Search found 844 matches

by tufty
Sat Oct 28, 2017 5:11 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1691
Views: 244741

Re: Odds and ends

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...
by tufty
Fri Oct 27, 2017 7:00 am
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1691
Views: 244741

Re: Odds and ends

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?
by tufty
Thu Oct 26, 2017 6:06 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1691
Views: 244741

Re: Odds and ends

Aww, man. That's wonderful.

The quartz jar is excellent. Well done!
by tufty
Sat Oct 21, 2017 6:19 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1691
Views: 244741

Re: Odds and ends

What a hoot!

I'll get my coat
by tufty
Fri Oct 06, 2017 7:52 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1691
Views: 244741

Re: Odds and ends

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

Image
by tufty
Thu Oct 05, 2017 6:21 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1691
Views: 244741

Re: Odds and ends

That looks wonderful. Here's hoping for some cooler weather for you to fire it up.
by tufty
Sat Sep 23, 2017 10:16 am
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1691
Views: 244741

Re: Odds and ends

Etching aluminium's dead easy.
by tufty
Wed Sep 13, 2017 10:04 am
Forum: Off topic forum
Topic: Good luck with Irma
Replies: 2
Views: 53

Re: Good luck with Irma

Ah, good news.
by tufty
Sun Sep 10, 2017 8:21 am
Forum: Off topic forum
Topic: Good luck with Irma
Replies: 2
Views: 53

Good luck with Irma

to Mark, and any other floridans.

Let us know you're alright when you can.
by tufty
Thu Sep 07, 2017 7:48 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1691
Views: 244741

Re: Odds and ends

That looks great, man.
by tufty
Sun Sep 03, 2017 6:28 am
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1691
Views: 244741

Re: Odds and ends

I wonder if this would work on quartz?
I don't see why not, power wise, although this article implies that the better the glass, the less chance it will work nicely : https://www.engraversjournal.com/articl ... index.html

Makes for an expensive squid logoed jam jar, though.
by tufty
Fri Sep 01, 2017 5:48 am
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1691
Views: 244741

Re: Odds and ends

If you don't mind my asking, how much did they quote to make it?

/me has visions of a 100% quartz inline jet
by tufty
Thu Aug 31, 2017 4:17 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1691
Views: 244741

Re: Odds and ends

Yeah, the language barrier is a big problem, mostly what you write will be translated to chinese via google translate, and the reply translated back to 'murican via google translate - machine translation's getting better, but there's still loads of room for ambiguities to become a problem. And yeah,...
by tufty
Thu Aug 31, 2017 6:10 am
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1691
Views: 244741

Re: Odds and ends

If you really want to square that up, you probably want lathe + toolpost grinder. Diamond wheel on a dremel type thing would do the trick.
by tufty
Wed Aug 30, 2017 6:00 pm
Forum: Valveless pulsejet forum
Topic: Annular M20
Replies: 4
Views: 68

Re: Annular M20

The idea is, as you say, compelling. Surely all that symmetry should make for better performance...

I never got anything more than very unconvincing fart noises from my attempts.