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Member postings for Robin

Here is a list of all the postings Robin has made in our forums. Click on a thread name to jump to the thread.

Thread: A ghastly bodge
03/10/2017 08:08:46
Posted by Phil Whitley on 02/10/2017 18:12:03:

You could contact the seller in Guadong and ask for some jets drilled, but not threaded, or even ask for them in M6x.75, they can be very accommodating, sometimes you are dealing direct with a maker who has one machine that makes one part!!

I don't speakee Mandarin, they don't understand English...

Size: 1.75/0.4mm
We not have sell 0.75.
The goods what you see is what you get ,like our website's picture show.
Please read the goods & shipping description cleared before your bid.
Thank you
Elf/Service

02/10/2017 18:06:18
Posted by Nick Hulme on 02/10/2017 12:06:12:

Why not drag yourself into the 20th Century and mill it? Thread milling is as cool as a hippy penguin's Jesus sandals

Last time I looked thread milling cutters were priced the same as relics of the true cross. Have they made progress in the direction of affordable? sad

02/10/2017 16:20:24
Posted by Michael-w on 02/10/2017 14:48:50:

Robin, oh, my friend, you haven't seen a ghastly bodge until you've seen my first copper boiler.

This has become nigh infamous, and one I certainly wont live down here... cool

I cannot be reassured until I have seen this boiler.

A picture is required to make me feel better crying

30/09/2017 08:47:11

After watching all those episodes of How it's Made I get terrible urges to set up my CNC mill with a whole mess of bits and HSS cutters screwed to the bed. Sadly the bodge works so well (touch wood) I have no need.

I don't actually know what blocked the nozzle in the first place. I always take the filament through a foam wiper to displace gunge and I use brass tweezers to remove the drool. It can't be swarf from the thread cutting because it seals below the thread.

A mystery.

Thread: blistering suddenly appearing
26/09/2017 12:55:43

Has it lifted from the bed? This could be ploughing???

Thread: What Did You Do Today (2017)
25/09/2017 20:41:01

John, you will have to come and shoot some ML sporting clays with me, first Sunday every month just outside Guildford face 1

25/09/2017 17:45:09

There is something deliciously pointable about a Baker. Did you see there is a signed copy of his book Remarks on Rifle Guns up for sale? I am trying very hard not to buy it but I am not strong... embarrassed

25/09/2017 15:39:47
Posted by John Gardener on 25/09/2017 12:47:58:

Stickledown Range at 900 yards this morning.

Huh, call that a gun wink

**LINK**

Did that work?

Thread: My very own Quick Change toolpost
24/09/2017 14:45:25

I would be hugely inclined to bend it rather than slide it to get the grip. That looks a bit wobbly. OTOH, what do I know laugh

Thread: How strong are threads in 3D prints?
24/09/2017 14:41:00

If you were designing with 3D printing in mind would you not prefer a screw with a sharp helix around a cylindrical core? This, I presume, is to attach a 3D printed part to something with an existing thread...

Thread: Chuck a mile out
24/09/2017 10:57:39

You have to fish for clues... Is the chuck body out by the same? Is the error still .01" and inch further out? Do different size bars have the same error?

Thread: Ultrasonic cleaning
23/09/2017 13:00:51

Well refined sperm whale braincase oil everytime.

I do have a little bottle of sperm whale oil, got it from some mad Norwegian, but I think it is only rendered fat not the good stuff sad

Thread: What Did You Do Today (2017)
22/09/2017 11:46:19

English guns have a brass pip foresight, when it goes missing they have a hole through to the bore so I think they were riveted on.

Don't envy me quite yet, there is a great lump of platinum touch hole that could blow out on the first shot thinking

22/09/2017 09:42:52
Posted by Brian Hutchings on 22/09/2017 09:15:05:

It seems a shame to spoil it with duct tape. Can the new foresight be soldered or Loctited on?

There is method in my madness, black duct tape will make a shiny barrel stand out against the sky better than any piddly little foresight ever could thinking

Nock's breech, 12 gauge, friction free lock and a good drop. How can I lose? Very easily wink

21/09/2017 22:01:35

Made by George Wallis of Hull, 1731-1803. It is a 12 bore flintlock which I shall be shooting in a sporting clay completion 1/10/17 so I have just over a week to replace the missing foresight and the parts started arriving today.

The plan is to fix on a small brass pip using as much black duct tape as I can possibly hope to justify thinking

Thread: A ghastly bodge
21/09/2017 18:41:03

The M6x0.75 didn't look much like my idea of a bottoming tap but a quick whizz on the bench grinder brought it back to spec. The crossed thread is not exactly pretty but proof of the pudding is in the eating and I see no leaks...

Question is do I tool up to make some? dont know

Thread: Drill flute orientation
21/09/2017 08:54:14

Mozart drills.

Made from Wolfgang carbide?

Robin

 

Edited By Robin on 21/09/2017 08:54:42

Edited By Robin on 21/09/2017 09:08:55

20/09/2017 21:39:05

Yeah, yeah, but if the name of the game is remembering some way the flute orientation could possibly matter then I think I can claim a Brownie badge. There is no fun being a smart arse if there are no badges to collect you know cheeky

20/09/2017 20:35:46

If you put the cutting edges horizontal you can apply a rigid sideways displacement to a wandering drill tip by running the cross slide up against it. This cuts a perfectly centred conical dent which guides the bit back on course as you release the pressure.

20/09/2017 20:28:40

There is a notion that the lathe defines the centre line of the workpiece with the slowest moving material. It moves faster as you move away from the centre.

If there was any way to persuade the drill to follow that line it would be wonderful, but a Jobber bit has no cut in the centre so I thought it would shy away from that non-moving centre line.

Then I realised that there was no way the Jobber drill could tell it had shied because as far as it was concerned, it's own centre is always the slowest moving.

Then my brain imploded laugh

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