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lothar baier wrote: Yes, as I said there is some economy of scale, but how many gears of one type are you planning to make? Ten would probably be more than you could sell in a year. -Chuck

lothar baier wrote: The rate of removal of material is proportional to the machine power. In a shop where you charge by the hour, you want a high production rate. The EDM setup I described

150157892150 look atv this machine, its a benchtop 20AMP EDM that runs of 115V , there are several other hansvedt machines in the same category on ebay for about $1500 and up , im really impressed by

OT: (So what else is new... LoL) I recently visited Battleship Cove in Fall River, Massachusetts and toured the ships there. (Well worth the trip, BTW) There was ANOTHER way of making a corner

Yes, but with a mill cut bevel gear, you can feel every tooth meshing and unmeshing. It feels like a really buggered up gear. It might not matter for a switch, though, but isn't that beveled gear

the problem with parts mules is that you really dont know if the unit you get doesnt have the same problem and if it doesnt how long the part will last Chuck Harris <cfharris@...> wrote:

The big multi kilowatt machines are good for making really big parts. But we are just making a tiny gear. You can handle a job like this with a diode, a light bulb, and a small electrolytic

initial setup takes about 45-60minutes you are right on that, this is a one time operation, then put a stack of blanks on and hob them, change the stack and hob the next batch, the time to change the

Actually, making an EDM attachment for a milling machine is really quite easy. Some years ago, I wanted to get into the guts of a microwave oven to modify it for other uses and it was buttoned up

Bob Groschen wrote:

You are, of course right, but letting the experts do their thing will quickly put the gears out of reach of everyone that truly needs them. People that can afford the experts, don't need

well, it was a thought ! keep in mind that we are not talking about high speed or precission gears here Chuck Harris <cfharris@...> wrote: You can't do a decent job of cutting

lothar baier wrote: Does your machine set itself up as you change gear types? As I said, one gear will take a couple of hours to make, there is some economy of scale, but you are unlikely to want to

i remember years and years ago we had a similar problem with another plastic part, we used a part sprayed graphite on it and then plated over a layer of copper, this served as a EDM tool, problem was

You can't do a decent job of cutting a bevel gear on a mill. To quote Machinery's Handbook: "Cutting Bevel Gear Teeth - A correctly formed bevel gear tooth has the same sectional shape throughout

they can be replaced with zener diodes and bypass caps

Well, here I am answering my own question(s). This one was sort of my fault. To wit: When I got this unit, I tried to turn it on, no luck. Seeing the battery charge pushbuttons, I feared the worst

arthurok wrote: Of course it could, but it would take some specialized cutters to cut the gear teeth. These cutters are extremely expensive, on the order of $80 each. Any machine shop would charge

Hi Lothar, The electrode could be something as fancy as a CNC made graphite model, or it could be something as simple as adding a little plating to the original plastic gear. There is no intrinsic