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Old 05-19-2014, 07:07 AM
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Progress Reports on the ETF Rebuilding Project

I plan to post periodic reports on our progress here.

First, I'd like to say that we view this as a long term effort - probably years before we can produce rebuilt tubes in any quantity. And, of course, we may never get there.

Our goal is to have a non-profit, self supporting operation that rebuilds tubes for collectors.

We have been making slow but steady progress toward this goal. First, we got the equipment from Hawkeye when they shut down and transported it to Hilliard. This gave us most of what we need to rebuild tubes.

This year we built the room where the equipment will he housed. Volunteers at our convention completed the drywall finishing, and the equipment will be moved in soon.

Recently we raised $8,500 to purchase and ship to Ohio phosphoring and aluminizing equipment from RACS. It should arrive this summer.

We have been accumulating stock of guns, glass, etc. as we find it. I think there is a considerable amount of this stuff out there that we will eventually get.

Our hope is that this year people will use the facility to experiment with rebuilding.

We also hope that by next year we will have a funtioning, active committee in place to oversee the operation. This group would work on the problems:

1. A business plan. Which tubes can we rebuild at a price that collectors can afford? How do we manage the facility?

2. How do we deal with the long term problem of guns? We will have a sufficient stock to do some tubes (who know how many, but maybe 100 late 40s black and white tubes and 50 color roundies), but we will need to find guns, stems, glass tubing, getters, etc. for an ongoing operation.
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Old 05-19-2014, 02:00 PM
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Very cool, thanks for the update !
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Old 05-25-2014, 04:38 PM
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Stems and guns: I found this on E3ay this afternoon. The vendor states they have many in stock. Looks like a color gun.

http://www.ebay.com/itm/Steam-Punk-A...item51ba004a98
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Old 05-25-2014, 06:49 PM
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Can an inline color gun like that even be a good parts donor for the monochrome and delta-gun color types that are worth the effort to rebuild?
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Old 05-25-2014, 07:45 PM
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At one time, the discussion turned to trying to broaden the types of tubes that could be rebuilt. If they posted an inline gun, and they stated that they have others, there could be delta and monochrome guns in the stash as well.

A tube like M48AAW00X is an example that is popular and priced high enough to warrant a rebuild attempt for those who need them.
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Old 07-12-2014, 06:41 AM
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Progress Report, July 12, 2014:

Walls and ceiling of the CRT rebuilding room have been painted. Next is the floor. We will schedule a day sometime this summer for volunteers to install the equipment and finish the construction.

We are still waiting for details of a quote that RACS received for shipment of their stuff to Ohio. We expect that shipment will happen this summer.
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Old 08-26-2014, 03:46 PM
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I can't wait until this happens.. I'm going to put a tube aside to wait and have rebuilt..
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Old 09-08-2014, 07:07 AM
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Progress report - September 8, 2014

www.earlytelevision.org/crt_project.html
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Old 09-08-2014, 11:10 PM
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Steve-

I am very happy to hear of the progress at the ETF. If I was nearby, I would want to help with the museum/foundation's efforts. Thank you for the ongoing work and for posting the update.
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Old 09-30-2014, 09:07 PM
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Take a look at our project page. We have made a great deal of progress:

http://www.earlytelevision.org/crt_project.html
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Old 10-01-2014, 12:43 PM
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That is great.

Thank you for the update and the pictures.
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Old 10-01-2014, 01:00 PM
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super! Thanks for the updates.
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Old 10-02-2014, 10:53 AM
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Very good to see the Oven coming together. Has a decision been made as to a make/model of thermostat and if it will just have one temperature probe or multiple?

Is the sheet metal uncoated or is there a coating on it that might out gas when heat is applied?

Matt
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Old 10-02-2014, 12:11 PM
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This is the controller we are going to use:

http://www.amazon.com/JLD634-Setpoin...oak+controller

There will be a single temperature probe. I think the convection fan will keep the temperature uniform.

The sheet metal is galvanized. I'm sure there will be plenty of nasty fumes when I first fire it up - oil, etc. and probably something from the insulation. Over a few hours it will probably all be burned off. During the tube baking it doesn't matter because the inside of the tube is sealed via the O ring on the diffusion pump.
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Old 10-02-2014, 12:18 PM
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Quote:
Originally Posted by Steve McVoy View Post
This is the controller we are going to use:

http://www.amazon.com/JLD634-Setpoin...oak+controller

There will be a single temperature probe. I think the convection fan will keep the temperature uniform.

The sheet metal is galvanized. I'm sure there will be plenty of nasty fumes when I first fire it up - oil, etc. and probably something from the insulation. Over a few hours it will probably all be burned off. During the tube baking it doesn't matter because the inside of the tube is sealed via the O ring on the diffusion pump.
How hot is the target temperature in the chamber during bake-out?
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