I certainly discovered the need to back off. As is now I use only 10mA for ionization and 10A for cuts. I want to keep ionization current down for safety reason, do you know if it is harder to get process running at low current?
Regards Nicklas Karlsson On Thu, 17 Mar 2016 15:15:10 +0000 (UTC) Pete_Gruendeman <[email protected]> wrote: > Hi Nicklas: > Did you set up and run the simple RC type EDM? It's a pretty simple > proposition, using a filtered DC power supply, a capacitor in parallel with > the gap and the gap itself. An electrolytic capacitor would work. A > motor-run capacitor, of 50-100 micro Farads would work even better. Hands-on > experience will answer many of you questions, especially in regard to the > stability of the process. No matter how stable your process is, backing up > is part of this artform. > > Pete > -------------------------------------------- > On Thu, 3/10/16, Nicklas Karlsson <[email protected]> wrote: > > Subject: Re: hands-on EDM experience > To: "Pete_Gruendeman" <[email protected]> > Date: Thursday, March 10, 2016, 8:49 AM > > > Hi Nicklas: > > I wrote and sent this last > night but it seems to have bounced instead of reaching > you. I want you to get some hands on experience with EDM, > even if it's a simple RC type EDM that you clamp onto a > milling machine and flush with a turkey baster you borrow > from the kitchen. Even though I had run commercial EDMs, > it was eye opening to run the process manually. The whole > process can be complicated but it doesn't have to be. > Read below. > > > > Hi > tomp and Nicklas: > > > Careful tomp as much of what you wrote is some > pretty technical stuff. It might be over Nicklas' head > since he is new to EDM. I barely recognize some of this > but do recall that Agie offered auto-overcut compensation. > I always turned that off as much of my work was something > like a horizontally oriented cylinder and I typically > orbited about the X-axis. > > > > Nicklas: Have you done > anything with EDM yet?, even with a simple resistive > capacitive spark eroder?, perhaps set up on a milling > machine or other platform? And I don't mean CNC. I > mean with control being provided by your ears and your > hands. And flushing with a baster from the kitchen. Much > of the discussion here will make more sense if you have even > a little hands-on experience with EDM. Being a beginner is > fine. I really want you to know instinctively what a > stable burn sounds like, and what gap contamination looks > like, sounds like and how quickly you need to do something > about it when the burn starts to become unstable. These > various hands-on skills will be more confusing to you when > you try to learn it with the complexities of CNC added to > the mix. Let's get your hands oily and a little EDM > crackling sound in your ears as soon as possible. It takes > very little equipment to replicate Lazarenkos' > experiments and that's all I want you to do to get > started. You can get started with a copper or brass > electrode. Let me know how I can help you get started. > > > > Pete > > Well I am more interested in > the CNC part and an EDM is what I could buy cheap. My first > sparcs will be coffecup EDM with food oil, it is still a few > days away since I have to spend a few days on others. > > > Nicklas > Karlsson ------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
