Brass cutting

[David Standing 1Participant @davidstanding1]

Posted by Hacksaw on 10/11/2017 00:29:42:

Blimey … I have a lot of old ME mags I read , and i was going to have a go at a "Victorian ladies folding muff pistol " , that was articled … Maybe not now

A 'muff pistol'? .

We'll just leave that right there .

[Speedy Builder5Participant @speedybuilder5]

The other day, I bumped into an Engineer who had made a 105mm WW1 canon replica, with blank shells to match. The original was 110mm, but under French law 110mm and above are now illegal to own (privately) in working order, so he made it 105mm which is OK ! Great place to live over here.
BobH

[David Standing 1Participant @davidstanding1]

Posted by Speedy Builder5 on 10/11/2017 06:53:54:

The other day, I bumped into an Engineer who had made a 105mm WW1 canon replica, with blank shells to match. The original was 110mm, but under French law 110mm and above are now illegal to own (privately) in working order, so he made it 105mm which is OK ! Great place to live over here.
BobH

That's a very short clergyman!

[Mick B1Participant @mickb1]

Posted by Martin Kyte on 02/11/2017 10:57:59:

Hi Roger

Flat top to the tool and hone to a fine polish. The finish will only be as good as the finish on the tool so make the effort. Cut dry as has been stated.

If you are drilling stone your drills so that there is no rake or they wil grab. This can be done by rubbing the cutting tip on a stone or small diamond card parallel to the drill axis. You will want to keep a set for brass.

regards Martin

If you've a bench grinder with a fine (- ish) wheel, you can use the side of the wheel to grind a zero-rake platform on the drill lip no more than about 1/2 mm wide. Then you can quickly return the drill to standard if it's too fiddly or expensive to keep a separate set for brass.

I've always worked on about 300 ft/min or 100 m/min for the most usual CZ121 brass, which is free-cutting with a discontinuous chip (bits go everywhere as has been said!). There are tougher brasses like CZ106 which I've always machined a bit more like mild steel – about 100 ft. or 30 m/min, a bit of top rake and sometimes bundling swarf ribbons. All for offhand-ground HSS tools.

[David Standing 1Participant @davidstanding1]

Mick

Thanks for bringing the thread back on track

[larry PhelanParticipant @larryphelan54019]

These things are a great idea !! Just the thing to give to your Mother-in-law.to show how much you care,or to that nabour who gets up your nose all the time !

Might try making one myself,although my turning skills are not that good, still———————?

Nice job,all of them.

[Mick B1Participant @mickb1]

Posted by Hacksaw on 09/11/2017 23:51:20:

What's BMG? I don't shoot…

At all…

I've got an early Gatgun tho The coin in pic 1 is a 10p..

Google rifle bullets , I think mine is a NATO issue …

Edit .Ah , browning machine gun..

Edited By Hacksaw on 09/11/2017 23:53:27

Edited By Hacksaw on 10/11/2017 00:04:11

Nah, looks more like a scaled-up Kalashnikov round (7,62 x 39) to me… 😀

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