What did you do today (2015)

[Michael GilliganParticipant @michaelgilligan61133]

What did I do today? … Finally gave up searching, and decided to ask for help:

A while ago, I posted a link to a very handy little on-line 'circular divisions' generator.

… I can't find it

Does anyone remember it, please.

MichaelG.

.

Note: it's not the 'Setting Circles' one [which is also excellent].

 

Edited By Michael Gilligan on 21/04/2015 11:18:40

[Oompa LumpaParticipant @oompalumpa34302]

Today:- today after many, many years of putting up with either repetitive BBC broadcasts, commercial radio stations where the presenter just loves the sound of his own voice or the just outright REPETITIVE mindless commercials encouraging me to change my life by winning at BINGO or suing my employer or some other mindless pointless persuit which is bound to end in disappointment – SALVATION arrived!

It came from Denmark in the form of a USB isolator. I have now hooked a laptop up to the DAC via said Isolator and there is just beautiful clarity as one of the many thousands of tracks I have stream effortlessly through the shed system:

For the technically minded, this is a very highly modified Quad 303 amp being fed by an early Cambridge pre-amp (because I can turn the volume down by remote) in turn being fed from a Beresford Caiman DAC. As soon as Les and I figure out what is wrong with one of my Quad 405 Monoblocks the 303 can go back to feeding the Electrostatics, the 405's will be going back in as they deliver effortless power.

Mr Johnston currently on the Live Wire album – Bliss!

graham.

(now going back to work and play catchup!)

[D.A.GodleyParticipant @d-a-godley]

Posted by Michael Gilligan on 21/04/2015 11:17:10:

What did I do today? … Finally gave up searching, and decided to ask for help:

A while ago, I posted a link to a very handy little on-line 'circular divisions' generator.

… I can't find it

Does anyone remember it, please.

MichaelG.

.

Note: it's not the 'Setting Circles' one [which is also excellent].

Edited By Michael Gilligan on 21/04/2015 11:18:40

Are you referring to http://www.cgtk.co.uk. ? .

[John Stevenson 1Participant @johnstevenson1]

Today ?

My favourite job, Bridgeport Varispeed motors. Seem to do loads of these over a year, never counted but three rolled in today all from one repairer.

The three on the left, good cross section of years and models. The two armatures need a 24 tooth internal respline but that's another day.

So quick splatter of weld.

Then a quick turn down and mill the keyways and jobs a good un.

.

[“Bill Hancox”Participant @billhancox]

Just read that a new Japanese train reached a speed of 603 KPH on a test run. **LINK**. At that speed there wouldn't be much left of a wandering cow on the line. Hope they are equipped with heavy duty wipers.

Bill

[Michael GilliganParticipant @michaelgilligan61133]

Posted by D.A.G. on 21/04/2015 22:18:15:

Posted by Michael Gilligan on 21/04/2015 11:17:10:

What did I do today? … Finally gave up searching, and decided to ask for help:

A while ago, I posted a link to a very handy little on-line 'circular divisions' generator.

… I can't find it

Does anyone remember it, please.

MichaelG.

.

Note: it's not the 'Setting Circles' one [which is also excellent].

Edited By Michael Gilligan on 21/04/2015 11:18:40

Are you referring to http://www.cgtk.co.uk. ? .

.

Brilliant … Thank You !

My wife will much happier now I'm not mithering about it.

MichaelG.

[Neil WyattModerator @neilwyatt]

"John was struggling to get the best finish with his new tooling…"

[JasonBModerator @jasonb]

Posted by Neil Wyatt on 22/04/2015 08:32:05:

"John was struggling to get the best finish with his new tooling…"

 

The problem turned out to be the 20mm sq carbide tipped tool was sitting a bit above ctr height and the 3mm depth of cut was a bit more than his Super Adept could cope with

 

I also want to know how he managed to make four out of the original three that he started with?

Edited By JasonB on 22/04/2015 08:52:26

[John Stevenson 1Participant @johnstevenson1]

Posted by JasonB on 22/04/2015 08:51:26:

I also want to know how he managed to make four out of the original three that he started with?

Edited By JasonB on 22/04/2015 08:52:26

That 4th one was in the first picture, far right, but unmentioned as it was only a seal track where a pump seal runs, two diameters up from the thread. Simple job, just turn down undersize and press a stainless steel sleeve on. The original is just mild steel so they do corrode.

The more expensive pumps have stainless stub shafts as standard.

Didn't think this one was worth a mention

[Howard LewisParticipant @howardlewis46836]

Have just finished the major work on my Super Adept.

The lathe itself was cleaned and repainted, years ago, but have only now, got round to the motor and wiring.

Made new Aluminium multigroove pulleys, for O ring drive belt, to replace the single coarse groove ones, and sorted out the wiring, (dodgy once the insulation tape was removed!) and put onto a new baseboard, with a new steel Chiptray/Splashback.

At first trial, it was not happy with cuts of about 5 thou on brass, so a lot of work to do on tools and adjustments before 3mm cuts!

Have wiped off the brass swarf, so that it is ready for the Peterborough Society stand at this weekends Hobbies and Model Engineering Show at Spalding. Off to unearth and clean the other items for display, ready to load the car, so as to able to set up on Friday. Monday's job will be to put it all away again!

Howard

[Howard LewisParticipant @howardlewis46836]

By the looks of John's pictures, he has taught the rotors to play Musical Chairs, whilst awaiting final machining!

Sounds like another satisfied customer for Speedy Sleeves!

PS Jason,

How do you get a 20mm sq toolholder onto an Adept? Surely, that would set it above centre height ?

What I do need is an extractor to get tongues out of cheeks!

Howard

[davebParticipant @daveb17630]

Posted by Howard Lewis on 22/04/2015 10:38:52:

How do you get a 20mm sq toolholder onto an Adept? Surely, that would set it above centre height ?

Silly……why do you think they have a gap bed?

[john carruthersParticipant @johncarruthers46255]

After seeing a good idea on here I've been tinkering around making an 8mm expanding mandrel to hold timing pulleys. Much quicker and more accurate than chucking them every time.
Just tighten or release the cone shaped Allen bolt in a conical (centre drill) hole.
I often have to turn the pulley boss down so can't use that to chuck them.
I shall gradually make a set of the common sizes, 10mm and 12mm, or maybe just make sleeves?

htt

Edited By john carruthers on 22/04/2015 16:18:06

[john carruthersParticipant @johncarruthers46255]

Always expect the unexpected…..

You never know what will come through the door next.

Today it's a microscope from Alexander Fleming's lab at Walmer, 3 leaves stripped from the focus pinion.
I patched it up temporarily with silver solder filed to the profile so they can use it.
I shall make a new shaft and 12 leaf pinion for it eventually once I rig a dividing index and grind a tool to the correct profile.

[Neil WyattModerator @neilwyatt]

What a nice job to get!

Neil

[Jesse Hancock 1Participant @jessehancock1]

John when you are finished perhaps you could introduce your customer to ye olde oil can and it's attributes.

[Jesse Hancock 1Participant @jessehancock1]

Went grocery shopping and also bought a dust pan and brush the last one was Gorillard by a neighbour. (A bit like the micro scope!) The mind boggles or at least mine does.

[Bob RodgersonParticipant @bobrodgerson97362]

Today I fitted a new contractor and transformer to my Tormach Mill. I didn't hold out much hope that this would cure the problem I had with it and sure enough it didn't. However with a great deal of assistance from one of the members of my local Model Engineering Society (Thanks Colin) and a lot of help from Tormach we managed to isolate a stray 50 volts that was causing a contractor to buzz to a fault in the control board and fix a problem with the auto oiler.

A new board will be on its way tomorrow and I might get it by mid week next week and I will get to cut first metal.

[john carruthersParticipant @johncarruthers46255]

All done, I took a leaf (?) from Mr. Stevenson's book and put a tiny spot of weld on, then roughly filed the teeth, then put it on the lathe to turn the max diameter. Then I set up a 24 tooth wheel as an index to profile the teeth. Works fine and I can't feel when the new teeth make contact with the rack

[Bob Brown 1Participant @bobbrown1]

Turned some 1/8" grooves in 1 9/16" phosphor bronze bar proved tough stuff or at least made the lathe cough.

Bob

[Neil WyattModerator @neilwyatt]

Pictures getting better – a lot on still, but hopefully I can soon get back in the workshop and make a tracking motor for even better results.

[Clive HartlandParticipant @clivehartland94829]

I was able this afternoon to spray the sound moderator with heat resisting paint. I prepared the items first with an etch in caustic solution and the dried them without touching with a gas flame. Then i sprayed them and let them dry and then sneaked into the kitchen, set the oven to 250 C and put the items in for 1 hour.

They came out with a matt black finish and hopefully it will endure much use. Luckily I got away with it without the wife noticing anything at all.

Edited By Clive Hartland on 24/04/2015 21:12:09

[John HaineParticipant @johnhaine32865]

Last weekend got my digital dividing head working.

This is a Myford dividing head equipper with a stepper motor driving through a 2:1 timing belt reduction, mounted on the VMB table.

Built Steve Ward's controller kit with display borad from eBay and a Routeout CNC stepper controller that's been in a draw for years. Once the components were on the PCB and everything assembled, applied power and it sprang to life. Needed a slight tweaking on the config to drive the stepper. Still need to do the button overlay to label them and an escutcheon round the keypad.

This is inside the Eddystone box that houses everything. You cant see the display board because it's sandwiched underneath the controller at top left. I used my little CNC mill to make the cutouts in the lid for the buttons, the keypad fitted perfectly first time.

Cloase-up of the worm. I knocked out the taper pin holding it to the original shaft (which incidentally pushed it slightly out of true), put the worm in a collet and enlarged the bore to 10mm, fitted a new shaft with Loctite(10mm to fit worm, turned down to 8mm for bearings), bored out the bracket for needle roller bearings (8mm bore x 12mm OD), refitted worm with ball thrust races top and botton. There's an ali block bolted to the top of the bracket and the motor plate (1/4 aluminium) is bolted to that through short slots to allow some adjustment of belt tension. The bottom bearing of the bracket was removed to allow machining, but there is space to fit one back but no apparent need as with rolling bearings there's no play in the shaft when the bearings are preloaded.

Unit is powered with 20 volts from my bench PSU and takes about 4.5 amps when running. Steve's controller is an excellent item, highly recommended.

One more project (nearly) off the list! I may also add a motor to a little "Sharp" rotary table at some stage.

Edited By John Haine on 25/04/2015 07:33:13

[Gray62Participant @gray62]

John,

Where did you get the ribbon cable from to connect the keypad to the controller board. I used individual wires as that's all I had at the time but for the next 2 I'm building , that would be a lot neater.

Graeme

[Dave DanielsParticipant @davedaniels93256]

You can get rainbow or grey flat cable from most suppliers ie. Rapid, CPC. Farnell, RS etc.

but mostly on reels ….

ESR appear do grey cable by the foot it seems ???

**LINK**

Bearing in mind, you may need an IDC crimp tool for some connectors.

D.

 

Edited By Dave Daniels on 25/04/2015 08:25:55

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