IBM 5251 restoration (break-down phase)

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snacksthecat
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IBM 5251 restoration (break-down phase)

Unread post by snacksthecat » 23 Nov 2018, 05:07

Subcat sold me this really awesome beamspring that should make a great project. I had a blast going through all the different parts and learning bits and pieces about what makes this keyboard chooch.

Here are some photos of the unboxing:

The parts came in two separate shipments. Here is the first one.
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Parts and pieces of switches
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One single beamspring switch
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Two little white boxes
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Little white box #1
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These things are beafy
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Little white box #2
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Electrical components
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The other shipment
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Case
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Backplate and PCB
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Switch plate
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Keyboard skeleton (spooky)
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I have a whole lot of different stuff going on at the moment so not sure how quickly I'll be able to move on this. Seems like it's going to be a good time though!
Last edited by snacksthecat on 12 Dec 2018, 05:30, edited 1 time in total.

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kakan

Unread post by kakan » 23 Nov 2018, 06:34

I will definitely follow this! Was the keyboard in working condition before the teardown?

xueyao

Re: IBM 5251 restoration (unboxing phase)

Unread post by xueyao » 23 Nov 2018, 07:07

Is there more than 1 solenoid? The picture seems to indicate 2 or 3 solenoid shipped o.o

Sent from my SM-G965F using Tapatalk

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lucar

Unread post by lucar » 23 Nov 2018, 20:26

You are going strong man! :)

Luca

John Doe

Unread post by John Doe » 27 Nov 2018, 09:39

Why shipped in different parts?

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snacksthecat
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Unread post by snacksthecat » 12 Dec 2018, 05:29

Got all the switches disassembled and ready for cleaning.

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A lot of the metal bits were badly rusted/corroded and very difficult to pull apart. I found that it is much easier if you have two people; one to clamp onto the metal stem with a pliers and another to pull on the switch bottom. I wrap the switch bottom in a tshirt so that it doesn't hurt my hands.

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Khers

Unread post by Khers » 12 Dec 2018, 08:44

I have a similarly far gone 5251 that's been sitting in pieces for a couple of years by now while I've been trying to figure out what to do with it. Following this with much interest!

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snacksthecat
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Unread post by snacksthecat » 16 Dec 2018, 00:19

Here's the whole thing broken down.

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snacksthecat
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Unread post by snacksthecat » 16 Dec 2018, 05:14

The switches have these little rubber o-rings that I would like to replace since some of them ripped and I lost a few.

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I did my best to measure them and ended up buying a pack of these:
https://www.mcmaster.com/catalog/124/3606

We'll see if it works out when they arrive.

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snacksthecat
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Unread post by snacksthecat » 17 Dec 2018, 04:34

Many of the switch stems were badly rusted/corroded. I've used this evapo-rust stuff in the past with good results. I think it did a nice job of getting off the junk.

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ZedTheMan

Unread post by ZedTheMan » 17 Dec 2018, 08:38

Yeah, that before and after really shows how much rust was removed!

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snacksthecat
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Unread post by snacksthecat » 21 Dec 2018, 23:12

The switches have been cleaned and reassembled.

The o-rings that I bought were a perfect match so that's awesome. I usually have bad luck ordering stuff based on measurements.

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snacksthecat
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Unread post by snacksthecat » 23 Dec 2018, 05:55

This may be the most suspenseful video you watch today

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snacksthecat
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Unread post by snacksthecat » 24 Dec 2018, 19:58

I originally just wanted to remove the rust and corrosion from. the plate but the rust remover actually also removed the thin layer of plastic and plating (?) that was on the plate as well. No doubt these layers were intended to protect the metal from rust. Is my best bet to paint it or is there another route that I can take to protect it?

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PlacaFromHell

Unread post by PlacaFromHell » 24 Dec 2018, 20:10

If you want to stay faithful to the original, you may get a zinc plating treatment and some clear lacquer just to be sure. Also just the lacquer would look good and work. Anyway, painting it isn't a bad option.

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snacksthecat
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Unread post by snacksthecat » 26 Dec 2018, 16:40

PlacaFromHell wrote: If you want to stay faithful to the original, you may get a zinc plating treatment and some clear lacquer just to be sure. Also just the lacquer would look good and work. Anyway, painting it isn't a bad option.
Just looked into zinc plating. I never knew that was something that could be done by an amateur. I'm sure there are shops that would do it as well, but it seems like it would actually be a fun DIY project.

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matt3o
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Unread post by matt3o » 26 Dec 2018, 16:57

why not just use some clear varnish for protection?

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snacksthecat
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Unread post by snacksthecat » 26 Dec 2018, 17:12

matt3o wrote: why not just use some clear varnish for protection?
That'd certainly do the trick but the plate looks pretty gnarly in its current state (granted, it hasn't been fully stripped down quite yet). I'm trying to go full bore with the restoration. I even have some special plans for the case.

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matt3o
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Unread post by matt3o » 26 Dec 2018, 17:23

personally I prefer to go with the minimum amount of restoration required and painting the whole thing would feel like sacrilege, but yeah that looks pretty bad indeed...

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snacksthecat
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Unread post by snacksthecat » 26 Dec 2018, 17:27

:) I'm not going to paint the case for that exact reason. My plan is to put it in an XT case like ekeppel did (which should be totally reversible). I've always thought that mod looked so cool and unique.

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