www.pulse-jets.com

That's a thing of beauty.

Just bought myself a minimum viable TIG machine at a knockdown price, need to find myself some argon at a price that doesn't require selling a kidney and then I'm planning on making up Larry's last published design (Lady Anne R09). I'd have done it with gas, but I don't have access to oxy-acet' any ...

Excellent!

Hi all. Been a while since I've been around, hope everyone is staying safe and well in these difficult times.

A happy and prosperous new year to you all, keep making obnoxiously noisy gas burners.

Simon

Not mine. You've probably already seen this.

https://www.youtube.com/watch?v=28XbT11lL24

Yum. Carby!

You might find this interesting, perhaps even related...

http://bora.uib.no/bitstream/handle/195 ... sAllowed=y

You can do better than this, Mark

https://www.youtube.com/watch?v=FEOEyDRzkNE

If I was trying to do that... First off, I'd make up an expanding arbor, if I were trying to pierce the bottom of a "jar" that I could get into, or contracting chuck to hold the outside. Make the thing from aluminium disks / rings, say 10mm thick and under (or over) sized by something like 0.05mm, s...

WRT the 5mm hole, it might be that they're trying to meet some ridiculous tight tolerance (either specified by you, or "default") rather than having trouble actually making a hole. I can see it being properly hard to meet, say, a radial tolerance of ±0.01mm in glass. Did you ask what the problem was?

Aww, man. That's wonderful.

The quartz jar is excellent. Well done!

What a hoot!

I'll get my coat

Go on, order a blown glass lockwood or escopette. You know you want to.

That looks wonderful. Here's hoping for some cooler weather for you to fire it up.

Etching aluminium's dead easy.