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Messages 2507 - 2536 of 2536   Oldest  |  < Older  |  Newer >  |  Newest
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2507
Groupers, I am a bit stumped I need to get the two power resistors (20 ohm 50 watt silicone fixed power resistors) can any body tell me where I can get these ...
Stacey Baker
baker844
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Oct 28, 2009
5:03 am
2508
I think someone had luck finding one in the trash in the form of the single heating bar in a toaster oven, either alone or added together to get the right...
James Sterner
jimmy163333
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Oct 28, 2009
5:37 am
2509
You can also use a light bulb or two. and that will let you very the Resistance giving you  more control over the burn, its what I use. _._,___ You can also...
mike maxim
mammike
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Oct 28, 2009
2:30 pm
2510
Light bulbs will work bur they are not the best choice because the resistance increases as the filament heats up. Ben ... From: mike maxim To:...
Ben Fleming
flyppc
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Oct 28, 2009
2:50 pm
2511
In a pinch, I've used a suitable length of MIG welding wire (wire feed type, not cored) to 'simulate' the proper resistance value. The problem arises when the...
Norman C
coresabmw
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Oct 28, 2009
4:25 pm
2512
Hi Cary, I'd love to see your EDM tapping head. You must have a divider circuit to rotate the tapping head some ratio of the EDM ram downfeed? I posted on...
RobertG
roberttgeorge
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Oct 29, 2009
4:18 pm
2513
Folks, I was wondering if I could use this type of power resistor instead of the other type? http://www.alliedelec.com/search/productdetail.aspx?SKU=8954452 ...
Stacey Baker
baker844
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Oct 31, 2009
1:56 am
2514
You could use that resistor but you will need to mount it on a heat sink. For what ever reason Allied has drop the spec. resistor. These suppliers drive me...
Benjamin Nathan Fleming
flyppc
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Oct 31, 2009
3:05 am
2515
Take a look in the photos section on this group at my album (jacktarr68) for my take on the 100 watt 10 ohn resistor. It is made up of 10 100 ohm 10 watt...
jacktarr68
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Oct 31, 2009
11:08 am
2516
I recently ordered the Allied 895-4918 resistors. They work fine and are available. If you order these ones, you might want to also order 2 mounting kits for...
jeffdayman
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Oct 31, 2009
12:06 pm
2517
Yes you can use it but it is inductively wound. A better choice would be from the NH05 series which is non-inductively wound. Aaron Sent from my iPod On Oct...
Aaron Pasteris
pastera
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Oct 31, 2009
2:43 pm
2518
Ben Either way the aluminum housed resistors need to be mounted as the leads cannot support the part against vibration or shock. A smaller part mounted on a...
Aaron Pasteris
pastera
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Oct 31, 2009
2:48 pm
2519
EDM folks, It is possible to combine a Bipolar transistor and a pair of resistors to make a "programmable power transistor" that functions as a resistor, -...
Sanford Roman
sandyroman...
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Oct 31, 2009
5:47 pm
2520
Good point, and your are certainly right about the Non Inductive resistor, it is the preferred type resistor. Ben ... From: Aaron Pasteris...
Benjamin Nathan Fleming
flyppc
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Oct 31, 2009
6:01 pm
2521
Hi all, Another one of Ben's machine lives as of 29OCT2009, albeit with a few minor changes. I've gone with stepper motor drive and an ATMEL AVR mega8...
roofis27
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Oct 31, 2009
11:19 pm
2522
Ken, That is a really nice tribute. Certainly Ben's design is tested and workable and buildable by a huge number of folks out there. Tweaking a good design...
Sanford Roman
sandyroman...
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Nov 1, 2009
12:22 am
2523
The aluminum-housed resistor should work fine. But if you want the spec'd resistor, Mouser has it. Mouser pn 71-HL50-06Z-20. That's mouser.com. I spent the...
gst338lm
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Nov 1, 2009
2:54 am
2524
Okay, so I just received Ben's book on Thursday (super-fast shipment, BTW) and am collecting bits and pieces. I also bought the PCB. The PCB leaves a little...
gst338lm
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Nov 1, 2009
3:11 am
2525
Be Careful. Only the NHL series resistors (not HL) are non-inductive ....
racerjerry2
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Nov 1, 2009
1:51 pm
2526
Even as a lurker and complete amateur to this home edm subject (haven't even bought the Fleming book), I have managed to come up with a question. Over the...
toolingjim
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Nov 1, 2009
7:55 pm
2527
Hi I've been studying this for a while too. While I have not built a machine, here's a stab at it. And open to correction of course........ Kerosene is...
Roland Jollivet
jemelectric
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Nov 1, 2009
8:34 pm
2528
In response to question 1 Using the standard EDM as per the book I burnt out an M14 tap full length of the flutes (well over 2" long) using a 3/8" diameter...
nickjones111
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Nov 2, 2009
10:04 am
2529
Would you be willing to post the Mouser.com parts list that you used for your purchase? I am at the "get the parts" phase right now and this would be a great...
wheezer
crashbone256
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Nov 2, 2009
3:34 pm
2530
Hi Roland, having worked for a company that used deionized water for sinker EDM when they bought 5 new Charmilles I can testify that water is not for sinkers....
cary heestand
packrat0_15
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Nov 2, 2009
3:47 pm
2531
Thanks, Roland. I had wondered about this. In an industrial setting, the oil/water choice will be made for different reasons than we hobbyists will use. The...
toolingjim
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Nov 2, 2009
4:57 pm
2532
Ok, so it's basically because of the swarf volume. After seeing this slimy swarf stuff on a Sodick once, I figured it might be the dissolved gasses in the...
Roland Jollivet
jemelectric
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Nov 2, 2009
5:00 pm
2533
... Here are the part #'s I have conveniently at hand. HTH, GsT 647-UVR2C102MRD Nichicon Radial Aluminum Electrolytic Capacitors 160volts 1000uF ...
gst338lm
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Nov 2, 2009
7:00 pm
2534
Hi Roland, seems like your more interested in small hole drilling.  In the hole drills at work they did use softened tap water run through a reverse osmosis...
cary heestand
packrat0_15
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Nov 3, 2009
4:29 pm
2535
Hi, has anyone here build a wire edm before ? I'm looking for a suitable power source schematic. Or can i use the power stage of any sinker EDM ? Thank you ...
Frank-P. Kurda
fpkurda
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Nov 6, 2009
11:32 pm
2536
The Group meets on the third Sunday each month (this month Sunday 15th NOVEMBER, 2009) - at: McDonalds McCafe Corner Canning Highway and Berwick Street ...
jacktarr68
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Nov 12, 2009
10:20 am
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