Something chesters1 might find of interest.

[chesters1]

Chesters1,

 

Even the "nails" have a history. Hand forged examples are very collectible. I had a pal (rip) that collected the history of glass panes in the westward movement. It's a wonderful story that few know.

 

Phone

Ah historians we call them anoracks lol remember anything pre industrial revolution is 'hand ' forged and after aswell ,most villages had blacksmiths as most people lived in the country

One pleasent chap has becaome the authority on bale seals ,most from russia and back a fair way as well

Another enthusiastic detectorist but older haha!

https://m.youtube.com/watch?v=JfkpBXi0TTw

Edited November 1, 2018 by chesters1

[Huge_Vitae]

Hand forged nails collectible! Do they sell for much cash? My house is held together with them, I could just whip them out and buy a few cartridges of ‘no more nails’

 

Afterwards I could change the name of the house to no more nails.

[chesters1]

Hand forged nails collectible! Do they sell for much cash? My house is held together with them, I could just whip them out and buy a few cartridges of no more nails

 

Afterwards I could change the name of the house to no more nails.

Anything will attract collectors the more there are the more cash involved lol

I heard some even collects intrepids

 

My dad didn't have any thumb nails , he was at the top of a ladder boarding a ship in the suez crises and someone hit them with a plank and they said f this I'm off

 

OOH perhaps it was 'that' plank you spoke off? It's near baby Jesus land!

Edited November 1, 2018 by chesters1

[Martin56]

There's more memory than this in a £1 watch from a market stall these days.

[corydoras]

There's more memory than this in a £1 watch from a market stall these days.

There would be because that is not any kind of memory. It's a logic board. What makes it interesting is; multilayer ceramic packages, surface mount technology., high density, twelve layer mother board, conformal coating, separation of high and low frequency components and all of this in 1967.

 

The motherboard in the device you used to reply to this post probably had a four or six layer motherboard.

Edited November 2, 2018 by corydoras

[chesters1]

All the layers do is have tracks saving having hundreds of wires all over the place, not really high tech just tidy, once we get nano-sized components the layers could have components on and then things would improve.

We once had a design come down from Cambridge their techs couldn't layout .

Board size was critical and it had to be the old-fashioned fr4 single layer .we got round it by extremely carefully removing half the thickness and tunnelling under the tracks ,we then placed half thickness board with the impossible tracks underneath and gluing the first tracks to it.

In essence a single thickness double layer board and all done with bubble etching and a mini flexible drill ,took weeks and must have cost a fortune and a great deal of swearing and chucking ruined boards about!

Easy today of course

 

They only do fr4 single or double-sided now for the students, all the hard to do one off stuff stopped when i did and is made offsite

Edited November 2, 2018 by chesters1

[corydoras]

All the layers do is have tracks saving having hundreds of wires all over the place, not really high tech just tidy, once we get nano-sized components the layers could have components on and then things would improve.

We once had a design come down from Cambridge their techs couldn't layout .

Board size was critical and it had to be the old-fashioned fr4 single layer .we got round it by extremely carefully removing half the thickness and tunnelling under the tracks ,we then placed half thickness board with the impossible tracks underneath and gluing the first tracks to it.

In essence a single thickness double layer board and all done with bubble etching and a mini flexible drill ,took weeks and must have cost a fortune and a great deal of swearing and chucking ruined boards about!

Easy today of course

 

They only do fr4 single or double-sided now for the students, all the hard to do one off stuff stopped when i did and is made offsite

I understand what the layers are for. Next, you'll be saying that a dozen layers was common place in 1967.

[chesters1]

I understand what the layers are for. Next, you'll be saying that a dozen layers was common place in 1967.

Why would i say that?,possibly 199 who would know ?

1960 Multilayer (4+ layer count) PCBs begin production.

https://www.pcb-solutions.com/pcb-market-monitor/the-history-of-pcb-infographic/

Edited November 2, 2018 by chesters1

[Phone]

Chesters1,

 

Wasn't it Bell Labs (somewhere in NJ) that tried layering back before WWII and burned down the building they were housed in? I don't know computers but somehow I remember this "history" if it was the same stuff they were trying to "stack". No, I'm not going to google. I don't care.

 

Phone

[chesters1]

Chesters1,

 

Wasn't it Bell Labs (somewhere in NJ) that tried layering back before WWII and burned down the building they were housed in? I don't know computers but somehow I remember this "history" if it was the same stuff they were trying to "stack". No, I'm not going to google. I don't care.

 

Phone

Nor me ,you dont have to know the history of a car nor whats under the body to drive.

I was given tasks no-one else could do in the uni and did them ,whether i did the 'correctly ' is unknown being a lifetime bodger helps .Given the old fashioned equipment in use didnt help!

The hardest one was trying to etch a board with an aluminium fuol length heatsink ,that almost ended in tears but mr bodger did it!