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Equipment Discussions >> Classic Telescopes

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turk123
Carpal Tunnel
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Reged: 07/09/10

Loc: N.E. Ohio
Re: Elli Buk Cave 10" Cassegrain [Re: turk123]
      #5847421 - 05/08/13 09:53 AM Attachment (38 downloads)

The final result. This did not take very long at all. One thing you need to remember is when finished, wash the parts with soap and water to remove all the paint remover or guess what, your paint won't stick. Did I say I liked this "Aircraft Remover"?

Edited by turk123 (05/08/13 09:54 AM)


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starman876
Postmaster
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Reged: 04/28/08

Loc: VA
Re: Elli Buk Cave 10" Cassegrain [Re: turk123]
      #5847433 - 05/08/13 10:02 AM

What happens when you pour it over an aircraft? Does it vanish

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tim53
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Reged: 12/17/04

Loc: Highland Park, CA
Re: Elli Buk Cave 10" Cassegrain [Re: turk123]
      #5847445 - 05/08/13 10:07 AM

Quote:

The rings got a coat of the famous "aircraft remover".




There were airplanes in your Cave?


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turk123
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Reged: 07/09/10

Loc: N.E. Ohio
Re: Elli Buk Cave 10" Cassegrain [Re: starman876]
      #5847447 - 05/08/13 10:08 AM Attachment (28 downloads)

Quote:

What happens when you pour it over an aircraft? Does it vanish




Like I said before, that's why I am doing this inside. I don't want to bring down any planes.

Ready, set, FIRE!


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Dave M
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Reged: 08/03/04

Loc: Ohio
Re: Elli Buk Cave 10" Cassegrain [Re: tim53]
      #5847452 - 05/08/13 10:09 AM

I need some of that aircraft remover while imaging

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turk123
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Reged: 07/09/10

Loc: N.E. Ohio
Re: Elli Buk Cave 10" Cassegrain [Re: Dave M]
      #5847482 - 05/08/13 10:25 AM

OK I need some advise. Should I be using a primer on the parts first? If so, what kind, brand, color? The two backs are just getting a flat black finish. The finder rings will get the industrial grey (or what ever color I pick).

Would the crinkle black be appropriate for the two backs?


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tim53
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Reged: 12/17/04

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Re: Elli Buk Cave 10" Cassegrain [Re: turk123]
      #5847492 - 05/08/13 10:31 AM

I used a self-etching primer. Works great! Without primer, the paint will... ...well, it'll do what they all do on these old scopes, because nobody seemed to use primer on aluminum in those days!

Wrinkle black is very pretty when done right. And it's not hard to do right - just follow the instructions to a Tee. If you have an electric oven and enough SPUs to use it, set it at about 150F for a couple hours and it'll cure up nice and hard. Otherwise, give it a few days to dry.

I like the Instrument grey that Cave used in the 60s. They seem to have switched from that to the metallic grays and wrinkle black about the time your scope was built. I don't remember seeing an instrument grey scope with wrinkle black accents, but don't know if I've seen enough to say they never did that.

Of course, you can do what you want. I've always liked the color version of the catalog pic you show above, but think it would be even nicer looking if the tube were white.

-Tim.


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turk123
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Reged: 07/09/10

Loc: N.E. Ohio
Re: Elli Buk Cave 10" Cassegrain [Re: tim53]
      #5847793 - 05/08/13 01:43 PM Attachment (27 downloads)

With the recommendation of Tim, I bought Duplo-color self etching primer. It's reviews won out over the rustoleum version. I also bought a spray on metal cleaner just to get any oils or oxidation of the surfaces. I believe it has the etching component in it also.

I used a brass wire wheel on a grinder to spot polish the components as some of the castings are quite rough. You can see spots that Cave's crew ground down to "shape" the part, but my no means did they spend much time. I used the brass wheel to smooth out some of the rougher areas.

The instructions call for 3 thin coats of primer, which I did. (For those of you worried about the ring bottom in the picture, it got one last shot.) 2 minutes between coats (the paint is dry to the touch by then) and let dry for 30 minutes or longer. Here are the primed parts.


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turk123
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Reged: 07/09/10

Loc: N.E. Ohio
Re: Elli Buk Cave 10" Cassegrain [Re: tim53]
      #5847806 - 05/08/13 01:47 PM

Quote:

If you have an electric oven and enough SPUs to use it, set it at about 150F for a couple hours and it'll cure up nice and hard. Otherwise, give it a few days to dry.





Acronym Definition
SPU Strategy and Policy Unit
SPU Synergistic Processor Unit
SPU Short Procedure Unit (various hospitals)
SPU Society for Pediatric Urology
SPU Sub-Picture Unit
SPU Secure Processing Unit
SPU Strategic Procurement Unit
SPU Service de Pédagogie Universitaire (French: Department of University Education; University of Namur; Belgium)
SPU Socket Power Unit
SPU Subsystem Power Unit
SPU SAP Processing Unit
SPU Sociedad Peruana de Urología
SPU S-Band Polar Ultra
SPU Special Planning Unit
SPU Simulator Processor Unit
SPU Service Publication Unit
SPU Stage Pré-Universitaire (French: Pre-University Course)
SPU Shard Productions Underground (online video group)
SPU Supra-Phrasal Unit (linguistics)
SPU Solar Panel Unit
SPU Single Package Unit
SPU Sheep Production Unit
SPU Socialist Party of Ukraine
SPU Sound Pick-Up
SPU Special Purpose Unit
SPU Southern Polytechnic University
SPU Special Police Unit
SPU Segmented Polyurethane
SPU Sardar Patel University (Vallabh Vidyanagar, Gujarat, India)
SPU Seattle Pacific University
SPU Signal Processing Unit
SPU Southern Polytechnic University (Georgia)
SPU Seattle Public Utilities
SPU State Power Utility (India)
SPU Sound Processing Unit
SPU Somos un Pueblo Unido (Spanish: We Are a United Town; New Mexico)
SPU Split, Croatia (Airport Code)
SPU System Processing Unit
SPU Sripatum University (Thailand)
SPU Solids Processing Unit


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turk123
Carpal Tunnel
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Reged: 07/09/10

Loc: N.E. Ohio
Re: Elli Buk Cave 10" Cassegrain [Re: turk123]
      #5847810 - 05/08/13 01:49 PM Attachment (24 downloads)

Here is the ring just before priming. It shows the smoothing I did to the metal.

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tim53
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Reged: 12/17/04

Loc: Highland Park, CA
Re: Elli Buk Cave 10" Cassegrain [Re: turk123]
      #5847838 - 05/08/13 02:01 PM

Quote:

Quote:

If you have an electric oven and enough SPUs to use it, set it at about 150F for a couple hours and it'll cure up nice and hard. Otherwise, give it a few days to dry.





Acronym Definition
SPU Strategy and Policy Unit
SPU Synergistic Processor Unit
SPU Short Procedure Unit (various hospitals)
SPU Society for Pediatric Urology
SPU Sub-Picture Unit
SPU Secure Processing Unit
SPU Strategic Procurement Unit
SPU Service de Pédagogie Universitaire (French: Department of University Education; University of Namur; Belgium)
SPU Socket Power Unit
SPU Subsystem Power Unit
SPU SAP Processing Unit
SPU Sociedad Peruana de Urología
SPU S-Band Polar Ultra
SPU Special Planning Unit
SPU Simulator Processor Unit
SPU Service Publication Unit
SPU Stage Pré-Universitaire (French: Pre-University Course)
SPU Shard Productions Underground (online video group)
SPU Supra-Phrasal Unit (linguistics)
SPU Solar Panel Unit
SPU Single Package Unit
SPU Sheep Production Unit
SPU Socialist Party of Ukraine
SPU Sound Pick-Up
SPU Special Purpose Unit
SPU Southern Polytechnic University
SPU Special Police Unit
SPU Segmented Polyurethane
SPU Sardar Patel University (Vallabh Vidyanagar, Gujarat, India)
SPU Seattle Pacific University
SPU Signal Processing Unit
SPU Southern Polytechnic University (Georgia)
SPU Seattle Public Utilities
SPU State Power Utility (India)
SPU Sound Processing Unit
SPU Somos un Pueblo Unido (Spanish: We Are a United Town; New Mexico)
SPU Split, Croatia (Airport Code)
SPU System Processing Unit
SPU Sripatum University (Thailand)
SPU Solids Processing Unit




It's not on the list!

Spousal Permission Unit!


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starman876
Postmaster
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Reged: 04/28/08

Loc: VA
Re: Elli Buk Cave 10" Cassegrain [Re: tim53]
      #5847912 - 05/08/13 02:37 PM

I wish I was retired or had the day off to play like you are Turk.

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turk123
Carpal Tunnel
*****

Reged: 07/09/10

Loc: N.E. Ohio
Re: Elli Buk Cave 10" Cassegrain [Re: starman876]
      #5848250 - 05/08/13 05:20 PM

Quote:

I wish I was retired or had the day off to play like you are Turk.




Well, I'm not retired, but I own my own business that I am able to get away from when I need to. Also, a lot of my work is done on the computer from anywhere. I tend to have a phone stuck in my ear most of the day.


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turk123
Carpal Tunnel
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Reged: 07/09/10

Loc: N.E. Ohio
Re: Elli Buk Cave 10" Cassegrain [Re: turk123]
      #5848473 - 05/08/13 06:55 PM Attachment (27 downloads)

The mirror holder parts got three coats of flat black and they look good. Put them away for a few days and let them cure. The misses would shoot me if I baked them in her oven.

Edited by turk123 (05/08/13 09:54 PM)


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turk123
Carpal Tunnel
*****

Reged: 07/09/10

Loc: N.E. Ohio
Re: Elli Buk Cave 10" Cassegrain [Re: turk123]
      #5848671 - 05/08/13 08:42 PM Attachment (22 downloads)

Lots of small parts to be polished. I did 6 finder thumbscrews (not shown) and this assortment of parts. At first I thought I would replace all the hardware with new if I could get equivalent items. After thinking about it, I kind of realized I would be throwing away the original parts for new. The brass washers shown here were pretty well black in appearance and although they did not clean up perfectly, I kind of think they ought to stay. They have a right to stay, they are original. Am I getting too sentimental?

On another note, the spacers shown in the top of the picture interested me. When they were filthy, they looked like brass. Now that they are cleaned up, the have taken on a rose color. What metal it that?


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mgwhittle
Pooh-Bah
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Reged: 08/24/11

Loc: Chattanooga, TN
Re: Elli Buk Cave 10" Cassegrain [Re: turk123]
      #5848682 - 05/08/13 08:44 PM

Looks like bronze to me.

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Kevin Brose
member


Reged: 07/03/07

Loc: Colorado
Re: Elli Buk Cave 10" Cassegrain [Re: mgwhittle]
      #5848701 - 05/08/13 08:53 PM

Yup, those are bronze.

I owned and used a 10" Cave D-K Cassegrain for 19 years, so if you have any questions feel free to ask.

- Kevin


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turk123
Carpal Tunnel
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Reged: 07/09/10

Loc: N.E. Ohio
Re: Elli Buk Cave 10" Cassegrain [Re: Kevin Brose]
      #5848723 - 05/08/13 09:05 PM

Keven, did you add a baffle inside? How were the views. Where you able to collimate it or mess with the optics? I'm not sure where to begin to get it back to focus when I put it back together. I've measered all the settings now, but who knows if they were all ready messed with and out of "round".

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Datapanic
Post Laureate
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Reged: 10/17/09

Loc: Tucson, Arizona
Re: Elli Buk Cave 10" Cassegrain [Re: turk123]
      #5848782 - 05/08/13 09:27 PM

Could be self-lubricating bronze.

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turk123
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Reged: 07/09/10

Loc: N.E. Ohio
Re: Elli Buk Cave 10" Cassegrain [Re: Datapanic]
      #5848859 - 05/08/13 10:00 PM

I have to choose a color now. Should I go with the original industrial grey or my second choice, pewter grey. The rods between the tube rings will get painted this color along with the two sets of finder rings. I am going to send the counter weights off to Paul's Chrome for chroming. I think that would be a nice match for the polished tube rings. Yes?

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