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Member postings for Peter Spink

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

Thread: Small chrome plate job
13/03/2017 18:27:06

Thanks Adam - sounds like a plan!

Will post more pics when finished.

13/03/2017 17:41:50

Many thanks all - some good leads to work on!

Based in Esher Chris.

These are pics of the clock as requested Neil.

Nixie front.jpeg

Top view.jpeg

I made a similar one many years ago with individual ICs and a transformer to supply the HV. This one is a mix of old and new tech. The main PCB is from a company called pv electronics and contains all the drivers etc. including the 180v supply for the Nixie anodes. The wiring to the Nixies is very much 'old school'!

Still haven't decided to chrome the front panel or just polish the brass. The case will be a light maple with comb jointed corners.

Apologies for the lack of Model Engineering content in the post but the holes in the brass were cut with the 'Rotabroaches' from Cromwell tools. Very good price!

12/03/2017 23:08:13

As above - anybody got a contact for a small one off chrome plating job?

Nixie tube clock 1/8" brass plate about 8" X 2 "

Cheapest I've got so far is a minimum charge of £75

Thread: Tool clamping plate
06/02/2017 20:00:54

I'm in Esher Chris so carriage could be expensive but happy to pay if needs must!

Grateful for any links/addresses.

Cheers

Peter

06/02/2017 18:37:02

Thanks for the info chaps - I find it easy to buy rod and bar stock from the usual suppliers but thick plate material seems much harder to source!

05/02/2017 22:25:43

Looks good!

Would like to put something like that on my pillar drill.

Is that steel or ally?

What is 'flash ground' mild steel plate and where from?

Peter

Thread: Why is the pilot diameter of a counterbore so large?
02/02/2017 22:32:26
Posted by John Stevenson on 30/01/2017 22:52:21:

Tool for trepanning the broken bit of a centre drill out.

Excellent, how many times could I have done with one!

Thread: Stamping numbers
02/02/2017 21:42:06

11/10 for improvisation!

Thread: Optical drill chuck
01/02/2017 21:03:03

This is my version of the Centre Cam made a few years ago. Wouldn't be without it!

Centre cam

Delrin cone housing perspex ring diffuser, home made PCB with surface mount LEDs underneath. Another PCB mounts the USB socket and a pot for setting the LED brightness. Mounted on a 2MT arbor.

Centre cam

LEDs are quite bright but AGC in webcam software copes most of the time.

Centre cam

Set up for edge finding/location.

Centre cam

Screen showing 0.050 holes drilled at .050 centres on test piece.

Thread: Optical chucks
31/01/2017 22:22:52
Posted by Journeyman on 30/01/2017 16:49:47:

This web article describes a home build centre finder using the inards of a cheap web cam, might be of use. Issue 121 of MEW

John

Edited By Journeyman on 30/01/2017 16:52:38

I built one of these three or four years ago. It's mounted on a 2MT arbour and the fiddly bit was getting the camera lined up with the axis of the mill. In conjunction with the DRO it is one of the most useful things in my workshop for edge finding, centring and measuring etc.

Even though the software is still available on the site, the chap that wrote the software is no longer supporting it.

Presumably an alternative would be the camera plug in on the Mach 3 software?

Thread: Drilling large holes
26/01/2017 07:57:36

Bad luck - mine arrived yesterday . . . .

Ordered a few other cheap bits and pieces as well.

Great service smiley

22/01/2017 17:22:33

Thanks for that - just finished making an arbor for them whenI saw your post!

Two ordered.

Peter

16/01/2017 23:24:32
Posted by Robbo on 16/01/2017 23:17:27:

Have used Rotabroach cutters for years, having made an arbour for them, including the pilot. After having bought one on ebay for a pittance, out of curiosity. Soon bought several more. Excellent hole cutters.

Carry on Mike.

Having only ever bought one so far, is the shank size standard over a range of sizes?

i.e. if I make an arbour for the one I've got, will it be useful in future?

Peter

16/01/2017 17:47:56

Bought one to cut some 28mm holes in 4mm brass. Only slight problem is the size of the shank which is too big for any of my collets. Used a small three jaw chuck instead with no issues and cut lovely clean holes.

Peter

Thread: Quick change tool holders
04/01/2017 22:57:45

All interesting stuff, many thanks.

All seem to fit OK but just four that are too high.

Be nice to get them all in the ball park. Is 0.020" too much to take off with a surface grinder? smiley

Thread: Dickson Toolpost - Tool Holder Rack
04/01/2017 17:01:22

I seem to remember Model Engineers Laser did a kit but it's not on their website. I would like one too.

Peter

Thread: Quick change tool holders
04/01/2017 11:13:22

Many thanks for the replies chaps but even from the drawings I cannot see a definitive dimension for the thickness of the lower part that the tool rests on (which is quite critical on my machine). Maybe that's why some of mine are different - the knock of merchants couldn't work it out either laugh

Measuring all mine again, the favourite dimension seems to be 0.230 max. which, with a 10mm tipped tool holder gives 0.025 clearance for adjustment between the holder and the topslide.

Note to self: take a pair of calipers to exhibitions in future!

Peter

04/01/2017 09:26:48

I have a collection of 14 Dickson tool holders purchased over the years at exhibitions, when I foolishly assumed they were all the same. Recently I needed to mount a 10mm insert type threading tool and couldn't get it low enough on my Super 7. Out of interest I measured the base thickness of all my holders to find the thickest was 0.264 and the thinnest was 0.222 which is one that I could mount said tool at the correct height. Only a couple of pairs were the same which were probably bought at the same time.

Anyone know the correct dimension?

Thread: Stuart 10V Hiccup!
21/12/2016 18:46:54

Bought a spotting drill from:

http://totoolsupplies.co.uk/

recently but V. expensive (about £20 inc postage etc for a 3mm one)

Be nice if any of our usual suppliers stocked them at a more reasonable price!

Thread: Greetings from Esher
04/12/2016 17:09:36
Posted by Brian Hutchings on 04/12/2016 07:50:39:

Welcome Peter, any relation to Norman?

Brian

Thanks Brian,

No relation as far as I know!

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