I have picked up a couple of disposable cameras and salvaged the flash capacitors...in both cases they are 80mfd 330 volts. Is there any reason I can't...
Jack, no reason that I know of. Actualy 80 may be all you need for the work you plan to do. I have never needed to use that selection. Pretty HOT! BTW: Never...
... I just joined this group, and my interests are probably different than most in the group. I also have not read your book yet, although it's in the mail...
... Three notes: 1.) Beware of heating, they will fail if they get too hot and they were designed for low cost, low PRF service. 2.) The ESR or ESL may be too...
... The ... simple ... than ... molds ... be ... it ... "rkseike" talking of stepper motrs on this forum is HERESY!!!! i think you have the wrong idea about...
... *snip* You may be overestimating the "precision" that can be achieved with a "sinker" EDM. I built mine to remove the occasional broken tap/drill and it...
From: "rkseike" <ron@...> ... For the most part, the edm is the last choice when picking a machining to do a job. Also the spark gap needs to be closely...
... machining to do ... machining ... quickly to ... set the ... arc or ... as you ... Mostly ... made up ... and uses ... or more ... option ... finish, ... ...
Ron, Have you tried a square hole using EDM grade graphite ? You should find an improvement over copper.(Less electrode wear) Nick I've tried some experiments...
... CNCZone has a big thread on composite machinery like this. Concrete has some serious problems, but some grouts and epoxy/granite are much better choices....
Not yet Nick, but I had suspected that would be the case. So far the EDM has only taken out *that* tap and some broken 6BA screws in a Frog 500 case. Tha...
I have run both cnc and sinker edms and the cnc are great but kind of slow but you can do things that you just cant do any other way. But!!!! I have built the...
... Sometimes if the thread it too heavily bonded, cutting out to the root of the thread in 3 places will allow the remainder to be freed. Or EDM the whole...
... The "6BA" screws mentioned are close to 4-40. Very hard to dig out screw remains from a #42 hole 3/8" deep! I eventually managed to run a tap through to...
... There are chemical methods for removing small steel taps/screws from aluminum or brass workpieces that work better than EDM. Also brass screws from...
I'm with the fellow that said Helicoils- always stronger in Aluminum than the original thread. With corrosion, even if you remove all the steel, the new...
... According to http://www.mcmaster.com/ Helicoils come as small as 2-56 and M2.5 The taps are neither cheap nor robust in those sizes. David G. LeVine ...
It would not only suck but also be rather embarrassing to break a Helicoil tap. :-) Thanks, Andrey Lipavsky Essex Jewelers 490 E. McMillan St. Studio 205 ...
andrey@...
Sep 14, 2007 6:54 pm
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Heh, that would suck! Not that it's really on topic, but there's an interesting correlation between thread engagement and strength, you can drill oversize for...
... When you try to cut a square hole in a hunk of carbide, you will understand. Even high speed tool steel is rough on small end mills. David G. LeVine ...
Numerous people have ask for a stepper version of the EDM. As a result In the past couple of months I have been running some test using a 200 step per rev...
Thanks Ben for going through all that trouble, I was one of the guys with a 200 step motor. For some reason I thought if the EDM was much more complicated it...
Man I really wasn't paying attention, I just read through some past posts. Any word on a date for your improved board Ben? Well put me on your list as...
... Ben, It is not uncommon to microstep at 4, 8, 10 or 16 microsteps with simple controllers and "wave drive" controllers with many more virtual steps. The...
... Simpler, no. Another approach to a problem, yes. The simplest approach is a manual crank, it is also a really bad one. The DC motor is a good approach,...
I don't have a date at this time I am just trying to work through the best design for time and $$ to include for those who what the stepper option. Ben ... ...
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