool path, I have asked Art who writes...
What is macopump? [Frank de Beer] Oops typo, it is called macropump. It is an endless loop within the mach software that gives you the possibility to read user...
Ben, Thanks for the interest. I am sorry to report that after making good progress at the start I have had to lay the project aside for a while. My Dad has had...
Bill thanks for the up date, I am so sorry to hear of your Dad's declining health and I understand, it can be very draining on a family. I plan on making the...
Just tried the camera trick at the local processor. "can I ask you what you want them for" "err, an electrical discharge machine" "oh" In hind site I should...
I have been busy beating metal and have made up the first of two enclosures. Because I want to experiment with different types of supply I am putting the...
When I say wire I mean as in a wire EDM machine, so the wire cuts like a hot wire cutter or cheese cutter. I hope to use 0.05mm thick wire hence the small...
Power supply done, control circuit wired up. Came to try the control circuit, my idea was to input a test voltage from a DC supply to act as a reference and...
Wouldn't such a thin wire erode too quickly to achieve any significant cuts? Jack ... like a hot wire cutter or cheese cutter. I hope to use 0.05mm thick wire...
the wire is constantly fed between two guides so as it is eroded itself it is replaced This is done in industry on a regular basis and the paper I mention in...
Graham I don't think the lack of a heat sink is the problem. That chip has thermal protection built into it. I think you must have something else wrong. I ran...
I did wonder, I will quadruple check my connections again and as I said check the motor current draw. I'm still really pleased, I took a picture of the supply...
I replaced the blown chip and checked and triple checked the wiring, it just seems to work now. I ended up changing the motor to get a slower feedrate and I...
I really wanted to be able to change the feedrate on my system when playing with super thin wires etc and as I eventually want to do proper CNC wire cutting I...
Graham, my sinker EDM is stepper driven. Variable speed and has rapid up & down push buttons. Size 17 stepper was robbed out of an old 5 1/4" floppy drive. Has...
any further details? Graham ... Graham, my sinker EDM is stepper driven. Variable speed and has rapid up & down push buttons. Size 17 stepper was robbed out of...
I have just joined the group and I know that this question has been asked a hundred times. I have done some searching, but on dial-up in the boonies it is...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
