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Could you get around the outgassing (or slow it down) by storing the tube in a pressurised container? Pressurised with what I'm not sure but can the hobbyist get hold of the right mix of gasses?...

I've always been interested in laser cutters but have never had the need for one so could never justify the big costs of the units.
These Chinese ones make it just doable for me as a hobbyist but...

That scores pretty high on the simplicity front and should do the job. Thanks
I suppose if you were always going to drill the same size holes in the same material you'd soon get a feel for the feed...

I've made a couple of things called babington burners
Babington Oil Burner HOWTO

They do a pretty good job at burning old oil but are a bit temperamental. The holes in the end of the ball are sub...

Absolutely right there bozidar, it is something cheap that will do the occasional hole. I just get carried away when I start thinking of these things and end up trying to build a jumbo jet instead of...

That coil thing is the sort of thing I had in mind. Very simple and good for the odd hole, not sure how my 0.1mm electrode would put up with the bashing in to the work piece though. I had thought of...

Thanks for the reply,
No I haven't seen that design does it set up an R/C oscillator with the capacitors? Could you point me in the direction of any more info on it?
I've seen the design using a...

Thanks for that.
I'm not saying the book isn't worth every cent of $50 but I'm afraid that's too expensive for me. Especially as this is only one small project of many, many that I don't even...

Did anyone progress this ? I started thinking about EDM for very small hole drilling only yesterday and read some of the various stuff on this here web thing.
Doesn't some MIG/TIG machines already...

The USB to parallel may not work due to not many of them not being bi directional. Has anyone tried a PCMCIA card in a laptop with Mach 3. I can’t see why that wouldn't work or even try and get a...