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What Did You Do Today (2017)

Report what you have been upto here (engineering related)

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JA18/04/2017 23:24:47
715 forum posts
33 photos

I never chucked out my old vinyl LPs but I now have nothing to play them on. Not all were replaced by CDs and amongst them is some really amazing stuff (or absolute rubbish) from the late 60s and early 70s.

Obviously I will need a "good" turntable. I understand moving coil pick-ups are hard to come-by and a pre-amp may be required (I have not really looked into this recently). Do I want to, I ask myself?

JA

Raymond Sanderson 219/04/2017 01:09:10
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280 forum posts
93 photos

I also still have my small collection of Vinyl's mainly The Moody Blues and from there a variety through to classics.

I say small collection as a mate who is in the music industry (Mastering sound engineer) his Vault as its know houses the equivalent of a double garage.

I also no longer have something to play them on BUT as the stores here are now again selling turntables **LINK**

There is nothing like listening to a record in comparison to a CD so many remakes have been doctored an even added to making them very different.

As for audiophies it was one area I envied to venture into but never did not to say i didn't enjoy doing some repairs on old systems at times.

**LINK**

Raymond Sanderson 219/04/2017 01:10:55
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280 forum posts
93 photos

Just found this LOL **LINK**

Ed Duffner19/04/2017 01:42:04
624 forum posts
50 photos

Over the Easter weekend I managed to build a working Nikon F100 film camera fom two faulty bodies. This has prompted an idea for an engineering project to make an adaptor which might allow a digital camera (attached in tandem) to check autofocus accuracy by digitally imaging a matte screen mounted at the film plane. I'm thinking of something like a slide copier.

Ed.

Andrew Holdaway19/04/2017 09:16:36
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139 forum posts
14 photos

Windy, Re: your 'checking instrument'. I've seen something very similar to this in the dim and distant past used for checking car inlet and exhaust valves for straightness and wear on the shaft.

Andy

Andrew Johnston20/04/2017 14:22:03
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3142 forum posts
369 photos

Now that's what I call a mirror finish:

mirror finish.jpg

I haven't measured the Ra (don't want to scratch the surface) but a fingernail comparison with a Rubert scale suggests that the Ra is under 0.4µm. Thickness variation across the plate is less than 0.07mm.

Apart from deburring the edges the finish is straight off the vertical mill.

Andrew

SillyOldDuffer20/04/2017 17:52:18
1348 forum posts
292 photos

Mislaid two fishtail thread gauges, the plastic pipe from my aerosol can of cutting fluid, and one of the finished bolts I made.

To complete a perfect day, after breaking the tip off my last carbide threading insert, I found the Project Box I spent a tenner replacing last week.

Should have stayed in my armchair watching Teletubbies.

Dave

Muzzer20/04/2017 19:12:34
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1980 forum posts
343 photos
Posted by Andrew Johnston on 20/04/2017 14:22:03:

Now that's what I call a mirror finish:

What sort of copper - low oxygen, pure copper - or some sort of "machinable" alloy?

No fingerprints even!

Andrew Johnston20/04/2017 20:34:09
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3142 forum posts
369 photos
Posted by Muzzer on 20/04/2017 19:12:34:

What sort of copper - low oxygen, pure copper - or some sort of "machinable" alloy?

No fingerprints even!

It's pure copper, probably C106 deoxidised, but I had enough trouble finding any sort of thick (8mm) copper plate, so beggars can't be choosers.

No fingerprints - that's the power of acetone.

Andrew

Hopper20/04/2017 22:59:38
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1632 forum posts
Posted by SillyOldDuffer on 20/04/2017 17:52:18:

Mislaid two fishtail thread gauges, the plastic pipe from my aerosol can of cutting fluid, and one of the finished bolts I made.

To complete a perfect day, after breaking the tip off my last carbide threading insert, I found the Project Box I spent a tenner replacing last week.

Should have stayed in my armchair watching Teletubbies.

Dave

So it was a good day then .

Raymond Sanderson 220/04/2017 23:43:46
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280 forum posts
93 photos

A late visit to a wood forum last night and I spotted these books for sale they will be mine by next week. wink

img_7314.jpg

img_7313.jpg

Robbo20/04/2017 23:55:48
1157 forum posts
114 photos

Raymond

That "Shaping Machine" book by Ian Bradley has for some reason achieved cult status and sells for loads of dosh on Amazon etc.

I have 2 or 3 of the others as well in my library. Original editions.

Raymond Sanderson 220/04/2017 23:58:05
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280 forum posts
93 photos
Posted by Robbo on 20/04/2017 23:55:48:

Raymond

That "Shaping Machine" book by Ian Bradley has for some reason achieved cult status and sells for loads of dosh on Amazon etc.

I have 2 or 3 of the others as well in my library. Original editions.

Thanks Robbo I have not paid for the lot yet hope Troy doesn't see your post the $50 for the lot might just explode some what.

Ian S C21/04/2017 11:35:18
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6157 forum posts
205 photos

The "checking tool" might well have been used before using this, you might as well have a straight valve stem before you start refacing the valve.

Ian S Cdsc00711 (640x480).jpg

Bazyle21/04/2017 11:44:23
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3237 forum posts
152 photos

Raymond we expect to see a thread on you building a small lathe, using your own castings (though not essential in the Mason design) cutting the changewheels with your sharp tools etc, cheeky

Muzzer21/04/2017 15:07:32
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1980 forum posts
343 photos
Posted by Robbo on 20/04/2017 23:55:48:

Raymond

That "Shaping Machine" book by Ian Bradley has for some reason achieved cult status and sells for loads of dosh on Amazon etc.

I have 2 or 3 of the others as well in my library. Original editions.

Funny, sounds as if the book may be worth more than the typical machine....

daveb21/04/2017 17:36:12
471 forum posts
9 photos

The Myford book was advertised at £50+ when it was out of print, must've hurt if you paid this because they reprinted it.

Frances IoM21/04/2017 18:14:32
366 forum posts
19 photos
crazy prices on Amazon are SOP when the dealer doesn't hold a copy - if some punter is willing to pay these prices then somewhere in the dealer network the copy will 'magically' appear to give profit to both sellers.

Edited By Frances IoM on 21/04/2017 18:15:27

Muzzer21/04/2017 18:37:33
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1980 forum posts
343 photos

Not always. For instance, a copy of EC Snelling's Soft Ferrites still commands a healthy premium. They are an essential text for magnetics designers yet rare as hen's teeth.

I managed to get a pristine 2nd Edition copy for £50 - must sell it on some day. Having said that, you can buy a paperback reprint these days for a mere $150 but other magnetics designers might sneer at you then.....

Murray

Raymond Sanderson 221/04/2017 21:19:28
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280 forum posts
93 photos
Posted by Bazyle on 21/04/2017 11:44:23:

Raymond we expect to see a thread on you building a small lathe, using your own castings (though not essential in the Mason design) cutting the changewheels with your sharp tools etc, cheeky


That would be great to achieve maybe in 1/3 scale ?

Now I'll have to find a Shaper.


daveb [The Myford book was advertised at £50+ when it was out of print, must've hurt if you paid this because they reprinted it.]

Thats $50 for all 16 books.


Frances & Muzzer I know what you mean years ago LOML & I were after 2 books her's cost $29 tops. The One on Ornamental Turning I was chasing ranged from $18 to $90 in various conditions I didn't buy it still looking.

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